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

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: [phone]

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 defects 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)
Voltage Display:	Frequency:	50/60Hz selectable
	Accuracy:	± (1% of reading +5V)
AC Current Display:	Resolution:	1Volt
	Range:	0.001mA to 20mA AC, in 1µ A 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)
DC Current Display:	Resolution:	1Volt
	Range:	0.0001mA to 5mA DC
	Resolution:	0.1µ A
	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	0.1µ A – 300µ A		0.5µ A – 300µ A
	2	0.301mA – 3.000mA		5µ A – 3.000mA
	3	3.01mA – 5.0mA		50µ A – 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: 10µ	s
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
	* Test Time is limited ≤		60seconds when the voltage and high current 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:	•	90 - 130V AC			•	50 or 60Hz
	•	200 - 250V AC			•	300W max
Supplied:	•	Instruction Manual			•	Power Cable
	•	Calibration Certificate			•	S02 Test Leads
	•	Ground Continuity Lead
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

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 test level and serious injury or electrical shock hazards could result if the DUT is touched.

3.Never touch the metal of the High Voltage probe directly. 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 any 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 extremely 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 is 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 between 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 proper 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 injury 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 power 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

M1

STEP 1/1

AC

LOW

: OFF

PROGRAM

F1

1.250kV

ARC

: OFF

RAMP

: OFF

PRESET

F2

15.00mA

FALL

: OFF

MENU

F3

3.0s

Instrument

MORE..

F4

STAND BY

RMT

LOCK

OFST

ERR

Status

F1

F2

F3

F4

PROGRAM

PRESET

MENU

MORE

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.

MORE..		AC-V Freq.	Memory	View Test Steps (Tabular Format)
Insert		Soft AGC.	Store	Offset
Delete		WV Auto Range	Recall
NEXT		IR Auto Range	Delete
STEP: 1-10		GFI	System
MODE: AC/DC/IR/GC/PA		FAIL Restart	Contrast
Voltage			Buzzer Volume
High Limit			EN 50191
Test Time			DC 50V AGC
Low Limit			Option
ARC Limit			Multi-Link
Ramp Time			Calibration
Dwell Time	(DC, IR)		(Need password to enter)
Fall Time			Key Lock
In Rush Current (DC)			(Need password to enter)
			Change Password
			(Need password to enter)

Error Log

About

Manufacturer

Software version

Figure COI-1: Sentry Plus Series Menus

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

AC

Display

	DC
	Display
DISPLAYS	Display
MODE
	IR
PROGRAM
	GC
	Display

PA

Display

STEP 1/1

AC

LOW

:

OFF

PROGRAM

ARC

:

OFF

0.000kV

RAMP

:

OFF

PRESET

0.500mA

FALL

:

OFF

MENU

3.0s

MORE..

STAND BY

RMT

LOCK

OFST

ERR

STEP 1/1

AC

LOW

:

OFF

UP

ARC

:

OFF

VOLT

:

0.000kV

RAMP

:

OFF

DOWN

HIGH

:

0.500mA

FALL

:

OFF

TIME

:

3.0s

NEXT

EXIT

SELECT MODE

RMT

LOCK

OFST

ERR

STEP 1/1

DC

LOW

:

OFF

UP

ARC

:

OFF

VOLT

:

0.000kV

RAMP

:

OFF

DOWN

HIGH

:

0.500mA

DWELL :

OFF

TIME

:

3.0s

FALL

:

OFF

NEXT

I-RUS

:

OFF

EXIT

SELECT MODE

RMT

LOCK

OFST

ERR

STEP 1/1

IR

HIGH

:

OFF

UP

RAMP

:

OFF

VOLT

:

0.000kV

DWELL :

OFF

DOWN

LOW

:

1.0MΩ

FALL

:

OFF

TIME

:

3.0s

NEXT

EXIT

SELECT MODE

RMT

LOCK

OFST

ERR

STEP 1/1

GC

LOW

:

OFF

UP

CURR

:

0.0A

DOWN

HIGH

:

1.0Ω

DWELL :

3.0s

NEXT

EXIT

SELECT MODE

RMT

LOCK

OFST

ERR

STEP 1/1

PA

UP

PAUSE

:

PAUSE MODE

DOWN

UNDER TEST SIGNAL : OFF

NEXT

EXIT

SELECT MODE

RMT

LOCK

OFST

ERR

	F1	To enter programming mode.
	F2	To view/change preset (initial)
		test parameters.
		To view/change system parameters:
	F3	memory, system, option, calibration, key
		lock, password, error, & about.
	F4	To view the programmed test setups and
		access offset function.
	F1	To change value in highlighted box.
	F2	To toggle choices of highlighted box.
	F3	To move highlighted box around
		display to select parameter to change
	F4	To exit programming mode.
	F1	To select test mode: AC/DC/IR/GC/PA
	F2
	F3
	F4
	F1	To select test mode: AC/DC/IR/GC/PA
	F2
	F3
	F4
	F1	To select test mode: AC/DC/IR/GC/PA
	F2
	F3
	F4
	F1	To select test mode: AC/DC/IR/GC/PA
	F2

