Quadtech Sentry 30 Plus, Sentry 20 Plus, Sentry 10 Plus User Manual

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Sentry Plus Series

Hipot Testers

Instruction Manual

Form 150697/A4

QuadTech, Inc., 2003

5 Clock Tower Place, 210 East

Maynard, Massachusetts, U.S.A. 01754

January 2005

Telephone: 978-461-2100 Sales: 800-253-1230 Facsimile: 978-461-4295

Website: www.quadtech.com

The material in this manual is for informational purposes only and is subject to change, without notice. QuadTech assumes no responsibility for any error or for consequential damages that may result from the misinterpretation of any procedures in this publication.

WARNING

Potentially dangerous voltages may be present on front and rear panel terminals. Follow all warnings in

this manual when operating or servicing this instrument. Dangerous levels of energy may be stored in

capacitive devices tested by this unit. Always make sure the high voltage indicator is not on when

connecting or disconnecting the device under test.

Product will be marked with this symbol (ISO#3864) when it is necessary for the user to refer to

the instruction manual in order to prevent injury or equipment damage.

Product marked with this symbol (IEC417) indicates presence of direct current.

Product will be marked with this symbol (ISO#3864) when voltages in excess of 1000V are

present.

Page 2 of 85

Contents

Warranty ............................................................................................................5

Specifications ............................................................................................................7

Accessories ............................................................................................................11

Safety Precautions....................................................................................................13

Condensed Operating Instructions ........................................................................15

Introduction - Section 1

1.1 Unpacking and Inspection..............................................................................21

1.2 Product Overview ..........................................................................................21

1.3 Controls and Indicators..................................................................................22

1.3.1 Front Panel Controls and Indicators .................................................22

1.3.2 Rear Panel Controls and Connectors ................................................23

1.4 Installation .....................................................................................................24

1.4.1 Dimensions ........................................................................................24

1.4.2 Instrument Positioning.......................................................................24

1.4.3 Power Requirements..........................................................................24

1.4.4 Safety Inspection................................................................................25

Operation - Section 2

2.1 Terms and Conventions.................................................................................27

2.2 Start-Up..........................................................................................................31

2.3 Programming Electrical Safety Tests.............................................................31

2.4 Programming a Ground Continuity Test .......................................................35

2.5 Programming an AC Hipot Test....................................................................37

2.6 Programming a DC Hipot Test......................................................................39

2.7 Programming an Insulation Resistance (IR) Test .........................................41

2.8 Programming a Pause (PA) in Test Sequence ..............................................43

2.9 Storing a Test Setup ......................................................................................45

2.10 Programming a Multi-Step Test.....................................................................47

2.11 PRESET Test Parameters .............................................................................48

2.11.1 AC-V FREQ ......................................................................................48

2.11.2 Software AGC ...................................................................................48

2.11.3 WV AUTO RANGE .........................................................................48

2.11.4 IR AUTO RANGE ............................................................................49

2.11.5 GFI ....................................................................................................49

2.11.6 FAIL RESTART ...............................................................................49

2.12 Instrument Offset ..........................................................................................50

2.13 Connection To Device Under Test ................................................................53

2.14 Measurement Procedure.................................................................................54

Page 3 of 85

Contents (Continued)

2.15 MENU Parameters ........................................................................................56

2.15.1 MEMORY Function .........................................................................57

2.15.2 SYSTEM Function ............................................................................59

2.15.2.1 CONTRAST ...................................................................59

2.15.2.2 BUZZER VOLUME .......................................................59

2.15.2.3 EN 50191 ........................................................................59

2.15.2.4 DC 50V AGC ..................................................................60

2.15.3 OPTION Function .............................................................................60

2.15.4 CALIBRATION Function ................................................................60

2.15.5 KEY LOCK Function .......................................................................61

2.15.6 CHANGE PASSWORD Function ....................................................63

2.15.7 ERROR LOG Function .....................................................................65

2.15.8 ABOUT Function ..............................................................................65

Interface - Section 3

3.1 Remote ..........................................................................................................67

3.2 G16 International Power Strip.......................................................................70

3.3 S07 Power Entry Adapter Cable ...................................................................71

3.4 S03 Corded Product Adapter ........................................................................72

3.5 S05 Foot Switch ............................................................................................73

3.6 S08 Gun Probe ..............................................................................................74

3.7 S50 Plus Ground Bond Tester .......................................................................75

Service & Calibration - Section 4

4.1 General...........................................................................................................77

4.2 Instrument Return ..........................................................................................77

4.3 Calibration......................................................................................................77

4.3.1 Calibration Parameters.......................................................................78

4.3.2 Enable Calibration ............................................................................79

4.3.3 AC Voltage Calibration .....................................................................80

4.3.4 DC Voltage Calibration .....................................................................80

4.3.5 IR Voltage Calibration.......................................................................81

4.3.6 AC Current Calibration......................................................................82

4.3.7 DC Current Calibration......................................................................83

4.3.8 ARC Calibration ................................................................................84

4.3.9 IR Resistor Calibration .....................................................................84

4.3.10 Ground Continuity Calibration .........................................................85

4.3.11 Contrast Calibration ..........................................................................85

4.3.12 Finalize Calibration ...........................................................................85

Page 4 of 85

Warranty

QuadTech warrants that Products are free from d efects in material and workmanship and, when properly used, will perform in accordance with QuadTech’s applicable published specifications. If within one (1) year after original shipment it is found not to meet this standard, it will be repaired, or at the option of QuadTech, replaced at no charge when returned to a QuadTech service facility.

Changes in the Product not approved by QuadTech shall void this warranty.

QuadTech shall not be liable for any indirect, special or consequential damages, even if notice has been given of the possibility of such damages.

This warranty is in lieu of all other warranties, expressed or implied, including, but not limited to any implied warranty or merchantability of fitness for a particular purpose.

SERVICE POLICY

QuadTech’s service policy is to maintain product repair capability for a period of at least five (5) years after original shipment and to make this capability available at the then prevailing schedule

of charges.

Page 5 of 85

Page 6 of 85

Specifications

Dielectric Strength

Sentry 10, 20, & 30 Plus AC Output Voltage: Range: 0.05 to 5kV AC, in 1V steps

Regulation: ± (1% of setting +5V) Frequency: 50/60Hz selectable

Voltage Display: Accuracy: ± (1% of reading +5V) Resolution: 1Volt AC Current Display: Range: 0.001mA to 20mA AC, in 1µA steps Accuracy: ± (1.5% of reading + 5 counts) (Total)

Sentry 20 & 30 Plus DC Output Voltage: Range: 0.05 to 6kV DC, in 1V steps

Voltage Display: Accuracy: ± (1% of reading +5V)

Resolution: 1Volt DC Current Display: Range: 0.0001mA to 5mA DC Resolution: 0.1µA Accuracy: ± (1.5% of reading + 5 counts)

Insulation Resistance

Sentry 30 Plus Insulation Resistance: Voltage: 50 - 1000V DC in 1V steps

Accuracy: ± (1% of reading + 5V) Range: 0.1MΩ - 50GΩ (voltage dependent)

Accuracy: 0.1MΩ - 1GΩ, ± (10% + 5counts) < 100V

0.1MΩ - 1GΩ, ± (7% + 5counts) < 500V 1MΩ - 1GΩ, ± (4% + 5counts) ≥ 500V 1GΩ - 10GΩ, ± (7% + 5counts) ≥ 500V 10GΩ - 50GΩ, ± (12% + 5counts) ≥ 500V

Page 7 of 85

Specifications (Continued)

Safety Features

Ground Continuity Test: Programmable: 0.1Ω to 5.0Ω ±0.2Ω Accuracy, or OFF

Ground Fault Interrupt (GFI): Shutdown of current imbalance when I > 0.5mA ±0.25mA, or OFF

In-Rush Current: DC Mode: Set detection limit: 0.5uA – 5mA in 0.0001mA increments

The programmable range for In-Rush current is dependent on the programmed High Limit: Range: High Limit: In-Rush: 1 0.1µA – 300µA 0.5µA – 300µA 2 0.301mA – 3.000mA 5µA – 3.000mA 3 3.01mA – 5.0mA 50µA – 5.0mA

Fast Output Cutoff: HV output voltage terminated <0.4mS after NG (Fail) result

Fast Discharge: <0.2s (Typical) Discharge of DUT upon termination of HV.

ARC Detection: Detection Current: Range: 1mA – 20mA AC and 5mA DC

Pulse Width: Minimum: 10µs

General Features Time: Test*: 0.1sec – 999 sec, Continuous

Ramp: 0.1sec – 999 sec, OFF Dwell: 0.1sec – 999 sec, OFF (DC & IR Mode only) Fall: 0.1sec – 999 sec, OFF

* Te st Time is limited ≤ 60seconds when the voltage and high c urrent limit > 100VA. * Test Time for IR is 0.3sec – 999sec, Continuous

Limits: HI/LO programmable during Test Time LO can be set to OFF during Hipot Test HI can be set to OFF during IR Test

Indication: Pass/fail LEDs, audible alarm

Remote Control: Inputs: START, STOP

Characteristics: 24V active low, Pulse width ≅20ms Outputs: PASS, FAIL, UNDER TEST Characteristics: Dry contact relay, Closed if true

115V, <100mA

Connector: 9 pin male D-series & Terminal Strip

Page 8 of 85

Specifications (Continued)

General Features Setup Storage: 60 Memory Locations, 10 steps each

Standard Interfaces: Remote I/O

Connectors: Front and Rear Connection

HV OUTPUT: Custom Banana Socket RTN/LOW: Banana Socket GC (Rear Only): Binding Post/ Banana Socket

Front Panel 10 Digit Password with or without setup recall Lockout: LED Display: LOCK

Mechanical: Bench Mount

Dimensions:(w x h x d): 10.50 x 4.50 x 14.25 inches

262.5 x 112.5 x 356.25 mm

Weight: 25.0 lbs (11.5 kg) net, 28 lbs (13.0 kg) shipping Environmental: Specifications: 18°C to 28°C, 70% RH

Operating: 0°C to + 40oC, 80% RH Storage: -10°C to + 60oC, 80% RH

Warm-up Time: 15 minutes

Power:

Supplied:

Safety Agency: CE, TUV

Ordering Description Catalog No. Information: AC Hipot Tester Sentry 10 Plus

AC/DC Hipot Tester Sentry 20 Plus AC/DC/IR Hipot Tester Sentry 30 Plus

•

90 - 130V AC

•

200 - 250V AC

•

Instruction Manual

•

Calibration Certificate

•

Ground Continuity Lead

•

50 or 60Hz

•

300W max

•

Power Cable

•

S02 Test Leads

Page 9 of 85

Page 10 of 85

Accessories

Accessories Included

Item Quantity QuadTech P/N

AC Power Cord 1 4200-0300 Power Line Fuse 3.15A 250V SB 1 520072 Power Line Fuse 1.6A 250V SB 1 520074 High Voltage Lead Set, 1m with alligator clips 1 S02 Ground Continuity Lead 1 700100 Instruction Manual 1 150697 Calibration Certificate 1 N/A

Accessories/Options Available

Item Quantity QuadTech P/N

High Voltage Lead Set, high & low, 1m (std. with unit) 1 S02 Corded Product Adaptor, 115V 1 S03 High Voltage Lead Set, high & low, 2m 1 S04 Foot Switch 1 S05 High Voltage Probe 1 S06 Power Entry Adaptor Cable 1 S07 Gun Probe 1 S08 High Voltage Lead, 1m, unterminated 1 S09 High Voltage Lead, 2m, unterminated 1 S10 Gun Probe with Remote Start 1 S11 Load Box, resistive 1 S12 Load Box, custom resistors 1 S14 Interconnection Cable to Sentry 50 Ground Bond Tester 1 S15 Ground Continuity Lead (standard with unit) 1 700100 International Power Strip 1 G16 Corded Product Adaptor, 240V 1 G25

Page 11 of 85

Page 12 of 85

Safety Precautions

WARNING

The Sentry Plus Series Hipot Tester can provide an output voltage as high as 6000V DC (5000V

AC) to the external device under test (DUT). Although the Sentry Plus unit is designed with full

attention to operator safety, serious hazards could occur if the instrument is used improperly and

these safety instructions are not followed.

1. The Sentry Plus unit is designed for operation with its chassis connected to earth ground. The instrument is shipped with a three-prong power cord to provide this connection to ground. This power cord should only be plugged in to a receptacle that provides earth ground. Serious injury can result if the Sentry Plus is not connected to earth ground.

2. Tightly connect cable(s) to the (blue) RTN/LOW terminal. If this is not done, the DUT’s casing can be charged to the high voltage t est level and serious injur y or electri cal shock hazards could result if the DUT is touched.

3. Never touch the metal of the High Volta ge probe directl y. Touch only the insulated parts of the lead(s).

4. Never touch the test leads, test fixture or DUT in any manner (this includes insulation on all wires and clips) when the high voltage is applied and the red DANGER light is ON.

5. Before turning on the Sentry Plus unit, make sure there is no device (DUT) or fixture connected to the test leads.

6. After each test, press the [STOP] (red) button for safety if there is an y concern that HV may still be applied to the output terminals.

7. When the red DANGER LED is lit or flashing, NEVER touch the device under test, the lead wires or the output terminals.

8. Before touching the test lead wires or output terminals make sure:

a) The red [STOP] button has been pressed b) The red DANGER LED is OFF.

9. In the case of an emergency, turn OFF the POWER switch using a “hot stick” and disconnect the AC power cord from the wall. DO NOT TOUCH THE Sentry Plus INSTRUMENT.

10. If the DANGER LED does not go off when the [STOP] button is pressed, immediately stop using the tester. It is possible that the output voltage is still being delivered regardless of the TEST ON/OFF control signal.

11. When the Sentry Plus instrument is used in remote control mode, be extremel y careful. The High Voltage Output is being turned on and off with an external signal.

Page 13 of 85

Page 14 of 85

Condensed Operating Instructions

WARNING

High Voltage is applied to the white HV Output Terminal anytime the red DANGER LED is ON

or flashing. Always make sure the DANGER LED i s OFF when connecting or disconnecting

the device under test (DUT).

General Information

The Sentry Plus Series Hipot Tester is a measuring instrument for direct readout of hipot output voltage and leakage current and insulation resistance. The voltage applied to the device under test is adjustable from 50V to 5kV AC and 50V to 6kV DC. The trip current limit is programmable from 1uA to 20mA AC in 1uA steps and from 0.1uA to 5mA DC in 0.1uA steps. The output voltage for Insulation Resistance tests is 50V to 1000V DC over a measurement range of 100kΩ to 50GΩ.

Start-Up

The Sentry Plus Series unit can be operated from a power source betw een 90 and 250VAC at a power line frequency of 50 or 60Hz. The standard Sentry Plus Series unit is shipped from QuadTech with a 3.15A fuse in place for AC 90 -130V operation. (A 1.6A fuse is included for 200-250V operation). The Sentry Plus unit is shipped with the line voltage selector set for 120V. Refer to paragraph 1.4.3 for instructions on changing the fuse or line voltage selector.

Connect the Sentry Plus Series unit AC power cord to the source of p roper voltage. Operate the Sentry Plus Series instrument with its chassis connected to earth ground. The Sentry Plus instrument is shipped with a three-prong power cord to provide this connection to ground. This power cord should only be plugged into a receptacle that provides earth ground. Serious injur y may result if the Sentry Plus Series instrument is not connected to earth ground.

Press the [POWER] button on the front panel to apply power. To switch the powe r off, press the [POWER] button again or if measurements are to be made proceed with the Test Parameter Setup in Table COI-1. The Sentry Plus Series instrument should warm up for 15 minutes prior to use.

NOTE

Please read this instruction manual in its entirety before operating this instrument.

These condensed operating instructions are not a substitute for all the information provided in the

remainder of this manual.

NOTE

Refer to paragraphs 2.3 through 2.9 for a full description of programming test parameters and

instruction on how to store the test setup. Test parameters must be set before the Sentry Plus

Series instrument can be zeroed.

