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Insulation Resistance Analyzer DRT101

Insulation resistance analyzer DRT101 is a rugged test bench instrument for measuring high value of Insulation and pure resistances and helps in evaluating  Polarization index and conducting step voltage tests. The IR values and polarization index of transformer is recorded and when tallied with performance feedbacks of the transformers can help in quality assurance & control, Incoming inspection of any company would need one to help evaluating insulation cables, switches, relays connectors etc.

Megger or Insulation Tester

Test That Can be Carried Out With The DRT101
  1. 10 second resistance tests.
  2. 1 minute insulation resistance test.
  3. Polarization index evaluation.
  4. Step voltage tests.
  5. Greater than range, lesser than range, sorting (Meggar Mode).

A high resistance guarded specimen tray is provided with each instrument to carry out error free measurement.

Insulation Resistance Analyzer DRT101

In meggar mode specimens with resistance > or < 200 M ohm, 2 G ohm, 200 G ohm, 2 T ohm or at half and quarter range at 250 V, 500 V, 1000V can be sorted faster with the help of the buzzer sound.

Winding Insulation Resistance Measurement

Insulation resistance of cables of standard lengths can be done by conventional methods of guarding the cable. But using DRT101 directly to read the high resistance instead of a bridge.

Technical Specifications

Resistance ranges:

Mode A at 250V, 500V, 1000V.
200 M ohm, 2 G ohm, 20 G ohm, 200 G ohm, 2 T ohm.

Mode B at only 100V (10).100V range.
20 M ohm, 200 M ohm, 2 G ohm, 20 G ohm, 200 G ohm.

Mode C at only 1000 V (x 10).1000 V range.
2 G ohm, 20 G ohm, 200 G ohm, 2 T ohm, 20 T ohm:


200 M ohm, 2 G ohm, 20 G ohm, 200 G ohm --  +/- 1 %. +/- 1 digit.
2 T ohm -- +/-3% +/- 1 digit,
20 T ohm -- +/-5 % +/- 1 digit.

Test voltages: - 100V, 250V, 500V, 750V, 1000V, --  +/- 1%

All specification valid after 15 minutes warm up.

General Data
Power requirements :  220-240V AC, 50/60 Hz, +/- l%.
Power consumption :  20 VA max

Environmental operating range :  +7 deg C to +35 deg C, 20% to 35% RH.
Storage temperature :  -35 deg C to +65 deg C

Size :  12" W, 4" H, 9.2" D. -o- Weight :  2.2 kilograms

Quality Control

100 hr burn in for 3 cycles., Vibration tests, Voltage regulation tests, Overload tests.

Mains power cord. Teat lead set (black, red, BNC), High resistance guarded tray, Instruction manual

DACT Elektrootech

This is the catalog of a product i made and sold in the 80s.

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delabs Technologies

20th Mar 2020


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