F3

F4

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

Page 17 of 85

Condensed Operating Instructions (Continued)

Table COI-1: Test Parameter Setup

Step	Test Parameter	AC Hipot	DC Hipot	IR	GC	Range
1	To enter	[F1] =	[F1] =	[F1] =	[F1] = PROGRAM
	programming mode	PROGRAM	PROGRAM	PROGRAM
2	Select Test Step	[F1] = UP	[F1] = UP	[F1] = UP	[F1] = UP	1-10
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT
3	Select Test Mode	[F1] = UP	[F1] = UP	[F1] = UP	[F1] = UP	AC, DC, IR, GC, PA
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT
4	Set Test Voltage	[F1] = INC.	[F1] = INC.	[F1] = INC.	[F1] = INC.	0.05-5kV AC
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	0.05-6kV DC
	Set Current (GC)					0.05-1kV IR
						0.1A GC
5	Set High Limit *	[F1] = INC.	[F1] = INC.	[F1] = INC.	[F1] = INC.	0.001-20mA AC
	Set Low Limit (IR)	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	0.0001-5mA DC
						0.1-50000MΩ IR
						0, 0.1-5Ω GC
6	Set Test Time	[F1] = INC.	[F1] = INC.	[F1] = INC.	[F1] = INC.	0, 0.1-999s AC
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	0, 0.1-999s DC
	Set Dwell (GC) ***					0, 0.1-999s IR
						0.1-1s GC
7	Set Low Limit **	[F1] = INC.	[F1] = INC.	[F1] = INC.	[F1] = INC.	0-20mA AC
	Set High Limit (IR)	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	[F3] = NEXT	0-5mA DC
						0-50GΩ IR
						0-5Ω GC
8	Set ARC Limit	[F1] = INC.	[F1] = INC.			1-20mA AC
		[F3] = NEXT	[F3] = NEXT			1-5mA DC
9	Set Ramp Time	[F1] = INC.	[F1] = INC.	[F1] = INC.		0-999s AC
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT		0-999s DC
						0-999s IR
10	Set Dwell Time***		[F1] = INC.	[F1] = INC.		0-999s DC
			[F3] = NEXT	[F3] = NEXT		0-999s IR
11	Set Fall Time	[F1] = INC.	[F1] = INC.	[F1] = INC.		0-999s AC
		[F3] = NEXT	[F3] = NEXT	[F3] = NEXT		0-999s DC
						0-999s IR
12	Set In-Rush Current		[F1] = INC.			0, 0.5uA-5mA DC
			[F3] = NEXT
13a	To program next test	[F1] = NEW	[F1] = NEW	[F1] = NEW	[F1] = NEW	Program next step
	step OR	OR	OR	OR	OR	OR
13b	To exit	[F4] = EXIT	[F4] = EXIT	[F4] = EXIT		Exit programming
	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.

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	QuadTech Sentry 30 Plus AC/DC/IR Hipot Tester						F1
	1.	Please open the HV output terminal				F1	F2
START	2.	No offset in IR mode.				F2
							F3
						F3
		PRESS START KEY TO GET OFFSET..				F4	F4
1 0		CAL UPDATE	PASS	FAIL	DANGER	RTN/LOW	OUTPUT
					!
						CAUTION
						Max 5kVAC
						6kVDC

When ready, press [START] to get offset values

OPEN

- +

Figure COI-3: Zero/Offset OPEN Configuration

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		QuadTech Sentry 30 Plus AC/DC/IR Hipot Tester								F1
		M1	STEP 1/5	AC	LOW: OFF		PROGRAM		F1	F2
		1.250kV			ARC: OFF
					RAMP: OFF		PRESET		F2
START		0.500mA
					FALL: OFF		MENU			F3
									F3
		3.0s
							MORE..		F4
			STAND BY	RMT	LOCK	OFST	ERR			F4
1	0		CAL UPDATE	PASS	FAIL	DANGER			RTN/LOW	OUTPUT
							!
								CAUTION
								Max 5kVAC
								6kVDC

S02

Cable

Set

- + DUT

COI-4: Connection to Device under Test

Measurement Mode

1.Turn [POWER] ON.

2.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.

5.Press [F1] = PROGRAM and enter test parameters. When finished programming, press [F4] = EXIT to return to STAND BY status.