Page 15 of 85

Condensed Operating Instructions (Continued )

There are numerous menus within the Sentry Plus Series instruments. Familiarize yourself with these menus prior to programming a test. Figure COI-1 illustrates the STAND BY display and lists the functions that can be accessed by pressing the [F1] through [F4] keys.

"STAND BY" or "Power-Up" Display

Function of F1 - F4 Keys

Instrument

Status

STEP 1/1

1.250kV

15.00mA

3.0s

RMT ERROFSTLOCKSTAND BY

PROGRAM MOREMENUPRESET

MORE..

Insert Delete

STEP: 1-10 MODE: AC/DC/IR/GC/PA Voltage High Limit Test Time Low Limit ARC Limit Ramp Time Dwell Time Fall Time In Rush Current

(DC, IR)

(DC)

AC-V Freq. Memory Soft AGC. WV Auto Range IR Auto Range GFI FAIL Restart

Figure COI-1: Sentry Plus Series Menus

LOWAC ARC RAMP FALL

: OFF : OFF : OFF : OFF

F3 F4F2F1

Recall Delete

System

Contrast Buzzer Volume EN 50191 DC 50V AGC

Option

Multi-Link

Calibration

(Need password to enter)

Key Lock

(Need password to enter)

Change Password

(Need password to enter)

Error Log About

Manufacturer

Software version

PROGRAM

PRESET

MORE..

View Test Steps (Tabular Format) OffsetStore

To enter programming mode.

To view/change preset (initial) settings.

To view/change: memory, system, option,

cal., key lock, pw, error & about. To view the programmed test setups and

access offset function.

Page 16 of 85

Condensed Operating Instructions (Continued )

With the Sentry Plus Series instrument in “STAND BY” (or power-up display) status, follow the steps in Table COI-1 to program an AC, DC, IR or GC test or insert a Pause in the test sequence.

"STAND BY"

DISPLAY

0.000kV

0.500mA

3.0s

LOWACSTEP 1/1 ARC RAMP FALL

RMT ERROFSTLOCKSTAND BY

OFF

PROGRAM PRESET MENU MORE..

To enter programming mode.

To view/change preset (initial)

test parameters. To view/change system parameters:

memory, system, option, calibration, key lock, password, error, & about. To view the programmed test setups and

access offset function.

PROGRAM MODE DISPLAYS

Display

VOLT HIGH TIME

VOLT LOW TIME

CURR HIGH DWELL

0.000kV

0.500mA

3.0s

0.000kV

0.500mA

3.0s

0.000kV

1.0M

::3.0s

: 0.0A :

1.0

3.0s

LOWACSTEP 1/1 ARC RAMP FALL

RMT ERROFSTLOCKSELECT MODE

LOWDCSTEP 1/1 ARC RAMP

FALL I-RUS

RMT ERROFSTLOCKSELECT MODE

HIGHIRSTEP 1/1 RAMP DWELL : OFF

Ω

FALL

RMT ERROFSTLOCKSELECT MODE

GCSTEP 1/1

Ω

LOW

OFF

UP DOWN NEXT EXIT

OFF

: :

OFFDWELL OFF

OFF

UP DOWN NEXT EXIT

OFF

UP DOWN NEXT EXIT

OFF

UP DOWN NEXT

To change value in highlighted box.

To toggle choices of highlighted box.

To move highlighted box around

display to select parameter to change To exit programming mode.

To select test mode: AC/DC/IR/GC/PA

Display

PAUSE UNDER TEST SIGNAL

PAUSE MODE

::OFF

RMT ERROFSTLOCKSELECT MODE

PASTEP 1/1

EXIT

UP DOWN NEXT

RMT ERROFSTLOCKSELECT MODE

EXIT

Figure COI-2: “STAND BY” and PROGRAM Displays

Page 17 of 85

Condensed Operating Instructions (Continued )

Table COI-1: Test Parameter Setup

Step Test Para meter AC Hipot DC Hipot IR GC Range

1 To enter

programming mode

2 Select Test Step [F1] = UP

3 Select Test Mode [F1] = UP

4 Set Test Voltage

Set Current (GC)

5 Set High Limit *

Set Low Limit (IR)

6 Set Test Time

Set Dwell (GC) ***

7 Set Low Limit **

Set High Limit (IR)

8 Set ARC Limit [F1] = INC.

9 Set Ramp Time [F1] = INC.

10 Set Dwell Time*** [F1] = INC.

11 Set Fall Time [F1] = INC.

12 Set In-Rush Current [F1] = INC.

13a To program next test

step OR

13b To exit

programming mode

* High limit decision is made throughout test time. ** Unit will make low limit decision at the end of test. * ** Limits will be checked at end of dwell time.

[F1] = PROGRAM

[F3] = NEXT

[F3] = NEXT [F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT

[F3] = NEXT

[F1] = NEW

[F4] = EXIT [F4] = EXIT [F4] = EXIT Exit programm i ng

[F1] = PROGRAM [F1] = UP [F3] = NEXT [F1] = UP [F3] = NEXT [F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT [F1] = INC. [F3] = NEXT

[F3] = NEXT [F1] = INC. [F3] = NEXT

[F3] = NEXT [F1] = NEW

[F1] = PROGRAM [F1] = UP [F3] = NEXT [F1] = UP [F3] = NEXT [F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT

1-20mA AC

[F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT [F1] = INC. [F3] = NEXT

0, 0.5uA-5mA DC

[F1] = NEW

[F1] = PROGRAM

[F1] = UP [F3] = NEXT [F1] = UP [F3] = NEXT [F1] = INC. [F3] = NEXT

[F1] = INC. [F3] = NEXT

0-999s AC

0-999s DC

0-999s AC

[F1] = NEW

1-10

AC, DC, IR, GC, PA

0.05-5kV AC

0.05-6kV DC

0.05-1kV IR

0.1A GC

0.001-20mA AC

0.0001-5mA DC

0.1-50000MΩ IR 0, 0.1-5Ω GC 0, 0.1-999s AC 0, 0.1-999s DC 0, 0.1-999s I R

0.1-1s GC 0-20mA AC 0-5mA DC 0-50GΩ IR 0-5Ω GC

1-5mA DC

0-999s DC 0-999s IR

0-999s IR

0-999s DC 0-999s IR

Program next step

Page 18 of 85

Condensed Operating Instructions (Continued )

Offset

After setting your test parameters, zero the Sentry Plus Series instrument by using the automatic offset. With no device connected, connect the appropriate cable (or other fixture) into the OUTPUT connectors. Refer to paragraph 2.13 cable connections based on test to be performed. Return and HV test leads should not be connected together (open circuit) for AC and DC hipot tests. Return and GC test leads should be connected (short circuit) for a GC test. There is no offset in an IR test.

NOTE:

If Ground Continuity (GC) is turned ON when performing an offset, the continuity lead must be connected to the

return (RTN/LOW) terminal, otherwise turn the continuity test OFF.

Prior to performing the OFFSET function:

• Allow the instrument to warm up for 15 minutes.

• Connect the Test cables (or fixture) to the front panel OUTPUT and RTN/LOW connectors.

• Program the test steps.

With the instrument in STAND BY status:

• Press [F4] = MORE

• Press [F3] = OFFSET

• Follow instructions on display: i.e.: connect OPEN across OUTPUT terminal.

• Press green [START] button.

• Wait while instrument gets OFFSET value.

• The OFST block at the bottom of the display is now highlighted (back lit).

• Press [F4] = MORE to return to STAND BY status.

STOP

START

When ready, press [START] to get offset values

uadTech

Figure COI-3: Zero/Offset OPEN Configuration

Sentry 30 Plus AC/DC/IR Hipot Tester

Please open the HV output terminal

No offset in IR mode.

PRESS START KEY TO G ET OFFSET..

CAL UPDATE

DANGERPASS FAIL

CAUTION

Max 5kVAC

6kVDC

RTN/LOW

OPEN

OUTPUT

Page 19 of 85

Condensed Operating Instructions (Continued )

Connection to Device under Test (DUT)

Figure COI-4 illustrates the connection of the Sentry Plus Series unit to a single DUT using the S02 1-meter HV cable set that comes standard with the instrument. The custom white banana plug/red alligator clip is connected between the OUTPUT terminal on the Sentry Plus Series unit and the high side of the device under test. The black banana plug/alligator clip is connected between the RTN/LOW terminal on the Sentry Plus Series unit to the low side of the DUT.

STOP

START

uadTech

1.250kV

0.500mA

3.0s

STAND BY OFST

Sentry 30 Plus AC/DC/IR Hipot Tester

STEP 1/5

CAL UPDATE

RMT LOCK ERR

LOW: OFF ARC: OFF RAMP: OFF

FALL: OFF

CAUTION

6kVDC

RTN/LOW

S02

Cable

Set

DUT

PROGRAM PRESET MENU

MORE..

DANGERPASS FAIL

Max 5kVAC

COI-4: Connection to Device under Test

Measurement Mode

1. Turn [POWER] ON. Allow Sentry Plus Series instrument a 15-minute warm up time.

3. Connect S02 Black ground cable to Sentry Plus Series unit RTN/LOW terminal

4. Connect S02 White/red HV cable to Sentry Plus Series unit OUTPUT terminal.

Press [F1] = PROGRAM and enter test parameters. When finished programming, press [F4] = EXIT to return to STAND BY status. Press [F4] = MORE to access Offset function. Press [F3] = OFFSET. Follow Offset

6. instructions. When Offset is complete, press [F4] = MORE to return to STAND BY.

7. Connect device under test (DUT) to test leads.

Press [START].

9. Record measurement. Press [STOP].

10.

OUTPUT

Page 20 of 85

Section 1: Introduction

1.1 Unpacking and Inspection

Inspect the shipping carton before opening. If damaged, contact the carrier agent immediately. Inspect the Sentry Plus Series instrument for an y damage. If the inst rument appears dam aged or fails to meet specifications notify QuadTech (refer to instruction manual front cover) or its local representative. Retain t he original shipping carton and packing mat erial for future use such as returning the instrument for recalibration or service.

1.2 Product Overview

The Sentry Plus Series is available in three models, the 10, 20 and 30, all of which provide AC Hipot testing capability. Additionally, the Sentry 20 & 30 Plus instruments provide DC Hipot testing. The Sentry 30 Plus unit provides Insulation Resistance testing. The hipot test can be programmed over a voltage range of 0.05 to 5kV AC and 0.05 to 6kV DC with a min/max leakage current detection range of 0.001 to 20mA AC and 0.0001 to 5mA DC. Insulation resistance measurements are possible to 50GΩ at programmable DC test voltages between 50 and 1000V. Each instrument comes standard with programmable ground continuity, internal storage containing 60 memory locations (10 steps each) and a remote interface with start/stop inputs & pass/fail outputs.

Figure 1-1: Sentry 30 Plus AC/DC/IR Hipot Tester

UL Requirements

The Sentry Plus Series instruments meet the requirements outlined by U L for Hipot Testers. The Sentry Plus indicates the test potential (test voltage), has both visual and audible indication of failure and the STOP switch must be manually pressed prior to another measurement being made. The Sentry Plus Series instrument has a 100VA output [(5000V * 20mA) = 100VA]. The Sentry Plus Series instrument also measures and displays the output voltage directly at the output terminals during the test.

Introduction Page 21 of 85

1.3 Controls and Indicators

1.3.1 Front Panel Controls and Indicators

Figure 1-2 illustrates the controls and indicators on the front panel of the Sentry Plus Series AC/DC/IR Hipot Tester. Table 1-1 identifies them with description and function.

STOP

uadTech

START

Sentry 30 Plus AC/DC/IR Hipot Tester

CAL UPDATE

11 10 9

DANGERPASS FAIL

CAUTION

Max 5kVAC

RTN/LOW

6kVDC

OUTPUT

Figure 1-2: Sentry 30 Plus Front Panel Controls & Indicators

Table 1-1: Sentry 30 Plus Front Panel Controls & Indicators

Reference Number Figure 1-2

1 Power Green Push Button Apply AC Power: 1=ON, 0=OFF 2 START Green Push Button Initiate Test: HV applied to OUTPUT terminal 3 STOP Red Push Button Stop Test: HV terminated at OUTPUT terminal 4 Display LCD Pro gram Menu, Test Setup, Measurement Results,

5 F1, F2, F3

6 OUTPUT White Custom

7 RTN/LOW Blue Banana Socket RTN: Low voltage reference terminal

8 DANGER Red LED When lit, high voltage is present at OUTPUT terminals 9 FAIL Red LED When lit, DUT judged as FAIL. Output voltage is

10 PASS Green LED When lit, DUT judged as PASS 11 UPDATE Recessed P-B Qualified Service Personnel Only 12 CAL Recessed P-B Enable/Disable Instrument Calibration

Name Type Function

Memory Contents, Calibration

Gray Push Buttons Select Instru men t Functions

and F4

Keys perform different functions under different menus. Right side of display shows corresponding key function. High Voltage (Potential) Terminal

Banana Socket

LOW: Common ground reference terminal

immediately cut off. Press [STOP] to disable FAIL LED

Page 22 of 85 Introduction

1.3.2 Rear Panel Controls and Connectors

Figure 1-3 illustrates the controls and connectors on the rear panel of the Sentry Plus Series AC/DC/IR Hipot Tester. Table 1-2 identifies them with description and function.

3254

WARNING: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE AND RATING OF FUSE AS

SPECIFIED FOR THE LINE VOLTAGE BEING UTILIZED.

CAUTION: NO O PERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED

PERSONNEL. POLLUTION DEGREE 2 INSTALL ATION CATEGORY II

VOLTAGE SELECTOR

MODEL NO. SERIAL NO.

HIGH VOLTAGE Max 5kVAC/6kVDC

HV OUTPUT

90V - 110V ~ 108V - 132V ~ 198V - 242V ~ 216V - 250V ~

RTN/LOW

3.15AT 250V

1.6AT 250V

CONT. CHECK OPTION

100V/120V/220V/240V~

50/60Hz 300W MAX

START

RESET

COM

INTER LOCK

FAN 50o C AUTO ON/OFF

10 9

Figure 1-3: Rear Panel Sentry Plus Series Instrument

Table 1-2: Sentry Plus Series Rear Panel Controls & Connectors

Reference # Figure 1-3

1 VOLTAGE

2 Remote Silver 9-pin

3 CONT CHK OPT. Black banana plug Connection for Ground Continuity Check 4 TUV CE Sticker Instrument Safety Agency Listing 5 Remote Black 5-screw

6 Fan SF11580AT

7 Ground Silver Banana Plug Instrument Chassis Ground Connection 8 AC Line Input Black 3-wire inlet

9 RTN/LOW Blue Banana Socket RTN: Low voltage reference terminal

10 HV OUTPUT White Custom

Name Type Function

SELECTOR

2 Red 2-position Slide Switches

Select Voltage Level corresponding to AC Source 90V – 110V: 3.15A 250V Slow Blow 110V – 130V: 3.15A 250V Slow Blow 200V – 240V: 1.6A 250V Slow Blow 220V – 250V: 1.6A 250V Slow Blow Remote Connection: Inputs: Start, Reset

D-Type Connector

Outputs: Pass, Fail, Und e r Test

Remote Connection: Start, Reset, Com, Interlock

Terminal Strip

Cool Unit: T≥50°C = ON, T<45°C = OFF

115V 50/60Hz 0.10A

Connection to AC power source

module & fuse holder

Fuse Drawer: 3.15A 250V or 1.6A 250V (see #1)

LOW: Common ground reference terminal Rear panel High Voltage (Potential) Terminal

Banana Socket

Introduction Page 23 of 85

1.4 Installation

1.4.1 Dimensions

The Sentry Plus series unit is supplied in a bench configuration, i.e., in a cabinet with resilient feet for placement on a table. Flip feet are provided under the front f eet so that the Sentry Plus instrument can be tilted up for convenient operator viewing.

