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ST-21A Digital Insulation Tester

In Australia Phone: (03) 9023 0189

International Phone: +613 9023 0189

In Australia Fax: (03) 9700 0583

International Fax: +613 9700 0583

General Enquiry: info@telecomtest.com.au

Accounts: accounts@telecomtest.com.au

To contact us:

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ST-21A Digital Insulation Tester is a portable, hand-held, battery powered tester used for testing the integrity of cables. Operation is simple and clear. It employs standard wire tests that are carried out quickly, the results of which are stored for easy review.
The design and production of this instrument is based on abundant knowledge and experience of many years of electric equipment testing.

 

Digital Insulation Tester ST-21A - Functions:

· Insulation resistance measurement;

· Continuity measurement by 200mA test current according to EN61557 standards;

· Continuity measurement by 7mA test current (continuous measurement);

 

AC/DC voltage and frequency measurement.

Digital Insulation Tester ST-21A - Features:

· Broad-range insulation resistance to test voltage (50 ～1000V DC);

· Tested object automatically discharged after completing measurement

· Polarity shift of automatic voltage testing in "continuity ±200mA"function;

· Used for continuity 7mA function for inductive tested object;

· Data Memory;

 

LCD displays the result easy for reading. The operation is simple and clear.

Digital Insulation Tester ST-21A - Technical parameters:

Insulation resistance
Testing voltage: 50/100/250/500/1000V
Resistance range: 0—20GΩ
Resolution: 0.001;0.01;0.1;1;10MΩ
Accuracy: ± (5%+0.003M) (0—199.9MΩ)
Testing current: >1mA
AC/DC voltage:
Range: 0—600V
Accuracy :±( reading 3%+3v)
Frequency range: 45—65Hz and DC
Test of 200mA testing current continuity
Display range: 0.00---2000Ω
Resolution: 0.01; 0.1; 1Ω
Accuracy: ± (reading 2%+2D)
Automatic polarity shift: yes
Continuity test
Display range: 0.00---2000Ω
Resolution: 0.01; 0.1; 1Ω
Accuracy :±( reading 5%+2D)
Short testing current: <7mA

 

Digital Insulation Tester ST-21A - Other Features:

Power supply: 4×1.5V AA battery with automatic turn-off
Display: LCD display with backlight
Memory function: stores 1000 testing results
PC connector: RS-232
Dimensions: 252×142×62mm
Weight: 1.7kg
Protection grade: double insulation protection IP54
Working temperature: -10—+50℃ 85%RH

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