6.Press [F4] = MORE to access Offset function. Press [F3] = OFFSET. Follow Offset instructions. When Offset is complete, press [F4] = MORE to return to STAND BY.

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

8.Press [START].

9.Record measurement.

10.Press [STOP].

Page 20 of 85

Section 1: Introduction

1.1Unpacking and Inspection

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

1.2Product 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 UL 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

1.3Controls and Indicators

1.3.1Front 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.

						4		5
STOP		QuadTech Sentry 30 Plus AC/DC/IR Hipot Tester						F1
3
							F1	F2
START							F2
								F3
							F3
2
							F4	F4
1	0	CAL	UPDATE	PASS	FAIL	DANGER	RTN/LOW	OUTPUT
						!
1							CAUTION	6
							Max 5kVAC
							6kVDC
		12	11	10	9	8	7

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

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

Reference	Name	Type	Function
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	Program Menu, Test Setup, Measurement Results,
			Memory Contents, Calibration
5	F1, F2, F3	Gray Push Buttons	Select Instrument Functions
	and F4		Keys perform different functions under different menus.
			Right side of display shows corresponding key function.
6	OUTPUT	White Custom	High Voltage (Potential) Terminal
		Banana Socket
7	RTN/LOW	Blue Banana Socket	RTN: Low voltage reference terminal
			LOW: Common ground 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
			immediately cut off. Press [STOP] to disable FAIL LED
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

Page 22 of 85

Introduction

1.3.2Rear 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.

2

3

4

5

6

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 OPERATOR SERVICEABLE PARTS ! INSIDE. REFER SERVICING TO QUALIFIED

PERSONNEL.

POLLUTION DEGREE 2 INSTALLATIONCATEGORY II

VOLTAGE SELECTOR

90V - 110V ~

1 108V - 132V ~

198V - 242V ~

216V - 250V ~

MODEL NO.

SERIAL NO.

HIGH VOLTAGE

Max 5kVAC/6kVDC

HV OUTPUT

RTN/LOW

1	5
6	9

3.15AT	CONT. CHECK OPTION
250V

1.6AT

250V

100V/120V/220V/240V~ 50/60Hz 300W MAX

FAN 50o C AUTO ON/OFF

START

RESET

COM

INTER

LOCK

10

9

8

7

Figure 1-3: Rear Panel Sentry Plus Series Instrument

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

Reference #	Name	Type	Function
Figure 1-3
1	VOLTAGE	2 Red 2-position	Select Voltage Level corresponding to AC Source
	SELECTOR	Slide Switches	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
2	Remote	Silver 9-pin	Remote Connection: Inputs: Start, Reset
		D-Type Connector	Outputs: Pass, Fail, Under Test
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	Remote Connection: Start, Reset, Com, Interlock
		Terminal Strip
6	Fan	SF11580AT	Cool Unit: T≥ 50° C = ON, T< 45° C = OFF
		115V 50/60Hz 0.10A
7	Ground	Silver Banana Plug	Instrument Chassis Ground Connection
8	AC Line Input	Black 3-wire inlet	Connection to AC power source
		module & fuse holder	Fuse Drawer: 3.15A 250V or 1.6A 250V (see #1)
9	RTN/LOW	Blue Banana Socket	RTN: Low voltage reference terminal
			LOW: Common ground reference terminal
10	HV OUTPUT	White Custom	Rear panel High Voltage (Potential) Terminal
		Banana Socket

Introduction

Page 23 of 85

1.4Installation

1.4.1Dimensions

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 feet so that the Sentry Plus instrument can be tilted up for convenient operator viewing.

4.50"

112.50mm

STOP								F1
		QuadTech	Sentry 30 Plus AC/DC/IR Hipot Tester
							F1	F2
START							F2
								F3
							F3
							F4	F4
1	0	CAL	UPDATE	PASS	FAIL	DANGER	RTN/LOW	OUTPUT

CAUTION	14.25"
Max 5kVAC
6kVDC
	356.25mm

10.50"

262.5mm

Figure 1-4: Sentry Plus Series Instrument Dimensions

1.4.2Instrument 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.

1.4.3Power 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 source, make sure the voltage selection switches on the rear panel (Figure 1-5) are in accordance with the power source being used. For a 90-132V source, use a 3.15A 250V fuse. For a 198-250V source, 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		100V/120V/220V/240V~
		50/60Hz 300W MAX
	90V - 110V ~	3.15AT
	108V - 132V ~	250V
	198V - 242V ~	FUSE Drawer
		1.6AT
	216V - 250V ~	250V

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

1.4.4Safety Inspection

Before operating the instrument inspect the power inlet module on the rear of the Sentry Plus to ensure that the properly rated fuse is in place, otherwise damage to the unit is possible. Make sure that the voltage selector switches are set in accordance with the power source in use. Refer 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