Besantek BST-IT30 Bedienungsanleitung

HIGH VOLTAGE DIGITAL

INSULATION TESTER

BST-IT30

INSTRUCTION MANUAL

SAFETY PRECAUTION !

• Use only on de-energised system.

• Check test leads for defects.

• Always earth circuit under test.

• After testing, allow a few seconds for

instrument to discharge circuit under test.

OPERATING INSTRUCTIONS

1. Depress “ ON ”.

2. Insert leads into the instrument observing colour coding.

3. Clip BLACK lead to earth.

4. Select test voltage and follow display instructions.

CAUTION

5. Touch RED lead to conductor under test. Stop test

immediately if warning message and / or buzzer sound.

This indicates the presence of an external voltage which

must be remove.

Before proceeding, reset the tester by depress “ ON ”.

6. Connect RED lead to conductor and depress “ TEST ”.

( tests up to 99.9S )

7. Display shows test duration, real time bargraph voltage

indication and insulation resistance.

Index

1. Safety Precautions............................

2. Specications....................................

3. Instrument Layout..............................

4. Preparation for Measurement............

5. Functions...........................................

6. Insulation Testing...............................

7. Insulation Resistance Testing...........

8. Maintance and Cleaning Method.......

Page

1-2

3-4

7-8

-1-

1. Safety Precautions

Electricity can be dangerous - handle it with care.

Carefully read the following information before using

the tester.

1.1 The company will not accept liability for any damage

or injury caused by misuse or non-compliance with

instructions and safety procedures.

This instrument must be used and operated only by a

competent trained person and in strict accordance with the

instructions.

1.2 This instrument must not be used on live circuits. Ensure

all circuits are de-energised before testing. See paragraph

1.6 fomur details of built-in warning features should you be

connected to a live system.

1.3 Never open the tester except for battery replacement. (see

battery replacement section).

1.4 Before use, always inspect the tester and test leads for any

sign of abnormality or damage. If any abnormal conditions

exist (broken test leads, cracked case, display faulty etc...)

do not attempt to take any measurement or use the tester.

Return the tester to your nearest distributor for service.

1.5 No design can completely protect against incorrect use.

Exercise caution when using electricity.

However, the tester has been designed with your safety in

mind.

1.6 The tester has a live circuit warning beeper. If it is

connected to a live circuit of more than 500V, a rapid

pulsating beep will be heard and, in addition, the tester

will display a warning message.

Should this happen, DO NOT proceed to test and

immediately. Depress "Test" again to conrm. (hold

depressed the test button). If live warning presist,

disconnect the instrument from the circuit.

-2-

1.7 Rated enviroment conditions :

(1). Indoor use.

(2). Installation category II.

(3). Pollution degree 2.

(4). Altitude up to 2000 meter.

(5). Relative humidity 80% max.

(6). Ambient temperature 0~40°C.

1.8 Observe the international electrical symbols listed below.

Meter is protected throughout by double

insulation or reinforced insulation.

Warning ! Risk of electric shock.

Caution ! Refer to this manual before using the

meter.

-3-

2. Specications

2.1 Display

2 Lines x 20 characters large L.C.D.

Bar graph shows test voltage-rise and decay.

Test duration is indicated in seconds.

Warning of external voltage presence.

Auto-hold when test stopped and circuit discharged.

Low battery indication.

2.2 Insulation

Both models have four insulation test voltages and are

autoranging. They auto-discharge the circuit after test.

1- 500Vdc - 25000MΩ

2- 1000Vdc - 50000MΩ

3- 2500Vdc - 125000MΩ

4- 5000Vdc - 250000MΩ

Test voltage 500Vdc 1kVdc 2.5kVdc 5kVdc

Measuring 30GΩ 60GΩ 125GΩ 250GΩ

range Autoranging

Accuracy ±5%±2 digits

2.3 Supply

Power 8 x 1.5V "C" size alkaline battery

-4-

2.4 Control

Type CMOS Microprocessor

2.5 Analogue to digital conversion

Type Sucessive approximation

Low current (250uA typical)

Resolution 12 bits (no missing codes)

2.6 Keypad

Type Tactile menbrance switch.

2.7 Connections

Type Color coded sockets

SAFETY PRECAUTION !

• Use only on de-energised system.

• Check test leads for defects.

• Always earth circuit under test.

• After testing, allow a few seconds for

instrument to discharge circuit under test.

-5-

SAFETY PRECAUTION !

• Use only on de-energised system.

• Check test leads for defects.

• Always earth circuit under test.

• After testing, allow a few seconds for

instrument to discharge circuit under test.

OPERATING INSTRUCTIONS

1. Depress “ ON ”.

2. Insert leads into the instrument observing colour coding.

3. Clip BLACK lead to earth.

4. Select test voltage and follow display instructions.

CAUTION

5. Touch RED lead to conductor under test. Stop test

immediately if warning message and / or buzzer sound.

This indicates the presence of an external voltage which

must be remove.

Before proceeding, reset the tester by depress “ ON ”.

6. Connect RED lead to conductor and depress “ TEST ”.

( tests up to 99.9S )

7. Display shows test duration, real time bargraph voltage

indication and insulation resistance.

3. Instrument Layout

Test leads connections

Liquid

crystal

display

Voltage

selection

keys

Clear a fault,

start and stop

the test.

Go to main menu Switches "ON"

the instrument

Reset ( if depressed for less than one second )

switches "OFF" the instrument when depressed

for more than ve seconds.

-6-

4. Preparation for Measurement

Check the following for damages and status.

4.1 Display

Do not use the instrument if the display looks

abnormal.

4.2 Keypad

Visually check the keypad.

A damaged keypad will cause the instrument to

malfunction.

4.3 Test leads

Verify test leads are free of cracks and check

continuity.

Faulty test leads will cause inaccurate readings.

4.4 Batteries

The instrument will operates optimally with

alkaline batteries.

-7-

5. Functions

5.1 Switching "ON"

Switch "ON", by depressing the "ON"

key.

Depressing the "ON" key

will start the instrument,

giving the manufacturer's

name, type of instrument

and part number.

The instrument will deafault

to the selection menu.

6210 IN

..500v to 5kV..

...Insulation...

......Tester......

Select test

5KV, 2.5KV, 1KV, 500V

5.2 Re-starting or resetting the instrument

To re-start or reset the instrument,

depress "OFF" key for not more than

one second, then release it.

5.3 Switching "OFF"

Depress "OFF" key for more than

ve seconds to switch "OFF" the

Instrument.

-8-

5.4 Initialising-starting the test

● Quick test

A quick test ( less than 15 sec )

is done by depressing "TEST" for

less than two seconds.

● Long test

A long test ( up to 99.9 sec ) is

done by depressing "TEST" for

more than three seconds.

5.5 Stopping the test

The test can be stopped at any

time by depressing "TEST" key.

The instrument will then auto-

discharge the circuit and hold the

last stable reading.

Voltage decay can be observed on

the bargraph.

5.6 Main menu-new test-new selection

After termination of a test, the

main menu can be accessed by

depressing the "TEST" key. The

instrument will then display the

voltage selection menu and a new

test can be started.

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