Triplett ET400 User Manual

Introduction

Congratulations on your purchase of the Triplett ET400 Non-Contact AC Voltage Detector and Phase Sequence Indicator. This meter is used to quickly determine the presence of AC Voltage and ensure the correct phase wiring sequence. It features high and low sensitivity ranges, audible and visual indicators, and a built-in flashlight.

Meter Description

The Triplett ET400 includes the following components:

• 1. Battery Cover (Screw On)
• 2. Flashlight Button
• 3. MODE Select Button
• 4. Power ON/OFF Button
• 5. LED Indicators
• 6. Detector Tip (Sensor)
• 7. Zoom In/Out Button
• 8. Flashlight

Diagrams show the device from different angles, illustrating the location of these components.

Safety Information

Caution! Refer to the explanation in this Manual. The device has Double Insulation or Reinforced insulation.

CE Compliance: This device must not be handled by children. It contains hazardous objects as well as small parts that can be swallowed. Do not leave batteries and packing material unattended; they can be dangerous for children. If unused for an extended period of time, remove the batteries from this device. Expired or damaged batteries can cause cauterization on contact with the skin; use suitable hand gloves in such cases. Ensure that the batteries are not short-circuited. Do not throw batteries into the fire.

WARNINGS:

• Read and follow safety rules and operating instructions in the manual before using this tester.
• The tester's safety features may not protect the user if not used in accordance with the manufacturer's instructions.
• Check on a known live source within the rated AC voltage range of the tester before use to ensure it is in working order.
• Insulation type and thickness, distance from the voltage source, shielded wires, and other factors may affect reliable operation. Use other methods to verify live voltage, if there is any uncertainty.
• Do not use if the tester appears damaged or if it is not operating properly. If in doubt, replace the tester.
• Do not use on voltages that are higher than marked on the tester.
• Use caution with voltages above 30 volts AC as a shock hazard may exist.
• Comply with all applicable safety codes. Use approved personal protective equipment when working near live electrical circuits.

Operation

Power ON/OFF Button

• Press the tester ON/OFF Button once; the tester will beep once, and the green LED and work light will illuminate, indicating the tester is working on high voltage mode and ready for use.
• Press the ON/OFF Button one more time; the tester will beep twice, and the range LED will turn off.

Mode Select Function

• When the tester is on with NCV function, short press the M Button once; the green LED turns off and the yellow LED illuminates, indicating the tester is working on low voltage mode.
• Short press M Button again; the green and yellow LEDs flash slowly alternately, indicating the tester is working on phase sequence test mode.
• Short press M Button again; the yellow LED turns off and the green LED illuminates, returning the tester to high voltage mode.
• The tester will beep once for every M Button operation.
• The M Button operation is valid only when the NCV function is turned on.

Verify Operation

• Before using the tester, ensure (1) the green LED is glowing and (2) check the tester on a known live AC voltage within the defined detection range.

High Voltage Mode (100 to 1000V AC)

• Place the tip of the tester near an AC voltage.
• If the tester detects voltage within the defined detection range, the green LED will turn off, the red LED will turn on, and the beeper will beep rapidly.

Low Voltage Mode (12 to 1000V AC)

• Place the tip of the tester near an AC voltage. When AC voltage is detected, the yellow LED will turn off, the red LED will flash, and the beeper will beep.
• The flash rate and beeping rate increase as the tester gets closer to the voltage source.
• If the tester detects high voltage, it will automatically change to high voltage mode: the red LED will change to a steady glow and the beeper will beep rapidly.
• Note: An indication occurs when the tester is used to detect AC to DC power supply, for example, a phone USB cable/line being charged by a socket.
• Note: The tester cannot determine the actual voltage. The voltage level at which the tester switches from low to high voltage mode is affected by insulation type and thickness, distance from the voltage source, and other factors.

Phase Sequence Test Mode

• Place the tip of the tester close to the L1 phase wire; the tester will beep once, and the green and yellow LEDs will flash rapidly alternately, indicating that the measurement of the first phase sequence is complete.
• Move the tip of the tester close to the L2 phase wire. When the measurement is complete, there will be two results:
1. The tester beeps and the green LED stays on for about 5 seconds, indicating Correct phase conformity (L2 is ahead of L1 by 120 degrees).
2. The tester beeps and the yellow LED stays on for about 5 seconds, indicating Incorrect phase conformity (L2 lags L1 by 120 degrees).
• Test L1 and L3, L2 and L3 in the same way.
• Note: To improve test accuracy, do not place the tester tip in the middle of the two-phase lines.

Auto Power Off

• To conserve battery life, the tester will automatically turn off after approximately 5 minutes of inactivity.
• When powering down, the tester will beep twice and the mode indication LED will turn off.

Flashlight

• Momentarily press the Flashlight button to turn the flashlight on or off.
• To conserve battery life, the flashlight will automatically turn off after approximately 5 minutes when the NCV function is off.
• The tester will beep twice as the flashlight auto power off.

Changing Batteries

1. Carefully unscrew the battery cap at the rear (flashlight end) of the tester.
2. Replace batteries with two AAA 1.5V batteries. Observe polarity. Carefully align the cover with the tester as shown below. Diagrams illustrate: End of the Tester, Cap with springs to align, Insert 2 AAA Batteries (+ first), Connect Battery Cap, aligning 2 Springs to Contacts.
3. Screw the cover onto the tester until it feels tight. Do not use excessive force.
4. Verify operation by using the tester on a known live AC voltage within the defined detection range of the tester.

Note: When batteries are loaded for the first time, please remove the white, rectangular security strip before installing batteries.

Note: When replacing the batteries, be sure to secure the cap firmly to maintain IP67 water and dust protection. A loose or overtightened battery cap may compromise water and dust protection.

Specifications

Warranty

Triplett / Jewell Instruments extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of one (1) year from the date of purchase. This warranty does not apply to any of our products which have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident, or which have had the serial numbers altered, defaced, or removed. Accessories, including batteries, are not covered by this warranty.

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