Measurement Guide
3159
INSULATION/
WITHSTANDING
HiTESTER
August 2014 Revised edition 1 3159A985-01 14-08H
The Model 3159 Insulation/Withstanding HiTester is a hazardous instrume nt t hat generates high voltage.
For safe use, please read the “Introduct io n, ” “I nspection,” “Safety Notes,” and “Notes o n Use” in the 3159
Instruction Manual.
This document provides, as an example, a simple method for t est ing 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. (I nsul at ion 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.
Please 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
electric shock.
Set the test voltage.
Check and record the test results.
Clean up after turning off the power.
If you accidentally set t he wrong set tings w h ile che c king th e op eratio ns, turn o n the main pow er sw itc h
while holding down the S HIFT key to reset the system (return t o i nitial state).
2
A
1. Preparation
(1) Before starting a test using the 3159,
check the following information regarding
Electric-proof rubber sheet
Model 3159 Insulation/Withstanding 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 w it h t est leads
Electric appliance
Short-circuited rec ept acle
(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 applianc e t o 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 wi r e or ot her non-i nsulated 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 pl ug pins as shown
in the figure. Wind the wire aroun d t he pins 5 or 6 times.
Wind the wire t i ghtly to ensure s hor t -circuiting.
Wind the wire b e i ng careful not to b end the part of
the plug indicate d by (A).
3. Check:
Conduct a final check to ma ke sure that the wire is wound
<Example>
(Short-circuited plug)
tightly around the plug pin s.
* Alternatively, use a recept acl e, w hich is custom-made for the test, w it h t he two leads short-circuited as
shown in the “Example test setup” abov e.
2. Simple Startup Inspection (Connection)
During startu p i nsp ecti on, the operator intentional ly applies electric current to check
whether the 3159 and the test leads are functioning properly.
Wear high-voltage rubber gloves when connecting the lead wires.
Connect the test leads securely so that they do not disconnect during the test,
Do not place the test leads directly on the ground or floor during the test. Do not
bring them into contact with any metal products in the vicinity.
3
(1)
(2)
(3)
Check that the power switch of the 3159 is
turned off and the output voltage knob is in the
zero position.
Connect the power cord (supplied with the
3159) to the inlet of the main unit and a
grounded outlet .
Always properly ground the 3159 in order
to prevent electric shocks.
Tightly at tach the supplied l ow-voltage test
lead (black) to the LOW terminal (black).
Insert the supplied high-voltage test lead (red)
to the HIGH terminal (red) all the way so that it
is firmly seated.
(4)
Short-circuit the high-voltage test lead
(red) and low-voltage t est lead (black) as
shown in the picture.
Place the connected test leads on a board
made of refractory insulated materia l, such as
an electric-proof rubber sheet .
4
A
(1)
(2)
3. Simple Startup Inspection (Settings)
Check that no one is nea r the testi ng area,
and turn on the main power switch of the 3159.
Press the
lights up.
Check that the analog voltmeter indicates
that the lamp does
.
up
key and check that the lamp
0 kV
not light
and
(3)
Check that
is displayed on the screen.
Take due care when the 3159 enters the READY state in which testing can start.
(4) Set the parameters as follows:
Parameter Comparative-voltage Upper limit for test Lower limit for test Test time Range
Value OFF
10 mA
OFF
70.0 seconds 2.5 kV
(5)
Before setting
fter setting
Range
Range
Comparative-voltage
Comparative-voltage
Test upper limit Test time
Test upper limit
Test time
Use the and keys to select range.
The selected
be edited.
Use the
(Only the test upper limit and the test time are set here. Leave
the comparative-voltage and lower limit set to OFF.)
item blinks
and
, which indicates that it can
keys to edit
each
(6)
Press the STOP (EX IT) key to confirm the test
conditions. The 3159 enters the READY state.
(The figure on the left shows the 3159 when the test
conditions have been confirmed.)
Set the test voltage using the output voltage knob after starting the test.
5
(1)
(2)
4. Simple Startup Inspection (Check)
Wear high-voltage rubber gloves when connecting the lead wires.
Press the START key to start the test.
When a test is started, h i gh voltage is generated by
the 3159 when it enters the state.
Do not touch the output voltage HIGH terminal (red)
or the test lead while the lamp is
illuminated.
Turn the output voltage knob clockwise during
the (70 second) test.