4.50"

STOP

START

Sentry 30 Plus AC/DC/IR Hipot Tester

QuadTech

CAL UPDATE

10.50"

262.5mm

DANGERPASS FAIL

CAUTION

Max 5kVAC

RTN/LOW

6kVDC

OUTPUT

14.25"

356.25mm

112.50mm

Figure 1-4: Sentry Plus Series Instrument Dimensions

1.4.2 Instrument Positioning

The Sentry Plus unit contains a graphic display for direct readout of measured parameters. The optimum angle for viewing is slightly down and about 10 degrees either side of center. For bench operation the front flip feet should always be used to angle the instrument up. In bench or rack mount applications the instrument should be positioned with consideration for ample air flow around the rear panel fan ventilation hole. An open space of at least 3 inches (75mm) is recommended behind the rear panel. Testing should be performed on a non-conductive surface. An ESD mat is not a recommended test platform.

1.4.3 Power Requirements

The Sentry Plus instrument can be operated from a power source of 90 to 132V AC or 198 to 250V AC. Power connection is via the rear panel through a standard receptacle. Before connecting the 3-wire power cord between the unit and AC power sour ce, make sure the voltage selection switches on the rear panel (Fi gure 1-5) are in accordance with the power sour ce being used. For a 90-132V source, use a 3.15A 250V fuse. For a 198-250V so urce, use a 1.6A 250V fuse. Always use an outlet that has a properly connected protection ground.

Page 24 of 85 Introduction

WARNING

MAKE SURE THE UNIT HAS BEEN DISCONNECTED FROM ITS AC POWER SOURCE

FOR AT LEAST FIVE MINUTES BEFORE PROCEEDING.

Procedure For Changing A Sentry Plus Series Fuse

Remove the fuse drawer, by pressing the black tab located at the center of the extended fuse drawer, just below the 3-prong receptacle, and pull outward.

Once the fuse drawer has been removed from the instrument slide out the fuse from the holder and replace. Make sure the new fuse is of the proper rating. Note that the fuse drawer can also be used to store a spare fuse.

Install the fuse drawer back in the inlet module by pushing in until it locks securely in place.

VOLTAGE SELECTOR

90V - 110V ~

108V - 132V ~

198V - 242V ~

216V - 250V ~

3.15AT 250V

1.6AT 250V

100V/120V/220V/240V~

50/60Hz 300W MAX

FUSE Drawer

Figure 1-5: Close-Up of Sentry Plus Series Rear Panel

1.4.4 Safety Inspection

Before operating the instrument inspect the power inlet module on the rear of the Sentry Plus to ensure that the properly rated fuse i s in place, otherwise damage to the unit is possible. M ake sure that the voltage selector swit ches are set in accordance with the power source in use. R efer to paragraph 1.4.3 and Figure 1-5.

The Sentry Plus instrument is shipped with a standard U.S. power cord, QuadTech P/N 42000300 (with Belden SPH-386 socket or equivalent, and a 3-wire plug conforming to IEC 320). Make sure the instrument is only used with these cables (or other approved international cord set) to ensure that the instrument is provided with connection to protective earth ground.

The surrounding environment should be free from excessive dust to prevent contamination of electronic circuits. The surrounding environment should also be free from excessive vibration. Do not expose the Sentry Plus instrument to direct sunlight, extreme temperature or humidity variations, or corrosive chemicals.

Introduction Page 25 of 85

Section 2: Operation

2.1 Terms and Conventions Table 2-1: Measurement Unit Prefixes

Multiple Scientific Engineering Symbol

1000000000000000 1015 Peta P 1000000000000 1012 Tera T 1000000000 109 Giga G 1000000 106 Mega M 1000 103 Kilo k .001 10-3 milli m .000001 10-6 micro u .000000001 10-9 nano n .000000000001 10 .000000000000001 10

ARCing: Sparking or ‘flashing over’ caused by a breakdown of electrical

Current:

AC: Alternating Current. AC is an electrical current that has one

DC: Direct Current. Non-reversing polarity. The movement of charge

Charging Current: An insulated product exhibits the basic characteristics of a

-12

pico p

-15

insulation.

polarity during part of the cycle and the opposing polarity during the other part of the cycle. Residential electricity is AC.

is in one direction. Used to describe both current and voltage. Batteries supply direct current (DC).

capacitor. Application of a voltage across the insulation causes a current to flow as the capacitor charges. This current instantaneously rises to a high value as voltage is applied then exponentially decays to zero as the DUT becomes fully charged. Charging current decays to zero much faster than dielectric absorption.

femto f

Operation Page 27 of 85

Dielectric Absorption: The physical phenomenon in which insulation appears to absorb

and retain an electrical c harge slowly over time. Apply a voltage to a capacitor for an extended period of time. Then quickly discharge it to zero voltage. Leave the capacitor open circuited for a period of time then connect a voltmeter to it and measure the residual voltage. The residual voltage is caused by the dielectric absorption of the capacitor.

Dielectric Strength: The ratio between the voltage at which breakdown of the insulating

material occurs and the distance between the two poi nts subject to the applied voltage.

Dielectric Withstand Test: This is t he most common electrical safety test perform ed. A high

voltage (either AC or DC) is applied to determine if a breakdown will occur in the insulation of the DUT. Dielectric Withstand is also referred to as a hipot (high potential) test.

Discharge: The act of draining off an electrical charge to gro und. Devices that

retain charge should be discharged after an IR test or DC hipot test.

DUT: Device Under Test. (i.e. the product being tested).

Frequency: The rate at which current or voltage reverses polarity and then

back again completing a full cycle, measured in Hertz (Hz) or cycles/second. AC Line Frequency = 50/60 Hz.

Ground:

Ground: The base reference from which voltages are measured, nominall y

the same potential as the earth. Ground is also the side of a circuit that is at the same potential as the base reference.

Ground Bond Test: Test to verify that all conductive parts of a product that are

exposed to user contact are connected to the power line ground. The ground bond test verifies the integrity of the ground connection using a high current AC signal with current level as high as 30Amps. Ground bond provides a better simulation of how a product will perform under an actual fault condition.

Ground Continuity: Test to verify that all conductive parts of a product that are

exposed to user contact are connected to the power line ground. GC Test normally performed with a low current DC signal that checks to ensure the ground connection has a resistance of <1Ω.

Page 28 of 85 Operation

Insulation Resistance: Measures the total resistance between any two points separated by

electrical insulation. The IR test determines how effective the dielectric (insulation) is in resisting the flow of electrical current.

Interface:

IEEE-488: General Purpose Interface Bus (GPIB). GPIB is an industry

standard definition of a Parallel bus connection for the purpose of communicating data between devices.

RS232: An industry standard definition for a Serial line communication

link or port.

Scanner: An electronic device designed to switch or matrix signals.

Leakage Current (LC):

Leakage Current: The residual flow of current that flows through the insulation after

a high voltage has been applied for a period of time. The leaka ge current is equal to the applied voltage divided by the insulation resistance. Leakage current is the main measured value for AC hipot and DC hipot.

Applied Part LC Test: A line leakage current test that measures the current that would

flow from, to or between applied parts such as sensor and patient leads. This test is the most complicated and time-consuming line leakage test.

Earth LC Test: The most important and most common of the line leakage tests.

Earth leakage current is basically the current flowing back through the ground conductor on the power cord. It is measured by opening the ground conductor, inserting a circuit with the simulated impedance of the human body then measuring the voltage across part of the circuit with a true RMS voltmeter.

Enclosure LC Test: A line leakage test that measures t he cu rrent t hat flows throu gh the

human body if the body had touched the enclosure of the DUT.

Line LC Test: A line voltage leakage current test simulates the effect of a person

touching exposed metal parts of a product and detects whether or not the leakage current that flows through the person’s body remains below a safe level. Apply power to the product being tested, then measure the leakage current from any exposed metal on the chassis of the product under a fault condit ions such as “no ground”. A special circuit is used to simulate the impedance of the human body.

Operation Page 29 of 85

Limits:

High Limit: The upper value for a test to be conside red a pass. If the measured

value is higher than the high limit the test is considered a fail. In hipot, leakage current and ground bond test modes a high limit is required.

Low Limit: The lower value for a test to be considered a pass. If the measured

value is lower than the low limit the test is considered a fail. In insulation resistance test mode a low limit is required. In an AC or DC Hipot test, the low limit FAIL decision occurs at the end of the programmed test time.

Mode: The test to be performed such as: AC Hipot (AC), DC Hipot (DC),

Insulation Resistance (IR), Ground Continuity (GC) or Pause (PA).

Step: The order in which the tests will be performed. For example if

step 1 is a ground continuity test, step 2 an AC hipot and step 3 an insulation resistance measurement then when the START but ton is pressed, the Sentry will perform a GC test followed by an AC test then an IR test.

Test Time:

Ramp: The period of time for the voltage to climb to programmed level. Dwell: The period of time for the voltage to settle at programmed level. Test: The period of time that the voltage is applied to the DUT. Fall: The period of time for the voltage to decrease back to 0.

Test Current:

Real Current: The resistive current component of the device under test. The

resistive component is attributed to the resistance of the device’s insulation.

Total Current: A measure of the resistive and reactive current components of the

device under test. The reactive component is attributed to the capacitive or inductive components of the circuit

Total Current "A"

"A" "B"

Total Current "B"

200

> 100% Change

100 101

> 1% Change

100 100

100

Total Current

Real

(Resistive)

Current

Component

0% Change

Reactive

(Capacitive)

Current

Component

Real "B" Real "A"

Total "B"

Total "A" Reactive "B" Reactive "A"

Page 30 of 85 Operation

2.2 Startup

Check to make sure the Red Voltage Selector Switches on the rear panel agree with the power source available. Depending on the power source the switch positions should be in the up or down positions as shown in Figure 1-5 (Close-Up of Sentry Plus Series Rear Panel).

WARNING

NEVER TOUCH THE TEST LEADS IN ANY MANNER (this includes insulation on all wires and clips) when

HIGH VOLTAGE IS APPLIED and red DANGER LED is ON.

USE ALL PRECAUTIONS NECESSARY TO AVOID TOUCHING THE DEVICE UNDER TEST WH EN THE

RED DANGER LED IS ON OR FLASHING.

Connect the instrument power cord to the source of proper voltage. The instrumen t is to be used only with three-wire grounded outlets.

Power is applied to the Sentry Plus Series instrument by pressing the green [POW ER] switch on the front panel to the ON (1 position). The Sentr y Plus Series unit should warm up for a period of at least 15 minutes prior to use.

WARNING

DO NOT TURN INSTRUMENT POWER ON OR OFF WITH TEST DEVICES CONNECTED.

2.3 Programming Electrical Safety Tests

The Sentry Plus Series instrument is capable of performing the tests listed in Table 2-2. A single-step test can be performed on a device and is programmed as described in paragraphs 2.4 – 2.8. When the device under test requires a multi-step test the order of test precedence is important. Refer to paragraph 2.9 for test setup store/re call instructions and to paragraph 2.10 fo r instructions on programming a multi-step test.

Table 2-2: Sentry Plus Series Electrical Safety Tests

Test Software

Designation

Programming Instructions

Sentry Plus Series Instrument

Paragraph

Ground Continuity GC 2.4 10, 20, 30 AC Hipot AC 2.5 10, 20, 30 DC Hipot DC 2.6 20, 30 Insulation Resistance IR 2.7 30 Pause PA 2.8 10, 20, 30 Storing a Test Setup 2.9 10, 20, 30 Multi-Step 2.10 10, 20, 30

NOTE:

This manual is set up so if you follow the instructions in paragraphs 2.4 through 2.9 and you will

have programmed a 5-step test setup and stored it to memory location 1.

Operation Page 31 of 85

Function keys of the STAND BY Display

The function keys on the right hand side of the displa y allow the operator to access the numerous menus imbedded within the Sentry Plus Series instrument software. Familiarize yourself with these menus prior to programming a test. Figure 2-1 illustrates the STAND BY display and lists the functions that can be accessed by pressing the [F1] through [F4] keys.

"STAND BY" or "Power-Up" Display

Function of F1 - F4 Keys

Instrument

Status

STEP 1/1

1.250kV

15.00mA

3.0s

RMT ERROFSTLOCKSTAND BY

PROGRAM MOREMENUPRESET

MORE..

Insert Delete

STEP: 1-10 MODE: AC/DC/IR/GC/PA Voltage High Limit Test Time Low Limit ARC Limit Ramp Time Dwell Time Fall Time In Rush Current

(DC, IR)

(DC)

AC-V Freq. Memory Soft AGC. WV Auto Range IR Auto Range GFI FAIL Restart

Figure 2-1: STAND BY Function Key Menus

LOWAC ARC RAMP FALL

: OFF : OFF : OFF : OFF

F3 F4F2F1

Recall Delete

System

Contrast Buzzer Volume EN 50191 DC 50V AGC

Option

Multi-Link

Calibration

(Need password to enter)

Key Lock

(Need password to enter)

Change Password

(Need password to enter)

Error Log About

Manufacturer

Software version

PROGRAM

PRESET

MORE..

View Test Steps (Tabular Format) OffsetStore

To enter programming mode.

To view/change preset (initial) settings.

To view/change: memory, system, option,

cal., key lock, pw, error & about. To view the programmed test setups and

access offset function.

Page 32 of 85 Operation

POWER UP and STAND BY Displays

The Sentry Plus Series instruments have multiple menus or displays that may seem confusing at first glance. In an attempt to clarify the numerous functions of the software, this instruction manual will illustrate these displays in a (hopefully) logical format. The function keys (F1, F2, F3 & F4) perform different tasks depending upon the menu currently shown on the display. Figure 2-2 illustrates the instrument display when the instrument is initially turned on.

Function of F1 - F4 KeysSoftware

EXIT

Memory Calibration Line Frequency

Model #

SENTRY PLUS 30 VERSION X.XX DATA MEMORY CHECK

CALIBRATION DATA AC LINE FREQUENCY

: : :

RMT ERROFSTLOCKWAIT 3s

PASS PASS 60 Hz

Power Up Display: Instrument Initialization

Figure 2-2: Power-Up Display

After 3 seconds, the instrument display reverts to the STAND BY display as illustrated in Figure 2-3. The box in the lower left hand corner denotes the instrument status.

Test Voltage (kV) Test Current (mA) Test Time (sec)

Memory

Location Mx

x = 1-60

1.250kV

15.00mA

Test Step 1/x

3.0s

x = 1-10

STEP 1/1

Test Mode

AC, DC, IR,

GC or PA

RMT ERROFSTLOCKSTAND BY

Test

Settings

LOW : OFFAC ARC : OFF

RAMP: OFF

FALL: OFF

Function

F1 - F4 Keys

PROGRAM PRESET MENU MORE..

To enter programming mode.

To view/change preset (initial)

test parameters. To view/change system parameters: memory, system, option, calibration, key

lock, password, error, & about. To view the programmed test setups and

access offset function.

Instrument Status

STAND BY

When box is highlighted (back lit),

the function is

ON.

Remote

Status On/Off

Front Panel

Lock Out

Status On/Off

Offset Status On/Off

Error Status On/Off

Figure 2-3: STAND BY Display

To access the programming function of the Sentry Plus Series instrument in the STAND BY menu, press the [F1] key (PROGRAM). Once in the PROGRAM di splay, select the test step then the test mode (AC, DC, IR, GC or PA). Paragraphs 2.4 - 2.8 illustrate how to program the specific parameters of each of the 5 tests.

NOTE

This manual is set up so if you follow the instructions in paragraphs 2.4-2.9 you will have programmed a 5-step test

(GC, AC, DC, IR and PA) and saved to memory location 1.

Operation Page 33 of 85

PROGRAM Mode Displays

Figure 2-4 illustrates each program mode display for quick reference. The box in the lower left hand corner denotes the instrument status. For clarity, a green arrow (!) is used to denote which function key (F1 – F4) is pressed to get to the next display screen.

"STAND BY"

DISPLAY

Display

0.000kV

0.500mA

3.0s

VOLT

HIGH

TIME

VOLT

HIGH

TIME

VOLT

: LOW TIME

::3.0s

0.000kV

0.500mA

3.0s

0.000kV

0.500mA

3.0s

0.000kV

1.0M

Ω

LOWACSTEP 1/1 ARC RAMP FALL

RMT ERROFSTLOCKSTAND BY

LOWACSTEP 1/1 ARC RAMP FALL

RMT ERROFSTLOCKSELECT MODE

LOWDCSTEP 1/1 ARC RAMP

FALL I-RUS

RMT ERROFSTLOCKSELECT MODE

HIGHIRSTEP 1/1 RAMP DWELL : OFF FALL

OFF

PROGRAM PRESET MENU MORE..

