KLEIN TOOLS ET250 Digital AC and DC Voltage and Continuity Tester Instruction Manual

KLEIN TOOLS ET250 Digital AC and DC Voltage and Continuity Tester

Product Information

Specifications

• Model: ET250
• Voltage Measurement Range: AC/DC up to 600V
• Continuity Test
• GFCI Circuit Test
• Backlight and Worklight for reduced ambient lighting conditions
• CAT IV 600V Safety Rating
• IP53 Rating (protected against dust and water sprays up to 60 degrees from vertical)

Product Usage Instructions

Step 1: Safety Precautions
Before using the ET250 Digital AC/DC Voltage & Continuity Tester, it is important to follow these safety precautions to ensure safe operation:

• Read and understand all instructions provided in the user manual.
• Failure to follow the safety precautions may result in serious injury or death.

Step 2: Connecting Test Leads
To measure voltage or test continuity, follow these steps:

1. Ensure the tester is turned off.
2. Connect the test leads to the appropriate terminals on the tester:
   • + (Positive) Lead: Insert into the positive terminal.
   • COM Lead: Insert into the common terminal.
3. Make sure the connections are secure.

Step 3: Voltage Measurement
To measure AC or DC voltage, follow these steps:

1. Turn on the tester by pressing the power button.
2. Select the desired voltage range using the function buttons.
3. Place the test leads across the circuit or component being measured.
4. Read the voltage value displayed on the LCD screen.

Step 4: Continuity Test
To test for continuity, follow these steps:

1. Turn on the tester by pressing the power button.
2. Select the continuity test mode using the function buttons.
3. Place the test leads across the circuit or component being tested.
4. If continuity is detected, an audible indicator will sound and the display will show a continuity symbol.

Step 5: GFCI Circuit Test
To test GFCI-protected circuits, follow these steps:

1. Turn on the tester by pressing the power button.
2. Select the GFCI test mode using the function buttons.
3. Connect the test leads to the GFCI outlet or circuit being tested.
4. The tester will indicate whether the GFCI device is functioning appropriately.

Step 6: Additional Features
The ET250 Digital AC/DC Voltage & Continuity Tester includes a backlight and worklight for working in reduced ambient lighting conditions. Simply press the corresponding buttons to activate these features.

FAQ (Frequently Asked Questions)

• Q: What is the maximum voltage range this tester can measure?
  A: The ET250 can measure AC/DC voltages up to 600V.

• Q: What is the IP53 rating of this tester?
  A: The ET250 has an IP53 rating, which means it is protected against dust and water sprays up to 60 degrees from vertical.

• Q: Can I use this tester to measure continuity in an active circuit?
  A: No, it is not recommended to measure continuity in an active circuit. Ensure the circuit is de-energized before performing continuity tests.

• Q: How can I contact Klein Tools customer service?
  A: You can contact Klein Tools customer service at 1-800-553-4676 or via email at customerservice@kleintools.com. More information is available on their website: www.kleintools.com.

GENERAL SPECIFICATIONS

Klein Tools ET250 is a solid-state, digital voltage and continuity tester. It measures AC/DC voltages up to 600V and tests for continuity. Additionally, the ET250 tests GFCI protected circuits to verify that the GFCI device is functioning appropriately. The tester includes a backlight and worklight for working in reduced ambient lighting conditions.

• Operating Altitude: ≤ 6562 ft. (2000 m)
• Relative Humidity: <80% non-condensing
• Operating Temperature: 5°F to 113°F (-15°C to 45°C)
• Storage Temperature: -4°F to 140°F (-20°C to 60°C)
• Battery Type: 3 x 1.5V AAA
• Dimensions: 6.06″ x 2.33″ x 1.64″ (153.8 x 59.2 x 41.6 mm)
• Weight: 6 oz (170 g) without test leads
• Calibration: Accurate for one year
• Standards:
  • Conforms to EN61326-1:2013, EN61326-2:2013, UL STD. 61010-1, 61010-2-030 and 61010-2-033.
  • Certified to CSA STD. C22.2 NO. 61010-1, 61010-2-030 and 61010-2-033
• Pollution degree: 2
• Drop Protection: 9.8 ft. (3m)
• Ingress Protection: IP53 (see WARNINGS)
• Safety Rating: CAT IV 600V, Class 2, Double insulation
  • CAT IV: Measurement category IV applies to testing and measuring circuits connected at the source of the building’s low-voltage MAINS installation.
• Electromagnetic Environment: IEC EN61326-1:2013. This equipment meets requirements for use in basic and controlled electromagnetic environments like residential properties, business premises, and light-industrial locations.

Specifications are subject to change.

ELECTRICAL SPECIFICATIONS

• AC Voltage Range: 2 – 600V AC RMS (45 – 400Hz)
• DC Voltage Range: 2 – 600V DC
• Maximum Measurable Voltage: 600V RMS
• Resolution: 1V
• Accuracy: ±(2% + 2V)
• Test Current: < 0.3mA at 120V AC RMS or 120V DC
• Continuity: 0 – 270kΩ
• GFCI Test: >6mA via button
• Nominal Voltage GFCI Testing: 10-135V AC at 50/60Hz in 3-wire outlet
• Auto-Detect: Tester auto-detects and selects VAC / VDC / Continuity modes

Specifications are subject to change.

WARNINGS
To ensure the safe operation and service of the tester, follow these instructions. Failure to observe these warnings can result in severe injury or death.

