Ideal ND2291 User Manual

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#61-152 #61-153
SureTest®Model ST 1D Instructions
Introduction
The SureTest®family of circuit analyzers identify problems common to electrical circuits quickly, easily and accurately. They have a patented voltage drop test, which applies a full 15 ampere load without causing interruption to equipment on the circuit.
Product Features
• Identifies and Locates Loose Wire Connections Bad Splices/Receptacles High Resistance Grounds False (Bootleg) Grounds Shared Neutrals
• Verifies Proper Wiring in 3-Wire Receptacles Proper GFCI Operation Dedicated Circuit Presence Isolated Ground Presence (with the 61-176 Isolated Ground Adapter)
• Measures Line Voltage Ground Impedance % Voltage Drop by Conducting an Actual Full 15 Amp Load Test % Voltage Drop by Simulating a 20 Amp Load Test GFCI Trip Time Neutral-to-Ground Voltage Estimated Load on Circuit
General Operation
The SureTest®Model ST-1D Circuit Analyzer takes only seconds to test each outlet and circuit under a full load. The ST-1D indicates proper wiring, volt­age drop and line voltage in an easy pass/fail format. A simple program­ming menu gives access to measurements of line voltage, voltage drop at a full 15 amperes and 20 amperes, ground-to-neutral voltage, estimated load on the circuit and ground impedance. The ground fault circuit interrupter (GFCI) test is performed separately and will disrupt the electrical supply if a functional GFCI is present.
Any discrepancies from a normal reading indicates that a problem has been detected in the circuit.
For use in 3-prong (grounded) outlets, inset the ST-1D into the receptacle with the ground pin extended. For use in 2-prong (non-grounded) outlets, leave the ground pin retracted. Non-grounded (2-prong) outlets will be tested for voltage drop and line voltage only.
WARNING
Do not use on outputs from UPS systems, light dimmers or square wave generating equipment.
Insert the unit in the receptacle, observe test results, remove and reinsert the unit while pressing the test button to perform the ground impedance test, and then move on to the next receptacle. Allow at least 20 seconds between insertions. Repeatedly inserting the SureTest into a receptacle will exceed its ability to dissipate heat within the unit, resulting in fluctuating readings or damage to the unit.
False Ground Indication
Sometimes 2-wire receptacles are replaced with 3-wire receptacles to accommodate 3-wire plugs. A short placed between ground and neutral on the back of the receptacle will test and appear to be a normal 3-wire circuit. Common receptacle testers will test this configuration as a normal 3-wire outlet.
Display of "FG" on the LED display on power-up indicates a suspected false ground. False ground is defined as a short between the ground and neutral wires very close to the receptacle. A false ground may also be indicated if the receptacle is within 15 feet of the neutral-ground bonding point at the panel, or if conduit is being used as the ground conductor.
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Specifications
Case Construction: GE Cycolac molded plastic Operating Range: 108 to 132 Volts (61-152)
207 to 253 v. (61-153) Power Consumption: 1 Watt contin; 1800 W peak Wiring Indications: Pass/Fail format. Digital Display: Seven segment L.E.D., .3 Operating Temp.: 0 C to 50 C Storage Temp.: -20 C to +65 C Dimensions: 17.78 x 7.62 x 3.81 cm Weight: 200 grams (7 ounces)
Accuracy
Line Voltage: ±2.5% full scale ±1 digit Voltage Drop: ±2.5% full scale ±1 digit Ground-to-Neutral Voltage: ±2.5% full scale ±1 digit Est. Load on Circuit: ±10% full scale ±1 digit Ground Impedance: ±2.5% full scale ±1 digit (0-1 Ohm)
±5.0% full scale ±1 digit (1-2 Ohm) GFCI Trip Time: ±2.5 full scale ±1 digit
Front Panel Indicators
Test Procedures Pass/Fail Indication
The ST-1D checks receptacles for proper wiring, and give a pass/fail indica­tion of voltage drop and line voltage. These tests are performed immediately upon insertion of the SureTest into the receptacle.
Wiring Verification
The ST-1D checks receptacle wiring for the following conditions: Correct wiring, no ground, polarity reversed, no hot, or no neutral or hot and
ground reversed. These conditions are indicated on the wiring indicators.
Insert the ST-1D into the receptacle for indication of the wiring condition.
WARNING
An indication of No Ground on the wiring indicators indicates a safety hazard is present. Defective grounds must be repaired prior to the GFCI test.
The ST-1D will not indicate a reversal of the ground and neutral connections, detect two hot connections, or indicate simultaneous defects.