OFF

UP DOWN NEXT EXIT

OFF

: :

OFFDWELL OFF

OFF

UP DOWN NEXT EXIT

OFF

UP DOWN NEXT

To enter programming mode.

To view/change preset (initial)

test parameters. To view/change system parameters:

memory, system, option, calibration, key lock, password, error, & about. To view the programmed test setups and

access offset function.

To change value in highlighted box.

To toggle choices of highlighted box.

To move highlighted box around

display to select parameter to change To exit programming mode.

To select test mode: AC/DC/IR/GC/PA

PROGRAM MODE DISPLAYS

Display

CURR

: 0.0A HIGH DWELL

PAUSE UNDER TEST SIGNAL

Ω

1.0

3.0s

PAUSE MODE

::OFF

RMT ERROFSTLOCKSELECT MODE

GCSTEP 1/1

LOW

OFF

EXIT

UP DOWN NEXT

RMT ERROFSTLOCKSELECT MODE

PASTEP 1/1

EXIT

UP DOWN NEXT

RMT ERROFSTLOCKSELECT MODE

EXIT

Figure 2-4: STAND BY & PROGRAM Mode Displays

Page 34 of 85 Operation

2.4 Programming a Ground Continuity Test

This test is applicable to the Sentry 10, 20 and 30 Plus instruments. A Ground Continuity (GC) test is usually done first to verify the ground connection before high voltage is applied in the AC & DC Hipot tests. With the instrument in ‘stand-by’ status, press [F1] = PROGRAM. The AC test mode programming screen is displayed. Follow the green arrows (!) on the right side of this diagram to program the individual GC test parameters.

VOLT:

In STAND BY:

Press [F1] =

PROGRAM

Select

Mode

Set

Current

Set

HIGH

Resistance Limit

HIGH: TIME:

CURR: HIGH: DWELL:

0.000 kV

0.500 mA

Ω

Continue on Next Page.

3.0 s

0.0 A

1.0

0.3 s

0.0A

1.0

0.3s

0.1A

1.0

0.3s

1/1

LOWACSTEP: ARC RAMP FALL

RMT ERROFSTLOCKVoltage is 0

LOWGCSTEP 1/1

Ω

RMT ERROFSTLOCKSelect Mode

LOWGCSTEP 1/1

Ω

RMT ERROFSTLOCK0.1A

LOWGCSTEP 1/1

Ω

RMT ERROFSTLOCK0.1 - 5

OFF

MORE.. NEXT EXIT

OFF

UP DOWN NEXT EXIT

OFF

INC. DEC. NEXT EXIT

OFF

INC. DEC. NEXT EXIT

To move highlighted box to AC.

To select Mode = GC

To move highlighted box to CURR.

To set current to 0.1A

To move highlighted box to HIGH.

To set High resistance limit:

0.1 - 5Ω in 0.1Ω increments.

To move highlighted box to DWELL.

Operation Page 35 of 85

Programming a GC Test (continued):

Set

DWELL

Time

Set

LOW

Resistance Limit

[F1]

: Program Step 2

[F4] : Exit Program Mode

CURR: HIGH: DWELL:

LOWGCSTEP 1/1

0.1A

Ω

1.2

0.3s

RMT ERROFSTLOCK0.1 - 1s

LOWGCSTEP 1/1

0.1A

1.2

Ω

0.5s

Ω

0.1A

1.2

Ω

0.5s

RMT ERROFSTLOCK0 - 5

LOWGCSTEP:

RMT ERROFSTLOCK1 - 10

OFF:

INC. DEC. NEXT EXIT

OFF

INC. DEC. NEXT EXIT

0.3

Ω

:1/1

NEW MORE.. NEXT EXIT

To set Dwell time:

0.1 - 1s in 0.1s increments

To move highlighted box to LOW.

To set Low resistance limit:

0 - 5Ω in 0.1Ω increments.

To move highlighted box to STEP.

To go to Step 2.

exit

programming mode and return

to STAND BY status.

END GC Test Programming. After selecting the LOW resistance limit, one can either press [F1] = NEW to change the step number in the highlighted box (1-10) and start programming STEP 2-10 OR one can press [F4] = EXIT to exit programming function and return to STAND BY status.

For this example, press [F1] = NEW and proceed to program step 2 as an AC Hipot Test (¶ 2.5).

Page 36 of 85 Operation

2.5 Programming an AC Hipot Test

This test is applicable to the Sentry 10, 20 and 30 Plus instruments. With the instrument in ‘stand-by’ status, press [F1] = PROGRAM. If continuing the 5-step example from ¶2.4, you are already in program mode and on the AC test mode page. Follow the green arrows (!) on the right side of this diagram to program the individual AC hipot test parameters.

[F1] = New

Program

Step 2 = AC

Select

Test Mode

Set

Test Voltage

Set

High Current

Limit

VOLT HIGH TIME

0.000kV:

0.500mA

3.0s

0.000kV

0.500mA

3.0s

0.000kV: : 0.500mA :

3.0s

2.750kV :

0.500mA :

3.0s

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCKVoltage is 0

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCKSelect Mode

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0.05 - 5kV

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0.001 - 20mA

OFF

FIRST MORE.. NEXT EXIT

OFF

UP DOWN NEXT EXIT

OFF

INC. DEC. NEXT EXIT

OFF

INC. DEC. NEXT EXIT

To change value in highlighted box.

To delete or insert a test step.

To move highlighted box around

display to select parameter to change To exit programming mode.

Set MODE = AC

To move highlighted box to VOLT

To set test voltage:

0.05 - 5kV in .001kV increments

To move highlighted box to HIGH.

To set high current limit:

0.001 - 20mA in .001mA increments

To move highlighted box to TIME.

Set

Test Time

Test time = 0

then continuous

voltage until STOP

is pressed.

Set

Low Current

Limit

VOLT HIGH TIME

: : :

2.750kV

15.00mA

3.0s

2.750kV

15.00mA

10.0s

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0, 0.1 - 999s

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0 - 20mA 0 = OFF

OFF

INC. DEC. ENTER EXIT

OFF

INC. DEC. NEXT EXIT

To set test time:

0, 0.1 - 999s in 0.1s increments

To move highlighted box to LOW.

To set low current limit:

0 - 20mA in 0.01mA increments

To move highlighted box to ARC.

Continue on next page.

Operation Page 37 of 85

Programming an AC Hipot Test (continued)

Set

Arc Limit

Set

Ramp Time

Set

Fall Time

Set

Test Step

[F1]

: Program Step 3

[F4] : Exit Program Mode

VOLT HIGH TIME

2.750kV

15.00mA

10.0s

2.750kV

15.00mA

10.0s

2.750kV

15.00mA

::10.0s

2.750kV

: :

15.00mA

10.0s

2/2

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK1 - 20mA 0 = OFF

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0 - 999s 0 = OFF

LOWACSTEP 2/2 ARC RAMP FALL

RMT ERROFSTLOCK0 - 999s 0 = OFF

LOWACSTEP ARC RAMP FALL

RMT ERROFSTLOCK1 - 10

: : : :

3.00mA OFF OFF OFF

3.00mA OFF

3.0s

OFF

3.00mA OFF

3.0s

INC. DEC. NEXT EXIT

NEW MORE.. NEXT EXIT

Set arc current limit:

1-20mA in 0.1mA increments

To move highlighted box to RAMP.

To set Ramp Time:

0 - 999s in 0.1s increments

To move highlighted box to FALL.

To set Fall Time:

0 - 999s in 0.1s increments

To move highlighted box to STEP.

To set next test step = 3

exit

programming mode and return

to STAND BY status.

END AC Hipot Test Programming. After selecting the FALL Time, one can either press [F1] = NEW to change the step number in the highlighted box (1-10) and start programming STEP 310, OR

one can press [F4] = EXIT to exit programming function and return to STAND BY

status.

For this example, press [F1] = NEW and proceed to program step 3 as a DC Hipot Test (¶ 2.6).

Page 38 of 85 Operation

2.6 Programming a DC Hipot Test

This test is applicable to the Sentry 20 and 30 Plus instruments. With the instrument in ‘standby’ status, press [F1] = PROGRAM. If continuing the 5-step example from ¶2.5, you are already in program mode and on the AC test mode page. The example illustrated herein shows a GC test as Step 1, an AC test as Step 2 and how to program a DC test in Step 3. Follow the green arrows (!) on the right side of this diagram to program the individual DC hipot test parameters.

[F1] = New

Program

Step 3 = DC

VOLT HIGH TIME

: :

0.000kV:

0.500mA

3.0s

LOWACSTEP 3/3 ARC RAMP FALL

RMT ERROFSTLOCKVoltage is 0

OFF

FIRST MORE.. NEXT EXIT

To change value in highlighted box.

To delete or insert a test step.

To move highlighted box around

display to select parameter to change To exit programming mode.

Select

Test Mode

Set

Test Voltage

Set

High Current

Limit

Set

Test Time

VOLT HIGH TIME

0.000kV

0.500mA

3.0s

0.000kV: : 0.500mA :

3.0s

2.500kV :

0.500mA :

3.0s

2.500kV :

2.999mA :

3.0s

LOWACSTEP 3/3 ARC RAMP FALL

RMT ERROFSTLOCKSelect Mode

LOWDCSTEP 3/3 ARC RAMP

FALL

RMT ERROFSTLOCK0.05 - 6kV

LOWDCSTEP 3/3 ARC RAMP DWELL : FALL I-RUS

RMT ERROFSTLOCK0.0001 - 5mA

LOWDCSTEP 3/3 ARC RAMP

FALL I-RUS

RMT ERROFSTLOCK0, 0.1 - 999s

OFF

UP DOWN NEXT EXIT

OFF

: : OFFDWELL

OFF

OFF:I-RUS

INC. DEC. NEXT EXIT

OFF

INC. DEC. NEXT EXIT

OFF

OFFDWELL

OFF OFF

INC. DEC. ENTER EXIT

Set MODE = DC

To move highlighted box to VOLT

To set test voltage:

0.05 - 6kV in .001kV increments

To move highlighted box to HIGH.

To set high current limit:

0.0001 - 5mA in .001mA increments

To move highlighted box to TIME.

To set test time:

0, 0.1 - 999s in 0.1s increments

To move highlighted box to LOW.

Set

Low Current

Limit

VOLT HIGH TEST

: : :

2.500kV

2.999mA

5.0s

LOWDCSTEP 3/3 ARC RAMP DWELL : FALL I-RUS :

RMT ERROFSTLOCK0 - 5mA 0 = OFF

OFF

OFF OFF

INC. DEC. NEXT EXIT

To set low current limit:

0 - 5mA in 0.001mA increments

To move highlighted box to ARC.

Continue on next page.

Operation Page 39 of 85

Programming an DC Hipot Test (Continued)

LOWDCSTEP 3/3 ARC

Set

Arc Limit

VOLT HIGH TIME

: :

2.500kV

2.999mA

5.0s

RMT ERROFSTLOCK1 - 5mA 0 = OFF

RAMP DWELL ::OFF FALL

0.015mA

OFF

OFF:

OFF

: :I-RUS OFF

INC. DEC. NEXT EXIT

Set arc current limit:

1-5mA in 0.1mA increments

To move highlighted box to RAMP.

Set

Ramp Time

Set

Dwell Time

Set

Fall Time

Set

I-Rus Limit

VOLT HIGH TIME

2.500kV

2.999mA

5.0s

2.500kV

2.999mA

5.0s

2.500kV

2.999mA

::5.0s

2.500kV

2.999mA

5.0s

LOWDCSTEP 3/3 ARC RAMP DWELL FALL

RMT ERROFSTLOCK0 - 999s 0 = OFF

LOWDCSTEP 3/3 ARC RAMP DWELL FALL

RMT ERROFSTLOCK0 - 999s 0 = OFF

LOWDCSTEP 3/3 ARC RAMP DWELL 3.0s FALL

RMT ERROFSTLOCK0 - 999s 0 = OFF

LOWDCSTEP 3/3 ARC RAMP DWELL 3.0s FALL I-RUS

RMT ERROFSTLOCK0, 0.5uA-5mA 0 = OFF

0.015mA

OFF

: :

OFF OFF

OFFI-RUS

0.015mA

OFF

: :

3.0s OFF

OFF OFFI-RUS :

0.015mA

OFF

3.0s

: : :

OFF

:I-RUS OFF

0.015mA

OFF

3.0s:

: :

3.0s

: :

OFF

INC. DEC. NEXT EXIT

To set Ramp Time:

0 - 999s in 0.1s increments

To move highlighted box to DWELL.

To set Dwell Time:

0 - 999s in 0.1s increments

To move highlighted box to FALL.

To set Fall Time:

0 - 999s in 0.1s increments

To move highlighted box to I-RUS.

Set in-rush current limit: 0, 0.5uA -5mA

in 0.001mA increments

To move highlighted box to STEP.

Set

Test Step

[F1]

: Program Step 4

[F4] : Exit Program Mode

VOLT HIGH TIME

: : :

3/3

2.500kV

2.999mA

5.0s

LOWDCSTEP ARC RAMP

FALL I-RUS : OFF

RMT ERROFSTLOCK1 - 10

0.015mA

: : : : :

OFF

3.0s

3.0sDWELL

3.0s

NEW MORE.. NEXT EXIT

To set next test step = 4

to STAND BY status.

exit

programming mode and return

END DC Hipot Test Programming. After selecting the I-RUSH limit, press [F1] = NEW to change the step number in the highlighted box (1-10) and start programming STEP 4-10, OR

press [F4] = EXIT to exit

programming function and return to STAND BY status.

For this example, press [F1] = NEW and proceed to program step 4 as an IR Test (¶ 2.7).

NOTE: The In-Rush current range is dependent on the programmed High Limit. Refer to Safety Features in the

Specifications section, page 8.

Page 40 of 85 Operation

NOTE: In-Rush Current

The In-Rush current limit fo r the DC hipot test is a low limit which is monitored during init ial charging of the device

under test. When activated (other than Off), current below the programmed value is considered to be a Fail

condition. This current monitoring is generally used to check that the charging current to the device exceeds a

specified value (> programmed limit), thus ensuring that the device is properly connected to the tester.

2.7 Programming an IR (Insulation Resistance) Test

This test is applicable to the Sentry 30 Plus instrument. With the instrument in ‘stand-by’ status, press [F1] = PROGRAM. If continuing the 5-step example from ¶2.6, you are already in program mode and on the AC test mode page. This example shows a GC test as Step1, an AC test as Step 2, a DC test as Step 3 and how to program an IR test in Step 4. Follow the green arrows (!) on the right side of this diagram to program the individual IR test parameters.

[F1] = NEW

Program

Step 4 = IR

Select

Test Mode

Set

Test Voltage

Set

Low

Resistance

Limit

VOLT HIGH TIME

VOLT LOW TIME

4/4

0.000kV:

0.500mA

3.0s

0.000kV

0.500mA

3.0s

: 0.000kV :

1.0M

Ω

3.0s

: 0.750kV :

1.0M

Ω

3.0s

Ω

LOWACSTEP ARC RAMP FALL OFF:

RMT ERROFSTLOCKVoltage is 0

LOWACSTEP 4/4 ARC RAMP FALL OFF:

RMT ERROFSTLOCKSelect Mode

HIGHIRSTEP 4/4 RAMP DWELL OFF FALL OFF

RMT ERROFSTLOCK0.05 - 1kV

HIGHIRSTEP 4/4 RAMP DWELL : FALL :

RMT ERROFSTLOCK0.1MΩ - 50G

OFF

FIRST MORE.. NEXT EXIT

OFF

UP DOWN NEXT EXIT

OFF

: : :

INC. DEC. NEXT EXIT

OFF

OFF OFF OFF

INC. DEC. NEXT EXIT

To change value of highlighted box.

To delete or insert a test step.

To move highlighted box to MODE.

To exit programming mode.

Set MODE = IR

To move highlighted box to VOLT

To set test voltage:

0.05 - 1kV in 0.001kV increments

To move highlighted box to LOW.