• Before each use verify tester operation by measuring a known voltage.
• Never use the tester on a circuit with voltages that exceed the category-based rating of this tester.
• Do not use the tester during electrical storms or in wet weather.
• Do not use the tester or test leads if they appear to be damaged.
• Replacement test leads should conform to EN 61010-031 and be rated CAT IV 600V, 10A, or better. Do not use lower-rated test leads.
• Ensure tester leads are fully seated, and keep fingers behind the finger guards and away from the metal probe contacts when making measurements.
• Use caution when working with voltages above 25V AC RMS or 60V DC. Such voltages pose a shock hazard.
• To avoid false readings that could lead to electric shock, replace batteries when a low battery indicator appears.
• Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
• The tester is IP53 dust & water-resistant. Following any contact with water, thoroughly dry the tester and test lead jacks before subsequent use.

FEATURE DETAILS

NOTE: There are no user-serviceable parts inside tester.

1. Test Lead Holders
2. Backlit LCD Display
3. Power-On/Off Button
4. Worklight Button
5. Backlight Button
6. GFCI Test Button
7. Test Lead Jacks (bottom of tester)

SYMBOLS

SYMBOLS ON TESTER

SYMBOLS ON LCD

FUNCTION BUTTONS

• POWER-ON/OFF: Press the On/Off button to turn the tester on or off. The tester will automatically power-ON if test leads are applied to a circuit and it detects voltage >12V. The tester will automatically power OFF following 15 minutes of inactivity to conserve battery life.
• BACKLIGHT: Press the Backlight button to turn on/off the backlight. The backlight will automatically power off after 3 minutes of inactivity to conserve battery life.
• WORKLIGHT: Press the Worklight button to turn on/off the worklight. The worklight will remain on until turned off or the tester powers off.
• GFCI TEST: Press to perform a GFCI test. See OPERATING INSTRUCTIONS for details.

OPERATING INSTRUCTIONS

CONNECTING TEST LEADS

USE PROPER SAFETY-RATED TEST LEADS
Connect test leads by inserting the black lead into the “COM” jack and the red lead into the “+” jack. Do not test if leads are improperly seated. Results could cause intermittent display readings. To ensure proper connection, firmly press leads into the input jack completely.

TESTING IN CAT III/CAT IV MEASUREMENT LOCATIONS
Ensure the test lead shield is pressed firmly in place. Failure to use the CAT III / CAT IV shield increases arc-flash risk.

TESTING IN CAT II MEASUREMENT LOCATIONS
CAT III/CAT IV shields may be removed for CAT II locations. This will allow testing on recessed conductors such as standard wall outlets. Take care not to lose the shields.

AC/DC VOLTAGE (LESS THAN 600V)
Apply test leads to the system under test to measure voltage; the voltage measured will be reflected in the display. The tester will automatically detect the presence of AC or DC voltage and illuminate the appropriate icon in the display.

NOTE:
Test leads seated in the lead holders on the back of the tester are spaced correctly to test tamper-resistant US-style outlets.

CAUTION:
The maximum testing voltage is 600V. ‘OL’ will show in the display if a voltage above 600V is detected. No other warnings will be delivered for voltages above 600V. Testing voltages above 600V should not be attempted under any circumstances.

CONTINUITY
Remove power from the circuit. Test for continuity by applying test leads to the system being tested. The tester automatically enters continuity testing mode. If resistance < 270kΩ is detected, an audible signal will sound and the continuity icon “ ” will show in the display indicating continuity. If the circuit is open, “ ” will show in the display.

DO NOT attempt to measure continuity on a live circuit.

GFCI TESTING

CAUTION:
Check the GFCI Receptacle user manual for more information. Always contact a qualified electrician to resolve wiring problems. Operate the Test Button on the GFCI Receptacle. If the GFCI circuit does not trip, the receptacle is not operating properly.

CAUTION:
To resolve wiring or GFCI concerns, contact a qualified electrician.

To test the functionality of a receptacle protected by a Ground Fault Circuit Interrupter (GFCI), apply leads to the hot/live and ground terminals. Press the GFCI Test button on the ET250 tester.

• If the GFCI device is wired properly, the GFCI will trip and the circuit will become de-energized. The ET250 tester will stop indicating voltage.
• If the GFCI receptacle is incorrectly wired, the power to the circuit will remain and the ET250 will continue to indicate voltage. Contact a qualified electrician to resolve wiring problems.

NOTE:
The GFCI Test mode on this tester is deactivated in the presence of voltages > 135V.

MAINTENANCE

BATTERY REPLACEMENT
When the Low Battery indicator shows low battery strength ( ), batteries must be replaced.

1. Remove 2 screws from the battery door.
2. Replace 3 x 1.5V AAA batteries (note proper polarity).
3. Replace the battery door and fasten it securely with screws.

• To avoid the risk of electric shock, disconnect leads from any voltage source before removing the battery door.
• To avoid the risk of electric shock, do not operate the tester while the battery door is removed.

NOTE: There are no user-serviceable parts inside the tester.

CLEANING

Disconnect test leads. Clean the instrument by using a damp cloth. Do not use abrasive cleaners or solvents.

STORAGE

Do not be exposed to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the instrument to return to normal operating conditions before use.

FCC AND IC COMPLIANCE

• See this product’s page at www.kleintools.com for FCC compliance information.
• Canada ICES-003 (B) / NMB-003 (B)

WARRANTY

• www.kleintools.com/warranty.

DISPOSAL/RECYCLE
Do not place equipment and its accessories in the trash. Items must be properly disposed of under local regulations. Please see www.epa.gov/recycle. for additional information.

CUSTOMER SERVICE

KLEIN TOOLS, INC.

• 450 Bond Street Lincolnshire, IL 60069
• 1-800-553-4676
• customerservice@kleintools.com.
• www.kleintools.com.

References

• Reduce, Reuse, Recycle | US EPA

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