During the inspection, you do not need to adjust
the voltage accurately. As a general guide, turn
the knob about a quarter turn.
(3) Inspection Result
Normal:
Abnormal: will be displayed on the screen. (Perform steps (4) and (5), then follow the instruction
* Check the test lead connection s (insert ion/tigh ten ing) and test again. If the res ult is still “PASS,” a test lead may be
(4)
The 3159 will beep and will be displayed on the screen.
below.)
damaged or the 3159 may be malfunctioning. Please contact your authorized Hioki distributor or reseller.
Press the STOP (EX IT) key to cancel the hold st at e.
(5)
Turn the output voltage knob all the way
counter-clockwise, returning it t o zero. Turn the
main power switch of the 3159 off.
(6)
Disconnect the test leads (short - circuited part).
The startup inspect ion is now complete.
6
5. Preparation Before the Test
(1)
(2)
Enlarged
Wear high-voltage rubber gloves when connecting the lead wires.
Connect the test leads securely so that they do not disconnect
during the test.
Turn on the power switch of the electrical
appliance while power is not supplied to
Switch ON
the electrical appliance.
You cannot t ake accurate measurements if the
power switch of the electrical appliance is turned of f.
Connect the low-voltage test lead (black) to the
test point on the electrica l appliance (surface of
the body of the appliance, ground t erminal, or
other test point).
(3)
Check that no one is nea r the testi ng area and turn on the main power to t he 3159.
(4)
(5)
Connect the high-voltage test lead (red) to the test
point on the electrical appliance (the short-circuited
part of the plug or the short- circuit ed leads of the
receptacle that is connected to the plug).
Check that the analog voltmeter is indicating
and that the
illuminated
.
(6)
Measured voltage value Test timeLeakage current value
lamp is
0 kV
not
Set the three parameters ment ioned in “1. Preparation”: Test voltage, Reference leakage current
value (upper limit for the test), and T est ti me. Refer to “3. Simple Startup Inspection (Settings).”
Set the test voltage aft er starting the test (while ch ec king the m easured v o lt age v alue).
7
p
Set the test voltage a f t er pressing the START key to start the test .
Check the values to be usedbefore
6. Start the Test
ressing the START key.
When a test is started, hi gh volt age i s generated by the 3159 when it enters the state.
Do not touch the output volt age HIG H terminal (red), test l eads, electrical applia nce (device to
be tested), or short-circuited receptacle while the lamp is illuminated.
(1)
Press the START key to start the test.
To forcibly terminate the test process,
press the STOP (EXIT) key.
(2)
Measured voltage value Leakage current value Remaining time
The test requires the voltage to be applied for 60 seconds.
After pressing the START key, turn the output v oltage knob to set the volt age
to the test voltage before the remaining time reaches 60 seco nds.
Turning the output voltage knob excessively can raise the
voltage over the test voltage, resulting in damage to the
electrical appliance.
To Set the Test Voltage
To set the test voltage, turn the output voltage knob while checking the
measured voltag e value.
It may take time to get used to setting the test voltage.
8
pp
)
7. Finish the Test
(1) When the resu lt is “PASS”
Measured voltage value
Leakage current value
Remaining time
A "PASS" judgment will be given if the electric appliance withstands t he t est voltage for the set
test time. (“PASS” will be displayed for approximately 0.5 seconds by default; how ever the
“PASS” indication can b e retained. See “4.1 PASS Hold Function” in the 3159 instruction
manual.)
Record the result as PASS in the record form or o ther documents.
(2) When the resu lt is “FAIL”
An "UPPER FAIL" judg ment will be given and t he 3159 will beep if the electric
a
liance fails to withstand the test vo ltage for the set test time.
Record the result as FAIL in the record form or other documen t s .
(If the measured voltage value, leakage current value, and remaining time are also
necessary, record them as well.)
Measured voltage value Remaining timeLeakage current value
(3) If the FAIL Hold function is enabled, press the STOP (EXIT) key to cancel the hold state.
<After the test>
(1)
Return the output volt age knob to zero. (Turn t he knob
all the way counter-clockwise
(2)
Check that the analog voltmeter indicates
the
lamp is
not illuminated
0 kV
and that
.
(3) Turn the main power switch of the 3159 off.
To conduct further tests, start from “5. Preparation Before the Test” of this measurement guide.
(4) Disconnect the electrical appliance, test leads, and power cord in the reverse order of
connection.
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