To set low resistance limit:

0.1M - 50G

Ω

in 0.1MΩ increments

To move highlighted box to TIME.

Set

Test Time

VOLT LOW TIME

: : :

0.750kV

1.5M

Ω

3.0s

HIGHIRSTEP 4/4 RAMP

RMT ERROFSTLOCK0, 0.1 - 999s

OFF

OFFDWELL OFFFALL

INC. DEC. NEXT EXIT

To set dwell time:

0, 0.1 -999s in 0.1s increments

To move highlighted box to HIGH.

Continue on next page.

Operation Page 41 of 85

Programming an IR (Insulation Resistance) Test (Continued)

Set

High

Resistance

Limit

Select

Ramp Time

Select

Dwell Time

Set

Fall Time

VOLT LOW TIME

0.750kV

1.5M

Ω

5.0s

0.750kV

1.5M

Ω

5.0s

: :

1.5M

Ω

5.0s

: 0.750kV :

1.5M

Ω

5.0s

HIGHIRSTEP 4/4 RAMP DWELL FALL OFF

OFF

: :

INC. DEC. NEXT

RMT ERROFSTLOCK0 - 50GΩ 0 = OFF

HIGHIRSTEP 4/4 RAMP DWELL : FALL

: :

1.250G OFF OFF OFF

Ω

EXIT

UP DOWN NEXT

RMT ERROFSTLOCK0 - 999s 0 = OFF

HIGHIRSTEP 4/4 RAMP DWELL FALL

: : :0.750kV :

1.250G

3.0s OFF OFF

Ω

EXIT

UP DOWN NEXT

RMT ERROFSTLOCK0 - 999s 0 = OFF

HIGHIRSTEP 4/4 RAMP

1.250G

3.0s

3.0s:DWELL

:FALL OFF

Ω

EXIT

INC. DEC. NEXT

To set high resistance limit:

0 - 50GΩ in 0.1MΩ increments

(from programmed low limit to 50GΩ)

To move highlighted box to RAMP.

To set ramp time:

0 - 999s in 0.1s increments

To move highlighted box to DWELL.

To set ramp time:

0 - 999s in 0.1s increments

To move highlighted box to FALL.

To set fall time:

0 - 999s in 0.1s increments

To move highlighted box to STEP.

To set next test step = 5

to STAND BY status.

exit

programming mode and return

Set

Test Step

[F1]

: Program Step 5

[F4] : Exit Program Mode

VOLT LOW TIME

4/4

: 0.750kV :

1.5M

Ω

5.0s

RMT ERROFSTLOCK0 - 999s 0 = OFF

HIGHIRSTEP RAMP DWELL : 3.0s

: :

1.250G

3.0s

3.0sFALL :

Ω

EXIT

NEW MORE .. NEXT

RMT ERROFSTLOCK1 - 10

EXIT

END IR Test Programming. After selecti ng th e F A LL Time, one can ei th er press [ F1] = N EW to change the step number in the highlighted box (1-10) and start programming STEP 5-10, OR one can press [F4] = EXIT to exit programming function and return to STAND BY status.

For this example, press [F1] = NEW and proceed to program step 5 as a PAUSE (¶ 2.8).

Page 42 of 85 Operation

2.8 Programming a Pause in Test Sequence

“PAUSE” is a mode selection that allows a test sequence to be stopped while test leads are changed or other operations performed. A 15-character user programmable message will be displayed on the screen when in PAUSE mode and the test will continue when the [START] button is pressed or when START is initiated via remote I/O. The Under Test relay on the remote I/O can also be cycled during PAUSE if required. During the test sequence when PAUSE is encountered the tester stops, displays PAUSE and 15-character message until START button is pressed again (or START is initiated via remote I/O).

This mode is applicable to the Sentry 10, 20 and 30 Plus instruments. With the instrument in ‘stand-by’ status, press [F1] = PROGRAM. If continuing the 5-step example from ¶2.7, you are already in program mode and on the AC test mode page. This example shows a GC test as Step1, an AC test as Step 2, a DC test as Step 3, an IR test as Step 4 and finall y how to program a Pause as Step5. Follow the green a rrows (!) on the right side of this diagram to program the individual Pause mode parameters. Enter a message (length 1-15 characters) for the operator.

5/5

[F1] = NEW

Program

Step 5 = PA

Select

Test Mode

Enter

Pause

VOLT HIGH TIME

VOLT HIGH

PAUSE UNDER TEST SIGNAL

0.000kV:

0.500mA

3.0s

0.000kV

0.500mA

:TIME 3.0s

PAUSE MODE

Message

Enter

Pause

PAUSE UNDER TEST SIGNAL

CHANGE-DUT

Message

Continued on Next Page.

LOWACSTEP ARC RAMP FALL OFF:

RMT ERROFSTLOCKVoltage is 0

LOWACSTEP 5/5 ARC RAMP FALL OFF:

RMT ERROFSTLOCKSelect Mode

PASTEP 5/5

OFF

RMT ERROFSTLOCK1 - 15 CHAR.

PASTEP 5/5

OFF

RMT ERROFSTLOCK1 - 15 CHAR.

OFF

FIRST MORE.. NEXT EXIT

OFF

UP DOWN NEXT EXIT

UP DOWN NEXT C. CANCEL

UP DOWN NEXT CANCEL

To change value of highlighted box.

To delete or insert a test step.

To move highlighted box to MODE.

To exit programming mode.

Set MODE = PA

To move highlighted box to

PAUSE

To enter message: 1 - 15 characters: * + , - . /

0 -9 and A - Z

To move cusor to next character.

To erase message.

To move highlighted box to UNDER.

Operation Page 43 of 85

Programming a PAUSE in test sequence (continued):

PASTEP 5/5

PAUSE

: CHANGE-DUT

Set

Test Signal

UNDER TEST SIGNAL

OFF

RMT ERROFSTLOCKOFF / ON

INC. DEC. NEXT EXIT

To set test signal:

OFF or ON

To move highlighted box to STEP.

Exit

Program

Mode

5/5

PAUSE UNDER TEST SIGNAL

CHANGE-DUT

::OFF

PASTEP

INC. DEC. NEXT

RMT ERROFSTLOCK1 - 10

EXIT

To set next test step

exit

programming mode and return

to STAND BY status.

END PA Mode Programming. For the sake of this 5-step example, after selecting the UNDER

TEST SIGNAL ON or OFF, press [F4] = EXIT to exit programming function and return to STAND BY status.

Page 44 of 85 Operation

2.9 Storing a Test Setup

NOTE:

Instrument PRESET values can be programmed and stored for your specific test setup. Therefo re

before storing your tests, program the preset values. Refer to p 2.11 for PRESET programming

information.

To store the previous example of the p rogrammed 5-step test, with the instrument in ‘STAND BY’ status, press [F3] = MENU to access the memory function.

In MENU with the highlighted box around MEMORY, press [F3] = SELECT to enter the memory function.

STAND BY

Display

0.1A

Ω

1.2

0.5s

MEMORY

SYSTEM

OPTION

CALIBRATION

KEY LOCK

LOWGCSTEP 1/5 0.3Ω:

RMT ERROFSTLOCKSTAND BY

RMT ERROFSTLOCKSELECT FUNC.

PROGRAM PRESET MENU MORE..

LAST DOWN SELECT EXIT

To enter programming mode.

To view/change preset (initial) test

parameters. To view/change system parameters:

memory, system, option, calibration, key lock, password, error, & about. To view the programmed test setups and

access offset function.

To toggle through MENU functions.

To enter MEMORY function.

Return to STAND BY display.

To store a test setup in memory

location 1-60

Recall test in highlighted location.

Delete test in highlighted location.

Return to MENU display.

MEMORY

(0 STEPS)

STORE RECALL DELETE

RMT ERROFSTLOCKSELECT FUNC.

RETURN

Press [F1] = STORE to access the store function. Press [F2] = DOWN to move highlighted box to the memory location (1-60) in which you wish to store this test setup. Press [F3] = SELECT to accept location number.

To move highlighted box to

memory location 60 To toggle through memory

locations 1-60 To select highlighted memory location and store previously

programmed test setup

Select

LOCATION

(0 STEPS)

LAST DOWN SELECT

RMT ERROFSTLOCKSEL. MEMORY

RETURN

Operation Page 45 of 85

To label the selected location, press [F1] = UP (and/or [F2] = DOWN) to enter a combination alpha-numeric name for this test setup. P ress [F3] = NEXT C. after each di git to accept that digit and move on to the next. The name can be up to 10 characters long. When finished ent ering the name, press [F3] = ENTER two times.

To enter an alpha-numeric character

To enter an alpha-numeric character Accept entered character and move

on to next character

LABEL

Test Setup

(0 STEPS) _ (0 STEPS)

(0 STEPS)

UP DOWN NEXT C.

RMT ERROFSTLOCKSELECT FUNC.

CANCEL

Press 2 Times to exit LABEL

function

Exit

Label

Function

(0 STEPS)

123

UP DOWN NEXT C.

RMT ERROFSTLOCKSEL. MEMORY

CANCEL

The display will prompt: STORE TO #? Press [F1] = YES to accept storage to that memory location # or [F2] = NO to reject storage. Press [ F4] = RETURN once to return to “MENU” display. Press [F4] a second time to return to “STAND BY” display.

Store test setup to location #1

Return to MENU display.

Confirm

STORE

MEMORY

(0 STEPS) 123

(0 STEPS)

STORE TO 1?

(0 STEPS)

(5 STEPS) 123

(0 STEPS)

RMT ERROFSTLOCK

RMT ERROFSTLOCKSELECT FUNC.

YES NO

STORE RECALL DELETE RETURN

LOWGC

PROGRAM PRESET MENU MORE..

STAND BY

Display with

Memory ID

0.1A

Ω

1.2

0.5s

1/5M01 0.3Ω:

RMT ERROFSTLOCKSTAND BY

The MEMORY RECALL and DELETE functions work the same way as STORE. When the instrument returns to STAND BY status there will be a tag “Mxx” in the upper left hand corn er of the display to indicate which memory location is in use (displayed).

Page 46 of 85 Operation

2.10 Programming a Multi-Step Test

Paragraphs 2.4, 2.5, 2.6, 2.7 and 2.8 illustrate the programming of a 5-step test (GC, AC, DC, IR & PA). To program a multiple step test, power-up the Sentry Plus Series instrument so the ‘Stand By’ display is shown (Figure 2-2). Press [F1] = PROGRAM and enter the test parameters for the first test (GC). After specif ying LOW resistance limi t, press [ F3] = NEXT and [F1] = NEW to enter test parameters for the second test (AC). At this time, do NOT press [F4] = EXIT because this will exit you from programming mode. After specifying FALL time for the second test press [F3] = NEXT to continue entering test parameters for the third test (DC). Continue this process for up to 10 steps. When finished entering desired number of test steps, press [F4] = EXIT to exit programming mode and return to Stand By status.

In Stand By status, to view the test steps just programmed press [F4] = MORE. Figure 2-4 illustrates the Stand By display and resultant test steps display if the programming example in paragraphs 2.4-2.8 was followed.

STAND BY

with

Memory ID

0.1A

1.2

Ω

0.5s

LOWGC1/5M01 0.3Ω:

RMT ERROFSTLOCKSTAND BY

PROGRAM PRESET MENU MORE..

Continuing with the 5-step example, press [F4] = MORE to view the 5 test steps (GC, AC, DC, IR & PA) stored to location 1.

Test

Steps

M01

1 2 3 4 5

OUTPUT

0.1A

2.750kV

2.500kV

DC IRPA0.750kV

OFF

MEASURE RESULT

Ω

1.2

15.00mA

2.999mA

1.5M

Ω

RMT ERROFSTLOCKSTAND BY

------------

OFFSET EXIT

Figure 2-4: View Programmed Test Setups

Operation Page 47 of 85

2.11 PRESET Test Parameters

A number of initial parameters or default conditions may be programmed and stored as the ‘power-up’ conditions. On the Sentry Plus Series instruments, this function is labeled PRESET and is accessible on the STAND BY display.

The PRESET values are stored with each programmed test. Therefore each memory location may have different PRESET values. It is important to set the PRESET values prior to storing a test program.

Table 2-3 lists the Sentry Plus Series PRESET test parameters including parameter range and initial (default) value.

Table 2-3: PRESET Test Parameters

Parameter Range Initial

(Default)

Value

AC-V FREQ. 50 or 60Hz 60Hz Set frequency for AC Hipot test SOFT. AGC ON or OFF ON Set software automatic gain control function

WV AUTO RANGE ON or OFF OFF Set hipot auto range function ON or OFF IR AUTO RANGE ON or OFF ON Set resistance auto range function ON or OFF GFI ON or OFF ON Set ground fa ult interrupt to trip at 0.5mA FAIL RESTART ON or OFF OFF Fail continue steps

Description

ON or OFF

2.11.1 AC-V FREQ.

The AC-V Frequency setting allows the user to select the line frequency for the AC hipot test. The range of AC-V Freq. is 50 or 60Hz and the instrument default setting is 60Hz.

2.11.2 SOFTWARE AGC

The Software Automatic Gain Control (SOFT AGC) setting allows the option of correcting the output voltage when ON. This is satisfactory when measuring resistors but under special circumstances when measuring large capacitive devices it is best to select Software AGC OFF. The default value is ON.

2.11.3 WV AUTO RANGE

The WV Auto Range setting allows the option of using the full scale current range (ON) or using the user programmed maximum current limit (OFF) during a withstand voltage (hipot) test. The low current range (3mA full scale) results in increased measurement resolution. The default value of WV Auto Range is OFF.

Page 48 of 85 Operation

2.11.4 IR AUTO RANGE

The IR Auto Range setting allows the option of using the full scale current range (ON) or using the user programmed maximum current lim it (OFF). To increase measurement resolution in IR mode, select IR Auto Range ON. To increase measurement speed in IR mode, select IR Auto Range OFF. The instrument default value for IR Auto Range is ON.

2.11.5 GFI

The Ground Fault Interrupt (GFI) function can be programmed ON or OFF and the instrument default setting is ON. When GFI is activated, the ground fault interrupt circuit detects leakage current to ground. If the leakage is >0.5mA, the high voltage will be shut down in less than

0.5ms.

NOTE:

When using the Sentry Plus instrument with the Sentry 50 Ground Bond Tester,

GFI must be turned OFF.

2.11.6 FAIL RESTART

The FAIL RESTART function can be programmed ON or OFF and the instrument default setting is OFF. When the Fail Restart function is turned ON, the Sentry Plus instrument does not require the STOP button to be pressed to restart the test. This mode is typically used in conjunction with the remote I/O connections to automatically restart the test when a failure occurs. This can be done by connecting one Fail contact (pin 8) to the Start contact (pin 5) and the other Fail contact (pin 9) to the COM contact (pin 3).

Operation Page 49 of 85

2.12 Instrument Offset

The Sentry Plus Series instrument provides automatic offset for lead and/or fixture effects. During the offset process a correction is made (subtracted out) as the result of the measured current with no DUT attached. For maxim um measurement ac curacy it is recom mended that the OFFSET function be performed on the Sentry Plus Series instrument after power up, any time the test parameters are changed and any time the test leads or fixture is changed. Return and HV test leads should not be connected together (open circuit) fo r AC and DC hipot tests. Return an d GC test leads should be connected (short circuit) for a GC test. There is no offset in an IR test.

Once the Offset function is turned ON for a spe cific program, it can be stored in memory with that program. If the program parameters are changed the offset function will automatically turn OFF and the offset function will be need to be performed again to get the new offset value. It will then need to be restored in memory.

Prior to performing the OFFSET function:

•

Allow the instrument to warm up for 15 minutes. Connect the Test cables (or fixture) to the OUTPUT and RTN/LOW connectors. Program the test steps.

With the instrument in STAND BY status:

•

Press [F4] = MORE Press [F3] = OFFSET Follow instructions on display: i.e.: connect OPEN across OUTPUT terminal. Press green [START] button. Wait while instrument gets OFFSET value. The OFST block at the bottom of the display is now highlighted (back lit). Press [F4] = MORE to return to STAND BY status.