Wiring Indicators Ground Impedance Indicators Ground-to-Neutral Indicators G.F.C.I. Test Button LED Display
1
2
3
4
5
1 2 3 4 5
3
V o l t
D r o p
®
SureTest
Circuit Analyzer
Wiring Indicators
L
P
A
S
I
Y
D
A
E
D
C
V
N
A
61-152 ST-1D
1 = Line Voltage 2 = % Voltage Drop 15 AMP 3 = % Voltage Drop 20 AMP 4 = Highest Voltage Gnd./Neutral 5 = Load on line ± 10%
6 = Ground Impedance in Ohms (Hold button insert Sure Test)
GFCI Test. Hold Button 3 Sec.
L n
V o l t
FG = False Ground
WIRING INDICATIONS
NORMAL NO GROUND POLARITY REVERSED NO HOT NO NEUTRAL or HOT/GROUND REVERSED
OFF
ON
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Voltage Drop Testing
The ST-1D checks the voltage drop of a receptacle under a full 15 ampere load without interruption to equipment on the circuit. The voltage drop LEDs, located on the left side of the instrument, will indicate a pass/fail con­dition based on the maximum voltage drop for branch circuits recommend­ed by the National Electrical Code for reasonable efficiency. (NEC article 210-19. FPN 4)
1. Insert the ST-1D into the receptacle
Green confirms that a full 15 ampere load causes less than a 5% voltage drop
Amber indicates that the voltage drop in the circuit is greater than 5% under a full 15 ampere load
Line Voltage Testing
The St-1D checks line voltage of the receptacle to ensure that it is within 10% of the nominal line voltage. For the 120VAC version, #61-152, the line voltage should be between 108 and 132 volts. For the 230VAC version, #61-153, the line voltage should be between 207 and 253 volts.
1. Insert the ST-1D into the receptacle
Green confirms that the line voltage is within 10%
Red indicates that the line voltage is beyond the specified 10%
tolerance
NOTE: A failure of the line voltage test will force a failure of the voltage drop test.
Electrical Measurements
In addition to pass fail/indication of key wiring and electrical test parame­ters, the ST-1D will measure key electrical values such as line voltage, volt­age drop under 15 and 20 ampere loads, ground-to-neutral voltage, esti­mated load and ground impedance. These measurements are accessed through a simple programming menu.
Unless a false ground condition exists, the ST-1D will show "L-n"- in the LED display, located on the bottom of the instrument. This indicates that the unit is calibrating itself prior to testing. After this calibration is per­formed, the ST-1D automatically enters into the programming menu. The LED display cycles between the numerical sequence of the test, and the measurement every four seconds. Press and hold the display advance but­ton for 1 second to move through the menu to the next test.
1. Insert the ST-1D into the receptacle
2. The LED display will show "L-n"- to indicate self-calibration of the unit
3. The LED display will show 1= to indicate that the first measurement is being taken.
4. The first measurement is tested and displayed
5. The LED display alternates between the numerical sequence of the test and the measurement every four seconds
6. Press and hold the display advance button for one second to move to the next test
The fifth measurement, estimated load, is the final test in the menu. Pressing and holding the display advance button will move back to line voltage, the first test in the menu.
Line Voltage Measurement
The line voltage test is indicated on the LED display by 1=. After four seconds the display cycles to the actual line voltage measurement. The LED display alternates between 1= and the line voltage measurement every four seconds.
Voltage Drop Measurement - 15 Amp Load
The voltage drop test at 15 Amps is indicated on the LED display by 2=”. This measurement is tested under a full 15 ampere load without interruption to equipment on the circuit. The National Electrical Code recommends 5% as the maximum voltage drop for branch circuits for reasonable efficiency. (NEC article 210-19. FPN 4)
Voltage Drop Measurement - 20 Amp Load
The voltage drop test at 20 Amps is indicated on the LED display by 3=”. This measurement is calculated from a 15 ampere load.
Ground-to-Neutral Voltage Measurement
The ground-to-neutral voltage test is indicated on the LED display by 4=”. Ground-to-neutral voltage results from current flowing in the neutral con­ductor from other equipment on the circuit. High ground-to-neutral voltage indicates that the circuit may be loaded near its capacity or the neutral con­ductor may be shared or carrying harmonic distortion. A reading of less than 2 volts usually indicates a usable outlet. An excessive ground-to-neu­tral voltage may result in inconsistent or intermittent equipment perfor­mance. This is a peak reading, which will be reset by pressing the display advance button, and cycling through the menu until the LED display shows 4= again.
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