Hioki 3159 User Manual

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Measurement Guide

3159

INSULATION/

WITHSTANDING

HiTESTER

August 2014 Revised edition 1 3159A985-01 14-08H

The Model 3159 Insulation/Withstanding HiTester is a hazardous instrument that generates high voltage.

For safe use, please read the “Introduction,” “Inspection,” “Safety Notes,” and “Notes on Use” in the 3159

Instruction Manual.

This document provides, as an example, a simple method for testing withstanding voltage of electrical

appliances by using the Model 3159 Insulation/Withstanding HiTester. For details on how to use the 3159,

refer to the 3159 Instruction Manual. (Insulation resistance tests can also be performed with the 3159.)

Symbols and Notations Used in this Manual

···· Indicates that incorrect operation presents an extreme hazard that could result in serious

injury or death of the user.

···· Indicates that incorrect operation presents a possibility of injury to the user or damage to the

instrument.

1

The Model 3159 Insulation/Withstanding HiTester is a hazardous instrument that

generates high voltage. Please use due caution when handing the 3159. To prevent

electric shock, wear high-voltage rubber gloves and electric-proof rubber boots, and

put an electric-proof rubber sheet on the work surface.

Pleas

e read this manual thoroughly to ensure safe testing.

Measurement procedure with the 3159 (This flowchart shows the procedure for using the 3159.)

1. Preparation

Check that you have the necessary tools for
the test.

2. Simple Startup
Inspection
(From connection

Perform a simple startup inspection for safe
testing.

to check)

Prepare for withstanding voltage test.

3. Preparation
Before the Test

(Connect the electrical appliance and set the
test conditions)

Start the test, taking measures to prevent

4. Start the Test

5. Finish the Test

If you accidentally set the wrong settings while checking the operations, turn on the main power switch

while holding down the SHIFT key to reset the system (return to initial state).

electric shock.
Set the test voltage.

Check and record the test results.
Clean up after turning off the power.

2

A

1. Preparation

(1) Before starting a test using the 3159,

check the following information regarding

Electric-proof rubber sheet

Model 3159 Insulation/W ithstanding HiTester

the electrical appliance to be tested.

1. Test voltage

2. Reference leakage current value

(upper limit for the test)

3. Test time

4. Test points

Points to connect with test leads

Electric appliance

Short-circuited receptacle

(Example test setup)

High-voltage rubber gloves

Do not perform tests in
locations that are:

• exposed to direct sunlight

• poorly ventilated

• subject to frequent mechanical vibrations

• near flammable objects

(red, black) of the 3159

* This measurement guide explains the procedure based on an example using the following settings.

(Sample settings: Parameters and Values)

Parameter Test voltage Reference leakage current value Test time

Value 1000 V 10 mA 60 seconds

(2) Things to prepare:

1. Model 3159 Insulation/Withstanding HiTester

2. Electrical appliance to be tested

3. Rubber gloves for protection from high voltages (for safe testing)

4. Forms or a computer to record test results

5. Conductive wire (tinned wire or other non-insulated wire)

 This wire is used to short-circuit the plug pins.

See figure below for details.

Short-circuit the plug pins with the conductive wire by following these steps.

1. Prepare a conductive wire.

2. Wind the wire tightly around the plug pins as shown

in the figure. Wind the wire around the pins 5 or 6 times.

Wind the wire tightly to ensure short-circuiting.

Wind the wire being careful not to bend the part of

the plug indicated by (A).

3. Check:

Conduct a final check to make sure that the wire is wound

<Example>

(Short-circuited plug)

tightly around the plug pins.

* Alternatively, use a receptacle, which is custom-made for the test, with the two leads short-circuited as

shown in the “Example test setup” above.