To undo the OFFSET function:

•

Press [F3] = OFFSET Follow prompt on display: “Turn off the offset function?” Press [F3] = ENTER to turn off OFFSET function. The OFST block at the bottom of the display is not highlighted now.

The following formulas apply to the offset function:

For Offset Current

Display Current

For Offset Current > 100mA:

Display Current Measured Total Current Offset Total Current-=

100mA:

Measured Total Current Offset Total Current

Page 50 of 85 Operation

OFFSET Function

There is no offset in the IR or PA modes. Using the pre-programmed example from paragraphs

2.4-2.8 of the GC, AC, DC, IR & PA 5-step test the resultant error and correction is illustrated herein.

0.3

Ω

PROGRAM PRESET MENU MORE..

To access OFFSET function.

"STAND BY"

Display

with

Memory ID

M01 :

LOWGCSTEP 1/5

0.1A

1.2

Ω

0.5s

RMT ERROFSTLOCKSTAND BY

[F4]

GET

OFFSET

OFFSET VALUES

M01 MEASURE RESULT

1 2AC 3 4 5GCPA

OUTPUT

0.1A

2.750kV 15.00mA

DCIR2.500kV

0.750kV 1.5M CHANGE-DUT

1.2

Ω

2.999mA

Ω

-------------

RMT ERROFSTLOCKSTAND BY

PLEASE OPEN THE HV OUTPUT TERMINAL.

NO OFFSET IN IR MODE.

PRESS TEST KEY TO GET OFFSET..

RMT ERROFSTLOCK

M01 MEASURE RESULT

1 2AC 3 4 5GCPA

OUTPUT

0.1A

2.753kV 0.07mA

DCIR2.499kV

0.750kV 1.5M CHANGE-DUT

0.1

Ω

0.002mA PASS

Ω

PASS PASS

SKIPPED

RMT ERROFSTLOCKU.T.S = OFF

M01 5/5 PA

1.2.PAUSE: CHANGE-DUT UNDER TEST SIGNAL: OFF

PRESS TEST KEY TO CONTINUE..

U.T.S = OFF

RMT ERROFSTLOCK

OFFSET MORE..

CANCEL

MORE..

To enter OFFSET function.

To return to STAND BY status

START

To GET OFFSET values

M01 5/5 PA

1.2.PAUSE: CHANGE-DUT UNDER TEST SIGNAL: OFF

PASS

RMT ERR

LOCK

OFST

MORE..

After PASS Screen, press [STOP] and screen reverts to STAND BY display. Continue on Next Page.

Operation Page 51 of 85

Offset (continued)

To turn to Offset function OFF, and return to STAND BY status, follow the screens herein.

[F4]

M01 :

LOWGC1/5 0.3

0.1A

1.2

Ω

0.5s

RMT ERR

LOCKSTAND BY

OFST

Ω

PROGRAM PRESET MENU MORE..

5-Steps Programmed

Offset ON

Ready to Test

M01 MEASURE RESULT

1 2AC 3

[F4]

[F3]

[F4]

DCIR2.500kV 4 5GCPA

M01 5/5 PA

PLEASE OPEN THE H.V.

OUTPUT TERMINAL.

NO OFFSET IN IR MODE.

M01 MEASURE RESULT

1 2AC 3

DCIR2.499kV 4 5GCPA

M01 :

0.1A

[F4]

1.2

0.5s

End Offset Function.

OUTPUT

0.1A

2.750kV 15.00mA

0.750kV 1.5M CHANGE-DUT

OUTPUT

0.1A

2.753kV 0.07mA

0.750kV 1.5M CHANGE-DUT

1.2

Ω

2.999mA --------

0.1

Ω

0.002mA -------

Ω

--------

Ω

RMT ERR

Ω

--------

LOCKPASS

LOCK

-------

OFST

RMT ERROFSTLOCKPASS

LOWGCSTEP 1/5 0.3

Ω

RMT ERROFSTLOCKSTAND BY

OFFSET MORE..

OFF

CANCEL

OFFSET MORE..

PROGRAM PRESET MENU MORE..

Turn select

Offset function

Turn Offset OFF

Go to Results page

Go to STAND BY page

5-Steps Programmed

Offset OFF

Ready to Test

Page 52 of 85 Operation

2.13 Connection to Device under Test

Figure 2-5 illustrates the connection of the Sentry Plus Series unit to a single DUT using the S02 1-meter HV cable set that comes standard with the instrument. The custom white banana plug/red alligator clip is connected between the OUTPUT terminal on the Sentry Plus Series unit and the high side of the device under test. The black banana plug/alligator clip is connected between the RTN/LOW terminal on the Sentry Plus Series unit to the low side of the DUT.

STOP

START

uadTech

1.250kV

0.500mA

3.0s

STAND BY OFST

Sentry 30 Plus AC/DC/IR Hipot Tester

STEP 1/5

CAL UPDATE

RMT LOCK ERR

LOW: OFF ARC: OFF RAMP: OFF

FALL: OFF

CAUTION

6kVDC

RTN/LOW

PROGRAM PRESET MENU

MORE..

DANGERPASS FAIL

Max 5kVAC

OUTPUT

S02

Cable

Set

DUT

Figure 2-5: S02 Cable Connection

Refer to paragraphs 3.2 through 3.7 for the description and illustration of the connection of several QuadTech accessories to the Sentry Plus Series instrument.

Operation Page 53 of 85

2.14 Measurement Procedure

Before a measurement is made verify the following:

1. Sentry Plus Series instrument [POWER] ON.

2. 15-minute warm-up.

3. Test parameters programmed and shown on STAND BY display.

4. Test cables or fixture connected.

5. Offset Function initiated.

6. Device under test connected.

The operator has the option of performing a test at power-up conditions (test conditions at which the instrument was last powered down) or recalling one of 60 stored test setups. Refer to paragraphs 2.4 – 2.9 for test programming and storage/recall instructions.

To initiate a test:

•

Press [STOP] to make sure instrument is in STAND BY status. Press [START]. DANGER led flashes. Status window shows UNDER TEST. The test voltage is shut off when all test steps are completed,

OR when a test result is judged a FAIL per programmed test limits, OR when the [STOP] button is pressed.

Press [STOP] at any time to terminate the output voltage and stop the test.

The Sentry Plus Series instrument judges the measurement value as GOOD or NO GOOD. A GOOD judgment means the DUT passed all programmed steps. Upon com pletion of the test the output voltage is terminated and the display shows PASS. The rear panel PASS signal is functional and the buzzer sounds (if not turned OFF in SYSTEM parameters under MENU).

If a multiple step test is running and one step in the sequence fails, the Sentry Plus instrument will not continue with the remaining steps

If the measurement value of the test (or any one step of the test) does not meet programmed limits, the DUT is judged as NO GOOD, the display will show FAIL and the buzzer will sound until the [STOP] button is pressed. The [STOP] button may be pressed at any time to terminate the output voltage and stop the test.

Page 54 of 85 Operation

Error Messages (FAIL result)

When the measurement value was judged NO GOOD and FA IL is shown on the di spla y, an error message denoting the test result will be shown on the display also. Table 2-4 lists the possible error messages for a NO GOOD/FAIL judgment.

Table 2-4: Error Messages

Error Message Description

HIGH FAIL Measured value (current or resistance) is over the programmed high limit. LOW FAIL Measured value (current or resistance) is below the programmed low limit. ARC FAIL Current arc is over the programmed high limit. I/O FAIL Hardware Current Limit exceeded. Check DUT for short. VOLTAGE OVER Voltage reading is greater than the hardware allo wable # of digits. CURRENT OVER Current reading is greater than the hardware allowable # of digits. GFI TRIPPED Ground Fault Interrupt is No Good. NO OUTPUT Output is too Low. (Try increasing test time) INRUSH FAIL Charging Current is over limit. (Check test fixture) MEMORY FULL Greater than 60 tests/slot have been stored.

Operation Page 55 of 85

2.15 MENU Parameters

With the Sentry Plus Series instrument in STAND BY status, press [F3] = MENU to access programmable instrument parameters. The MENU display contains the Memory, System, Option, Calibration, Key Lock, Change Password, Error Log and About functions. Table 2-5 lists these functions with description and default values.

Table 2-5: MENU Parameters

MENU # Parameter Function

1 MEMORY Store, Recall or Delete a test setup from

instrument memory

2 SYSTEM Change display contrast

Change beeper volume Enable EN 50191 Current limit

Enable DC 50V AGC 3 OPTION Multi-Link function, currently unavailable 4 CALIBRATION Enter instrument calibration routine

Qualified service personnel only. 5 KEY LOCK Lock out front panel program access. 6 CHANGE PASSWORD Change key lock (user) password. 7 ERROR LOG View status of error queue. 8 ABOUT Instrument Information

Manufacturer, software version, etc

STAND BY

0.1A

1.2

Ω

0.5s

MEMORY

SYSTEM

OPTION

CALIBRATION

KEY LOCK

CHANGE PASSWORD

ERROR LOG

ABOUT

MEMORY

SYSTEM

LOWGCSTEP 1/5M01 OFF:

RMT ERROFSTLOCKSTAND BY

Figure 2-6: Menu Display

PROGRAM PRESET MENU MORE..

LAST DOWN SELECT EXIT

Press F3 = "MENU"

To set/change preset parameters

Press F2 = "DOWN" 5 times to

view complete menu choices

Page 56 of 85 Operation

2.15.1 MEMORY

Within the MEMORY function is the ability to STORE, RECALL or DELETE test setups, preset parameters and offset values. There are 60 memory locati ons avail able and a single loc ation ma y contain 1-10 steps. The total memory array is 60 and the instrument uses up to 10 locations to run the test(s). If a 3-step test is programmed th en the instrument uses 3 additional steps to run the test. Therefore five 10-step sequences, fift y-nine 1-step sequences or a combination therein could be programmed. If more than 50 locations are stored, then the Sentry Plus will prompt “memory full” when the store function is accessed again.

To move to #8, About.

To toggle through MENU functions.

To enter MEMORY function.

Return to STAND BY display.

To store a test setup in memory

location 1-60

Recall test in highlighted location.

Delete test in highlighted location.

Return to MENU display.

MEMORY

SYSTEM

OPTION

CALIBRATION

KEY LOCK

(0 STEPS)

LAST DOWN SELECT

RMT ERROFSTLOCKSELECT FUNC.

EXIT

STORE RECALL DELETE

RMT ERROFSTLOCKSELECT FUNC.

RETURN

Select

LOCATION

LABEL

Confirm

STORE

MEMORY

(0 STEPS)

STORE TO 1?

(0 STEPS)

(5 STEPS) 123

(0 STEPS)

123

LAST DOWN SELECT

RMT ERROFSTLOCKSEL. MEMORY

RETURN

UP DOWN NEXT C.

RMT ERROFSTLOCKSEL. MEMORY

CANCEL

YES NO

RMT ERROFSTLOCK

STORE RECALL DELETE

RMT ERROFSTLOCKSELECT FUNC.

RETURN

Figure 2-7: Memory Function

To move highlighted box to

memory location 60 To toggle through memory

locations 1-60 To select highlighted memory

location and store previously programmed test setup

Press 2 Times to exit LABEL

function

Store test setup to location #1

Return to MENU display.

Operation Page 57 of 85

To Recall a Test Setup:

With the Sentry Plus instrument in Stand By status:

Press [F3] = MENU. Press [F3] = SELECT to select MEMORY from the menu parameters list. Press [F2] = RECALL to select the recall function. Press [F1] = LAST or [F2] = DOWN to toggle through the test steps.

When the highlighted box is around the test step you want (3. 3 steps),

Press [F3] = SELECT.

The Sentry Plus instrument will prompt: “Recall From 3?”

Press [F1] = YES to recall the test setup or [F2] = NO to select another test setup. Press [F4] = RETURN to go back to the MENU display. Press [F4] = EXIT to return the instrument to STAND BY status.

When the Sentry Plus has Key Lock turned ON, the user has the option to lock out recall or allow for programs to be recalled. If Recall is allowed when Key Lock is ON, then the Recall function is accessible from the Stand By Menu. This lets the operator recall a memory location without having to navigate through the menu system.

STAND BY

0.1A

1.2

Ω

0.5s

STAND BY

LOWGC1/5M01 0.3Ω:

RMT ERROFST

LOCK

KEY LOCK RECALL MENU MORE..

To change Key Lock Status to OFF

To recall test setup from Memory

To Recall with Key Lock ON in STAND BY status:

Press [F2] = RECALL Press [F1] = LAST or [F2] = DOWN to toggle through test setups. When the desired test setup is highlighted (backlit): Press [F3] = SELECT and you will automatically return to STAND BY status.

To DELETE a Test Setup:

With the Sentry Plus instrument in Stand By status:

Press [F3] = MENU. Press [F3] = SELECT to select MEMORY from the menu parameters list. Press [F3] = DELETE to select the delete function. Press [F1] = LAST or [F2] = DOWN to toggle through the test steps.

When the highlighted box is around the test step you want (3. 3 steps),

Press [F3] = SELECT.

The Sentry Plus instrument will prompt: “Delete From 3?”

Press [F1] = YES to delete the test setup or [F2] = NO to select another test setup. Press [F4] = RETURN to go back to the MENU display. Press [F4] = EXIT to return the instrument to STAND BY status.

Page 58 of 85 Operation

2.15.2 SYSTEM

Within the SYSTEM function are four programmable parameters: Contrast, Beeper Volume, EN50191 and DC 50V AGC. With the instrument in Stand By status, access these system parameters by pressing [F3] = MENU. Press [F2] = DOWN to move the highlighted box to SYSTEM.

STAND BY

0.1A

1.2

0.5s

Ω

LOWGCSTEP 1/5M01 0.3Ω:

RMT ERROFSTLOCKSTAND BY

PROGRAM PRESET MENU MORE..

Press F3 = "MENU"

To change instrument parameters

Press F2 = "DOWN" to move

highlighted box to SYSTEM Press F3 = "SELECT" to enter

SYSTEM parameters

Press F1 = "INC." to increase

brightness of display Press F2 = "DEC." to decrease

brightness of display Press F3 = "NEXT" to move

highlighted box to Buzzer Volume Press F4 = "RETURN" to go back

to MENU display

SYSTEM

MEMORY

SYSTEM

OPTION

CALIBRATION

KEY LOCK

CONTRAST

BUZZER VOLUME

EN 50191

DC 50V AGC

LAST DOWN SELECT

RMT ERROFSTLOCKSELECT FUNC.

OFF

RMT ERROFSTLOCK1 - 15

EXIT

INC. DEC. NEXT RETURN

2.15.2.1 CONTRAST

The CONTRAST parameter adjusts the brightness of the LCD display. The range is 1-15 with 15 being the brightest and 1 being the darkest. The initial default setting is 7.

2.15.2.2 BEEPER VOLUME

The BEEPER VOLUME can be adjusted from L (low) to M (medium) to H (high, loud) or it can be turned OFF. The initial default setting is H (a loud pitch).

2.15.2.3 EN50191

The EN50191 function sets the maximum leakage current at 3mA AC or 5mA DC in accordance with the European standard. When EN50191 is ON, the Sentry Plus Series instrument will terminate the voltage at the output terminals when the leaka ge current ex ceeds 3mA AC or 5mA DC. The EN 50191 function can be set ON or OFF and the initial setting is OFF.

Operation Page 59 of 85

EN50191 (The Erection and Operation of Electrical Test Installations) specifies safet y guidelines for both the test equipment and stations used in production lines, laboratories, test houses and other test environments. The 3mA AC/5mA DC leaka ge curr ent li mi t is just one electrical sa fety measure in attempting to specify ‘full protection from live parts’ for the operator and the DUT.

2.15.2.4 DC 50V AGC

The Automatic Gain Control (AGC) circuit is used to keep the output sign al of a circuit constant as the amplitude of the input signal varies. So when the DC 50V AGC function is ON, the output voltage is held constant at 50V for a DC hipot test. The DC 50V AGC function can be set ON or OFF and the initial default setting is ON. This applies to a programmed voltage of 50V only.

NOTE:

Only in highly specialized applications should the DC 50V AGC function be set to OFF. The default value is ON

because in normal test modes, it is necessary to keep the output signal constant as the amplitude of the input signal

varies to obtain stable results.

2.15.3 OPTION

Within the OPTION function is the multi-link parameter. The multi-link function is not available in the current software version. This option may be available in future software updates.

2.15.4 CALIBRATION

The CALIBRATION function requires a password to enter the instrument routine. Only qualified service personnel with NIST traceable standards should perform instrument calibration. Refer to paragraph 4.3 for the full Sentry Plus Series calibration procedure.

Page 60 of 85 Operation

2.15.5 KEY LOCK

To lock out the PROGRAM, PRESET and MENU functions of the Sentry Plus Series instrument use the KEY LOCK function in the MENU parameters. The initial instrument setting is OFF. To activate the KEY LOCK function with the instrument in STAND BY status:

•

Press [F3] = MENU Press [F2] = DOWN until KEY LOCK is backlit. Press [F3] = SELECT

STAND BY

•

KEYLOCK

0.1A

1.2

0.5s

MEMORY

SYSTEM

OPTION

CALIBRATION KEY LOCK

LOWGCSTEP 1/5M01 0.3

Ω

RMT ERROFSTLOCKSTAND BY

RMT ERROFSTLOCKSELECT FUNC.

Ω

PROGRAM PRESET MENU MORE..

UP DOWN SELECT EXIT

Press F3 = "MENU"

To change instrument parameters

Press F2 = "DOWN" to move

highlighted box to KEY LOCK Press F3 = "SELECT" to enter

KEY LOCK function

Display prompts ‘USER PASSWORD’ Press [A] [A] [A] [A ] [E N T E R]

NOTE: AAAA is the default password. If password has been changed use the new password.

Press F1 = "A" to input password

KEY LOCK USER PASSWORD

RMT ERROFSTLOCK1 - 10 CHAR.

xxxx

A B: ENTER RETURN

character Press F2 = "B" to input password

character Press F3 = "ENTER" to enter

whole password Press F4 = "RETURN" to go back

to MENU display

Operation Page 61 of 85

KEY LOCK (continued)

•

Display prompts ‘RECALL LOCK?’

NOTE: This means: “Do you want to lock out the ability to recall memory locations?”

Press [F1] = YES to select KEY LOCK ON.

NOTE: Selecting YES disallows the recalling of programmed tests from memory.

The LOCK block at bottom of display is backlit.

KEY LOCK ON!

KEYLOCK

RECALL LOCK?

Press F1 = "YES" to turn ON key

YES NO

RMT ERROFSTLOCKYES / NO

CANCEL

lock function Press F2 = "NO" to turn OFF key

lock function

Press F4 = "CANCEL" to go back

to MENU display

Press F4 = "EXIT" to go back to

STAND BY display

MEMORY

SYSTEM

OPTION

CALIBRATION KEYLOCK

SELECT FUNC.

RMT ERROFST

LOCK

UP DOWN SELECT EXIT

•

STAND BY

Press [F4] = EXIT to return to STAND BY status.

LOWGC1/5M01 0.3Ω:

0.1A

1.2

Ω

0.5s

STAND BY

RMT ERROFST

LOCK

KEY LOCK RECALL MENU MORE..

To change Key Lock Status to OFF

To recall test setup from Memory

To disable the KEY LOCK function, repeat above steps (note: there is no co nfirmation page “Recall Lock?”).

Page 62 of 85 Operation

2.15.6 CHANGE PASSWORD

The Sentry Plus Series instruments have a password function for locking out the front panel so that the instrument PRESET settings and PROGRAM function are disabled. The CHANGE PASSWORD function applies to the initial instrument password. The password is comprised of “A” or “B” characters and can be 1-10 characters in length. To activate the CHANGE PASSWORD function with the instrument in STAND BY status:

•

Press [F3] = MENU Press [F2] = DOWN until CHANGE PASSWORD is backlit. Press [F3] = SELECT

STAND BY

•

PASSWORD

LOWGCSTEP 1/5M01 0.3Ω:

0.1A

1.2

Ω

0.5s

RMT ERROFSTLOCKSTAND BY

MEMORY

SYSTEM

OPTION

CALIBRATION

KEYLOCK

RMT ERROFSTLOCKSELECT FUNC.

PASSWORD

ERROR LOG

ABOUT

MEMORY

SYSTEM

RMT ERROFSTLOCKSELECT FUNC.

Display prompts ‘ USER PASSWORD’ Press [A] [A] [A] [A ] [E N T E R]

CHANGE PASSWORD USER PASSWORD

xxxx

RMT ERROFSTLOCK1 - 10 CHAR.

PROGRAM PRESET MENU MORE..

UP DOWN SELECT EXIT

A B: ENTER RETURN

Press F3 = "MENU"

To change instrument parameters

Press F2 = "DOWN" to move

highlighted box to PASSWORD

Press F3 = "SELECT" to enter

PASSWORD function

Press F1 = "A" to input password

character Press F2 = "B" to input password

character Press F3 = "ENTER" to enter

whole password Press F4 = "RETURN" to go back

to MENU display

Operation Page 63 of 85

•

PASSWORD

Display prompts ‘NEW PASSWORD’ Press [B] [B] [B] [B] [ENTER] Display prompts ‘CONFIRM’ Press [B] [B] [B] [B] [ENTER] Display prompts ‘CHANGE PASSWORD OK’.

CHANGE PASSWORD NEW PASSWORD

CHANGE PASSWORD CONFIRM

RMT ERROFSTLOCK1 - 10 CHAR.

xxxx

A B ENTER

Press F1 = "A" to input password

character Press F2 = "B" to input password

character Press F3 = "ENTER" to enter

whole password

Press F1 = "A" to input password

character Press F2 = "B" to input password

character Press F3 = "ENTER" to enter

whole password

PASSWORD

•

CHANGE PASSWORD OK!

RMT ERROFSTLOCK

RETURN

Press F4 = "RETURN" to go back

to MENU display

Press [F4] = RETURN to exit password function and return to MENU display. Press [F4] = EXIT to go to STAND BY display.

Page 64 of 85 Operation

2.15.7 ERROR LOG

The Sentry Plus Series instruments have an Error Log to track invalid remote commands. The remote interface is not available at this time.

2.15.8 ABOUT

The Sentry Plus Series instruments have a parameter labeled ‘About’. This parameter lists the instrument manufacturer, software version and date. To view the cont ents of ABOUT with the instrument in STAND BY status:

•

Press [F3] = MENU Press [F2] = DOWN until ABOUT is backlit. Press [F3] = SELECT Display lists the contents of ABOUT.

Return to MENU

ABOUT

Display

RMT ERROFSTLOCKABOUT

RETURN

Figure 2-8: ABOUT Display

Operation Page 65 of 85

Section 3: Interface

3.1 Remote

A 9-pin D-Series remote control connector is located on the rear panel of the Sentry Plus Series instrument. There is a black 5 screw terminal strip for the remote input signals: START, RESET, COM and INTERLOCK. Inputs require a contact closure. Figure 3-1 illustrates the Remote terminal strip connector and 9-pin D-Series connector.

Before connecting the instrument to its power source, the interlock function on the rear panel remote connector (terminal strip) must be properly utilized. This is an important safety feature for the protection of the operator. When the INT ERLOCK jumper is removed, there is no high voltage at the OUTPUT. Therefore, to initiate a test make sure the interlock jumper is in place.

UNDER TEST

RESET START

FAILPASS

9-pin D-Series Remote Connector

5-screw Remote Terminal Strip

START RESET COM

INTER LOCK

Figure 3-1: Sentry Plus Series Remote Connectors

The Sentry Plus Series instrument has three output signals on the rear panel. The UNDER TEST relay is closed during a test. The PASS relay is closed when the DUT is judged GOOD. The FAIL relay is closed when the DUT is judged NO GOOD. These relays are rated for voltage up to 115VAC and current <100mA.

Interface Page 67 of 85

Figures 3-2 and 3-3 illustrate possible remote control connections to the Sentry Plus Series terminal strip. Use extreme care when usin g a remote control connection as the High Voltage Output is being turned ON and OFF with an external signal.

START

RESET

COM

INTER LOCK

Figure 3-2: Single Control of START or RESET

START

RESET

COM

INTER LOCK

Figure 3-3: Continuous Control of RESET

START

RESET

COM

INTER LOCK

COM

RESET

START

Ic'

Photocoupler ON

20ms

Figure 3-4: Logic Components as Control Circuit

Figure 3-4 illustrates the usage of logic components (transistor, FET or couplers) as a control

≤

circuit. To use this system to control the circuit, the low signal current must be

2mA and the input signal’s active time must be > 20ms. The relay switch in Figure 3-2 or the coupler control in Figure 3-4 uses the component’s contact for the control action, not both. This can effectively prevent operation interference however be observant of interference induced by measurement settings.

START and RESET terminals have unregulated 24VDC present. To initiate a test connect the START and COM terminals. The input time duration is approximately 20milliseconds. The above input circuits are not isolated from other internal ci rcuits. To terminate a test connect the RESET and COM terminals.

Page 68 of 85 Interface

Figure 3-5 illustrates the timing diagram for the Sentry Plus Series instruments under a PASS condition and a FAIL condition.

PASS CONDITION FAIL CONDITION

START

OPEN

UNDER TEST

OPEN

PASS

FAIL

RESET

OPEN

180ms

0.5ms

COM

INTERLOCK

OPEN

Figure 3-5: Sentry Plus Series Timing Diagram

Interface Page 69 of 85

3.2 G16 International Power Strip

The Sentry Plus Series instruments can be connected to the G16 International Power Strip as illustrated in Figure 3-6 for safety testing of many European corded products.

*Australia *United Kingdom *Denmark *North America *Norway *Finland *Sweden *Germany *Netherlands *Austria *Switzerland *Italy

1. Connect the three G-16 ground connectors to the Sentry Plus RTN/LOW terminal.

2. Note: there is a second RTN/LOW terminal on the rear of the Sentry instrument.

3. Connect the white banana plug to the Sentry Plus OUTPUT terminal.

4. Plug DUT’s AC power cord into corresponding module on G16 power strip.

Sentry 30 Plus Hipot Tester

STOP

START

uadTech

Sentry 30 Plus AC/DC/IR Hipot Tester

Green

Lug

RTN

OUTPUT

White Custom Banana

Plug

OUTPUT

CAL UPDATE

DANGERPASS FAIL

Green/

Yellow

Lug

RTN

or RTN

on Rear

Panel

CAUTION

Max 5kVAC

6kVDC

RTN/LOW

Black

Banana

Plug

RTN

G16 International Power Strip

QuadTech

AUSTRALIA UNITED KINGDOM DENMARK NORTH AMERICA

NORWAY FINLAND

SWEDEN

GERMANY

AUSTRIA NETHERLANDS

SWITZERLAND ITALY

Figure 3-6: G16 International Power Strip Connection to Sentry 30 Plus

Page 70 of 85 Interface

3.3 S07 Power Entry Adapter Cable

The S07 Power Entry Adapter Cable is a 3-wire AC inlet recept acle for precise t esting of corded products. The S07 cable is connected to the Sentry Plus Series instrument via a two-lead set.

1. Remove DUT’s power cord form its AC inlet module.

2. Plug S07 Power entry adapter into DUT’s AC inlet module.

3. Connect the white custom banana plug to the Sentry Plus OUTPUT terminal. Connect black banana plug with retaining bracket to the Sentry Plus RTN/LOW terminal.

4. For GC test, connect GC Lead (700100) to rear Sentry Cont Check terminal and metal on case of DUT.

Figure 3-7 illustrates this connection of the S07 cable to a Sentry 30 Plus instrument.

REAR Sentry Plus Inst rument

WARNING: FOR CONTINUED PROTECTION AGAINST F IRE HAZARD, REPLAC E ONLY WITH THE SAME TYPE AND RATING OF FUSE AS

SPECIFIED FOR THE LINE VOLTAGE BEING UTILIZED.

CAUTION: NO OPERATOR SERVICEABL E PARTS INSIDE. REFER SERVICING TO QU ALIFIED

PERSONNEL. POLLUTION D EGREE 2 INSTALLATION CATEGORY II

VOLTAGE SELECTOR

MODEL NO. SERIAL NO.

HIGH VOLTAGE Max 5kVAC/6kVDC

HV OUTPUT

90V - 110V ~ 108V - 132V ~ 198V - 242V ~ 216V - 250V ~

RTN/LOW

3.15AT 250V

1.6AT 250V

CONT. CHECK OPTION

100V/120V/220V/240V~

50/60Hz 300W MAX

START

RESET

COM

INTER LOCK

FAN 50o C AUTO ON/OFF

Ground Continuity Connection

DUT

(Monitor)

STOP

START

Remove DUT's power

cord

uadTech

Sentry 30 Plus AC/DC/IR Hipot Tester

CAL UPDATE

DANGERPASS FAIL

from AC inlet module

Plug S07 Adapter into

DUT's AC inlet module

Figure 3-7: S07 Power Entry Adapter Cable

CAUTION

Max 5kVAC

6kVDC

Black

Banana

Plug with

Retaining

Bracket

RTN/LOW

S07

Power Entry

Adapter

RTN/LOW

Hipot

Connection

OUTPUT

Custom

White

Banana

Plug

OUTPUT

Interface Page 71 of 85

3.4 S03 Corded Product Adapter (115V)

The S03 Corded Product Adapter is a 3-prong electrical outlet box to facilitate testing of corded products. The S03 cable is connected to the Sentry Plus Series instrument via a two-lead set.

1. Connect the black banana plug to the Sentry Plus RTN/LOW.

2. Connect the white banana plug to the Sentry Plus OUTPUT terminal. Plug the DUT’s 3-wire power cord into the S03 corded product adapter.

For GC test, connect GC Lead (700100) to rear Sentry Cont Check terminal and metal on case of DUT.

Figure 3-8 illustrates this connection of the S03 cable to a Sentry 30 Plus instrument.

WARNING: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE AND RATING OF FUSE AS

SPECIFIED FOR THE LINE VOLTAGE BEING UTILIZED.

CAUTION: NO OPER ATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED

PERSONNEL. POLLUTION DEGREE 2 INSTALL ATION CATEGORY II

VOLTAGE SELECTOR

MODEL NO. SERIAL NO.

HIGH VOLTAGE Max 5kVAC/6kVDC

HV OUTPUT

90V - 110V ~ 108V - 132V ~ 198V - 242V ~ 216V - 250V ~

RTN/LOW

3.15AT 250V

1.6AT 250V

CONT. CHECK OPTION

100V/120V/220V/240V~

50/60Hz 300W MAX

START

RESET

COM

INTER LOCK

FAN 50o C AUTO ON/OFF

Ground Continuity Connection

STOP

START

uadTech

Sentry 30 Plus AC/DC/IR Hipot Tester

CAL UPDATE

DANGERPASS FAIL

QuadTech

CAUTION

Max 5kVAC

6kVDC

Black

Banana

Plug

RTN/LOW

Hipot

Connection

DUT plugged into

OUTPUT

Custom

White

Banana

Plug

OUTPUT

S03 Adapter

20A 125V

DO NOT TOUCH WHILE UNDER TEST

MAX. VOLTAGE 5kVAC 6kVDC

DUT (Monitor)

Product Adapter

Figure 3-8: S03 Corded Product Adapter

Page 72 of 85 Interface

S03 Corded

3.5 S05 Foot Switch

The S05 Foot Switch provides hands-free remote testing capability. The spade leads on the S05 Foot Switch are connected (screwed) to the terminal strip on the rear panel of the Sentry Plus Series instrument.

1. Connect (screw) the white wire/spade connector to the START terminal.

2. Connect (screw) the red wire/s pade connector to the COM terminal.

Figure 3-9 illustrates this connection of the S05 Foot Switch to a Sentry 30 Plus instrument.

Terminal Strip rear of Sentry 30 Plus

WARNING: FOR CONTINUED PROTECTION AGAINST FIRE HAZAR D, REPLACE ONLY WITH THE SAME TYPE AND RATING OF FUSE AS

SPECIFIED FOR THE LINE VOLTAGE BEING UTILIZED.

CAUTION: NO O PERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED

PERSONNEL. POLLUTION DEGREE 2 INSTALLA TION CATEGORY II

VOLTAGE SELECTOR

MODEL NO. SERIAL NO.

HIGH VOLTAGE Max 5kVAC/6kVDC

HV OUTPUT

90V - 110V ~ 108V - 132V ~ 198V - 242V ~ 216V - 250V ~

RTN/LOW

3.15AT 250V

1.6AT 250V

CONT. CHECK OPTION

100V/120V/220V/240V~

50/60Hz 300W MAX

START

RESET

COM

INTER LOCK

FAN 50o C AUTO ON/OFF

White

Wire &

Spade

Terminal

Strip:

START

Red Wire & Spade

Terminal

Strip:

COM

S05 Foot Switch

Figure 3-9: S05 Foot Switch

Interface Page 73 of 85

3.6 S08 Gun Probe

The S08 Gun Probe provides fast testing capability with pinpoint control. Use the black lead o f the S02 Lead Set with the S08 Gun Probe.

1. Connect the S02 black banana plug to the Sentry Plus RTN/LOW terminal.

2. Connect the S02 black alligator clip to the low side of the DUT.

3. Connect the white banana plug to the Sentry Plus OUTPUT terminal.

Figure 3-10 illustrates this connection of the S08 probe to a Sentry 30 Plus unit.

STOP

START

uadTech

Sentry 30 Plus AC/DC/IR Hipot Tester

CAL UPDATE

DANGERPASS FAIL

Use S02 Lead:

Black Banana Plug

to RTN/LOW

CAUTION

Max 5kVAC

RTN/LOW

6kVDC

S08

GUN PROBE

OUTPUT

Custom

White

Banana

Plug

OUTPUT

++++

Rack

DUTs

----

Figure 3-10: S08 Gun Probe connected to Sentry 30 Plus Hipot Tester

Page 74 of 85 Interface

3.7 S50 Plus Ground Bond Tester

The Sentry Plus Series instrument can be connected to the Sentry 50 Plus Ground Bond Tester for high current ground testing between chassis and power cord ground. The output current is programmable from 1A to 30A AC in 0.01A increments and resistance can be measur ed over the range 0.1mΩ to 510mΩ. The rear panels of the Sentry Plus Series instrument and Sentry 50 Plus instrument are connected via the S15 9-pin interconnection cable. Figure 3-11 illustrates the front panel connections of the two instruments. NOTE: GFI must be turned OFF on the Sentry

Plus unit when it is used with the Sentry 50 Plus instrument.

STOP

START

STOP

START

S50 Plus Ground Bond Tester

uadTech

CAL UPDATE

uadTech

G15

Banana to

Alligator

Cable

Sentry 30 Plus AC/DC/IR Hipot Tester

DANGERPASS FAIL

Sentry 50 Plus GROUND BOND TESTER

Banana/Banana CableSentry 30 Plus AC/DC/IR Hipot Tester

plugged into

DUT

G13

CAUTION

Max 5kVAC

6kVDC

DRIVE SENSESENSE

RTN/LOW

QuadTech

OUTPUT

PASS FAIL

DANGER

HIGH

CURRENT

RTN/LOW

DUT

(Monitor)

125

20A

DO NOT TOUCH WHILE

UNDER TEST

MAX. VOLTAGE 5kVAC 6kVDC

G13

Corded Product Adaptor

Figure 3-11: Guardian 1030S & Sentry 50 Plus Connection

Interface Page 75 of 85

Section 4: Service & Calibration

4.1 General

Our warranty (at the front of this manual) attests to the quality of materials and workmanship in out products. If malfunction should be suspected, or other information desired, applications engineers are available for technical assistance. Applications assistance is avai lable in the U.S. by calling (978) 461-2100 and asking for Applications Support. For support outside of the United States please contact your local QuadTech Distributor. Service/Calibration and

Distributor information is also available online.

4.2 Instrument Return Before returning an instrum ent to QuadTech for service please call our Customer Care Center

(CCC) at 800-253-1230 for Return Material Authorization (RMA). It will be necessary to

include a Purchase Order Number to insure expedient processin g, although units found to be in warranty will be repaired at no-charge. For any questions on repair costs or shipping instructions please contact our CCC Department at the afore-mentioned number. To safeguard an instrument during storage and shipping, please use packaging that is adequate to protect it from damage, i.e. equivalent to the original packagin g, and mark the box “Delicat e Electroni c Instrument”. R eturn material should be sent freight prepaid to:

QuadTech, Inc. 5 Clock Tower Place, 210 East Maynard, Massachusetts 01754

Attention: RMA#

Shipments sent collect cannot be accepted.

4.3 Calibration

Calibration of the Sentry Plus Series instruments is recommended on an annual basis. If the unit is returned to QuadTech for factory calibration, refer to paragraph 4.2 for RMA and shipping instructions. Using the calibration procedure in paragraph 4.3.1, the Sentry Plus Series instrument may be calibrated by a qualified service person IF traceable calibration equipment and standards are available. The instrument should be powered up for a minimum of 30 minutes prior to calibration to ensure maximum stability.

Service & Calibration Page 77 of 85

Table 4-1: Calibration Equipment

Equipment Requirements Equipment Requirements

AC/DC High Voltage Volt meter Measure: 0 to 6kV, 0.1% accuracy AC/DC Current Meter Measure: 0 to 40mA, 0.1% accuracy 1GΩ Resistance Standard 100MΩ Resistance Standard 10MΩ Resistance Standard 500kΩ Resistance Standard

250V 500V 1200V, 0.12m A, 0. 25W; 500V; 1kV 1200V, 2.4mA, 0.25W

250kΩ Res. Std 100kΩ Res. Std 80kΩ Res. Std 1Ω Resistor 3Ω Resistor

1200V, 5mA, 5W ; 1250V 7mA 400V, 4mA, 50W; 1200V 12mA 1200V, 15mA, 100W

0.1A

4.3.1 Calibration Parameters

Table 4-2 contains the calibration parameters for the Sentry Plus Series instruments. All tests points are not required for each of the instruments (10 Plus, 20 Plus & 30 Plus).

Table 4-2: Calibration Parameters

PRODUCT TEST RANGE CAL. POINT

Voltage Calibration 10/20/30 CAL ACV 5kV OFST 0.050kV 10/20/30 CAL ACV 5kV FULL 4.000kV 20/30 CAL DCV 6kV OFST 0.050kV 20/30 CAL DCV 6kV FULL 4.000kV 30 CAL IR 1kV OFST 0.050kV 30 CAL IR 1kV FULL 1.000kV Current Calibration 10/20/30 CAL ACA 3mA OFST 10/20/30 CAL ACA 3mA FULL 10/20/30 CAL ACA 15mA OFST 10/20/30 CAL ACA 15mA FULL 20/30 CAL DCA 3mA OFST 20/30 CAL DCA 3mA FULL 20/30 CAL DCA 5mA OFST 20/30 CAL DCA 5mA FULL

0.12mA / 10MΩ

2.4mA / 500kΩ

2.4mA / 500kΩ 12mA / 100kΩ

0.12mA / 10MΩ

2.4mA / 500kΩ

4.8mA / 250kΩ

WAC & WDC Arcing Calibratio n 10/20/30 CAL AC ARC 15mA Arc 7.00mA 20/30 CAL DC ARC 5mA Arc 5.00mA IR Resistance Calibration 30 CAL IRR Range1 30 CAL IRR Range2 30 CAL IRR Range3 30 CAL IRR Range4

1000MΩ 100MΩ 10MΩ 10MΩ

Range 1 Range 2 Range 3 Range 4

1000M = 1.00GΩ

100.0MΩ

10.0MΩ

Ground Continuity Calibration 10/20/30 CAL GC 10/20/30 CAL GC

1Ω 3Ω

OFST FULL

1Ω 3Ω

Contrast Calibration 10/20/30 CAL CONTRAST 11 11 13

Page 78 of 85 Service & Calibration

4.3.2 Enable Calibration

The instrument should be powered up for a minimu m of 30 minutes prior to calibration to ensure maximum stability. With the Sentry Plus Series instrument in standby status ([STOP]

button previously pressed and no warning lights flashing) remove the Calibration seal over the hole labeled “CAL’ on the front panel and push the recessed switch to the IN position.

The unit is in STAND BY status. Press [F3] = MENU. Press [F2] = DOWN three times until CALIBRATION is highlighted (backlit). Press [F3] = SELECT to choose calibration function. Display will prompt for a password. Press [A] [A] [A] [B ] [ENTER] Cal Step 1: ‘ACV 5kV Offset (50V)’ is displayed on the screen.

NOTE

The ‘Calibration is OFF’ display may occur if the CAL recessed switch has not been pressed IN

prior to entering Calibration function.

Figure 4-1: Calibration Password Prompt

NOTE:

When in the Calibration Routine:

Pressing [UP] or [DOWN] scrolls through the calibration steps. Pressing [START] initiates the calibration of the particular step

Pressing [INC.] or [DEC.] adjusts the Standard Value

Pressing [ENTER] accepts the calibration value.

Pressing [STOP] completes calibration of the particular step.

Service & Calibration Page 79 of 85

4.3.3 AC Voltage Calibration

Connect the OUTPUT terminal of the Sentry Plus Series unit to the input terminal of the AC/DC high voltage meter. Connect the RTN/LOW terminal of the Sentry Plus to the GND terminal of the voltmeter. Set the voltmeter to AC and 2kV range.

Cal Step 1: ‘ACV 5kV Offset (50V)’

Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACV Offset” display (incorporating new cal value).

Press [F1] = UP to go to Cal Step 2: ‘ACV 5kV Full (4kV)’. Change voltmeter range to 20kV. Press [STOP] to return instrument to steady state. Press [START] to get full value Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACV Full” display (incorporating new cal value).

4.3.4 DC Voltage Calibration (DCV)

Change the setting on the Valhalla voltmeter to DC and 2kV range. DC calibration is applicable to the Sentry 20 Plus and Sentry 30 Plus instruments.

Press [F1] = UP to go to Cal Step 3: ‘DCV 6kV Offset (50V)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCV Offset” display (incorporating new cal value).

Press [F1] = UP to go to Cal Step 4: ‘DCV 6kV Full (4kV)’. Change voltmeter range to 20kV. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCV Full” display (incorporating new cal value).

Page 80 of 85 Service & Calibration

4.3.5 IR Voltage Calibration (IRV)

Keep the setting on the Valhalla voltmeter at DC and 2kV range. IR calibration is applicable to the Sentry 30 Plus instrument.

Press [F1] = UP to go to Cal Step 5: ‘IRV 1kV Offset (50V)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “IRV Offset” display (incorporating new cal value).

Press [F1] = UP to go to Cal Step 6: ‘IRV 1kV Full (1kV)’. Change voltmeter range to 20kV. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the Sentry Plus display reads the same as the voltmeter. Press [ENTER] to accept reading. Sentry Plus reverts to “IRV Full” display (incorporating new cal value).

Service & Calibration Page 81 of 85

4.3.6 AC Current Calibration (ACA)

Connect the OUTPUT terminal of the Sentry Plus Series instrument to a resistance box or resistance standard. Connect an AC/DC current meter in series between the resistance load (box/standard) and the RTN/LOW terminal of the Sentry Plus instrument. Table 4-3 lists the resistance loads necessary for the current calibration steps.

Table 4-3: Resistance Loads

Mode Step # Voltage Calibration

Point

ACA CAL 7 1200 V 0.12mA ACA CAL 8 1200 V 2.4mA full ACA CAL9 1200 V 2.4mA ACA CAL 10 1200 V 12mA DCA CAL 11 1200 V 0.12mA DCA CAL 12 1200 V 2.4mA full DCA CAL 13 1200 V 2.4mA DCA CAL 14 1200 V 4.8mA

Resistance (Load)

10MΩ 500kΩ 500kΩ 100kΩ 10MΩ 500kΩ 500kΩ 250kΩ

Press [F1] = UP to go to Cal Step 7: ‘ACA 3mA Offset (0.12mA)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACA 3mA Offset” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 8: ‘ACA 3mA Full (2.4mA)’. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACA 3mA Full” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 9: ‘ACA 15mA Offset (2.4mA)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACA 30mA Offset” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 10: ‘ACA 15mA Full (12mA)’. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “ACA 30mA Full” display (incorporating the new cal value).

Page 82 of 85 Service & Calibration

4.3.7 DC Current Calibration

Press [F1] = UP to go to Cal Step 11: ‘DCA 3mA Offset (0.12mA)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCA 3mA Offset” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 12: ‘DCA 3mA Full (2.5mA)’. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCA 3mA Full” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 13: ‘DCA 5mA Offset (2.4mA)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCA 15mA Offset” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 14: ‘DCA 5mA Full (4.8mA)’. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter. Press [ENTER] to accept reading. Sentry Plus reverts to “DCA 15mA Full” display (incorporating the new cal value).

Service & Calibration Page 83 of 85

4.3.8 ARC Calibration

ARC calibration is part of the calibration routine but it is not performed on the Sentry Plus instruments. ARC Calibration is set at the factory. To by-pass these two steps:

Press [F1] = UP to go to Cal Step 15: ‘AC ARC 15mA (7mA)’. BY-PASS Press [F1] = UP to go to Cal Step 16: ‘DC ARC 5mA (5mA)’. BY-PASS

4.3.9 IR Resistor Calibration (IRR)

Connect the resistance load (per Table 4-2) between the Sentry Plus instrument’s OUTPUT terminal and RTN/LOW terminal.

Press [F1] = UP to go to Cal Step 17: ‘IRR Range1 (1GΩ)’. Press [STOP] to return instrument to steady state. Press [START] to get range1 value. Press [F1] = INC or [F2] = DEC until the Splus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “IRR Range1” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 18: ‘IRR Range2 (100MΩ)’. Press [STOP] to return instrument to steady state. Press [START] to get range2 value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “IRR Range2” display (incorporating the new cal value).

Press [F1] = UP to go to Cal Step 19: ‘IRR Range3 (10MΩ)’. Press [STOP] to return instrument to steady state. Press [START] to get range3 value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “IRR Range3” display (incorporating the new cal value).

Ω

Press [F1] = UP to go to Cal Step 20: ‘IRR Range4 (10M

)’.

Press [STOP] to return instrument to steady state. Press [START] to get range4 value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “IRR Range4” display (incorporating the new cal value).

Page 84 of 85 Service & Calibration

4.3.10 Ground Continuity Calibration

GC 5

ΩΩΩΩ

Offset (1

ΩΩΩΩ

)

Connect a 1Ω load resistor between the Sentry Plus instrument’s rear panel RTN/LOW terminal and Ground Continuity Option terminal.

Press [F1] = UP to go to Cal Step 21: ‘GC 5Ω Offset (1Ω)’. Press [STOP] to return instrument to steady state. Press [START] to get offset value. Press [F1] = INC or [F2] = DEC until the Splus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “GC 5Ω Offset” display (incorporating the new cal value).

GC 5

ΩΩΩΩ

Full (3

ΩΩΩΩ

)

Connect a 3Ω load resistor between the Sentry Plus instrument’s rear panel RTN/LOW terminal and Ground Continuity Option terminal.

Press [F1] = UP to go to Cal Step 22: ‘GC 5Ω Full (3Ω)’. Press [STOP] to return instrument to steady state. Press [START] to get full value. Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as certified load value. Press [ENTER] to accept reading. Sentry Plus reverts to “GC 5Ω Full” display (incorporating the new cal value).

4.3.11 Contrast Calibration This calibration step is by-passed. If setup is selected, the display contrast will be set to a level

of 7. Display contrast can be adjusted as specified in paragraph 2.15.2.1.

4.3.12 Finalize Calibration

When all calibration steps are complete:

Press [F4] = EXIT

Release the [CAL] enable switch to the OUT position using the tip of a small screwdriver.

1. Press [F2] = DOWN three times.

2. Press [F3] = SELECT

3. Display prompts: ‘PASSWORD’.

4. Press [A] [A] [A] [A] [ENTER]

5. Display prompts: ‘Select Software Calibration?’

6. Press [F1] = ON to set Calibration Values ON.

Service & Calibration Page 85 of 85

Quadtech Sentry 30 Plus, Sentry 20 Plus, Sentry 10 Plus User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual