This set includes Bridge Model:MLS11DS & HV Power Supply model :HLS12SA necessary cables & very flexible, user friendly.Temp correction for the tan delta of object is automatically done as per IEC.Suitable for measuring C & Tan delta for generators, transformers, bushings, circuit breakers,cables, motors at various test voltages upto 12kV.


  • 1. Direct reading No calculation required

  • 2. Indication of Test Voltage / Leakage Current / Capacitance Value / Tan delta value Temperature and Humidity.

  • 3. Data logging with graph of voltage vs Tan to know the tandelta gradient & data analysis for comparison with old results / manufacturer's data in PC Side Software

  • 4. As per IEC Temperature correction for Tandelta @ 20Deg.

  • 5. Executes all the test modes/voltage automatically once fed .

  • 6. Built in Thermal Printer for ON site printout.

  • 7. Interference suppression unit provided to work in switchyard under heavy induction.

  • 8. 100 Results Data-storage.

  • 9. Built in Temperature and Humidity.

  • 10. Mode of operation:
    • 1) UST - Ungrounded Specimen test - This mode is used when the object under test is not grounded. This testprovides most accurate results.

    • 2) GST - Grounded Specimen test. This mode is used when the object under test is permanently grounded.

    • 3) GSTg - Grounded specimen test with guard. 3 combinations. This mode is used for measuring them stray capacitances and separating them from basic measurement in GST mode.

Measurements : The system will provide following Information.
PARAMETER RANGE RESOLUTION ACCURACY
CAPACITANCE 1pF to 1.1mfd 0.01pF ±0.2% of the reading
±1 pF in UST Mode
TAN DELTA 0 % – 100% 0.001%(0.00001) ± 1% of the reading ± 0.0002
VOLTAGE Measurement 100V –12 KV 1.0V ±1% of reading
±1digit
CURRENT Measurement 0 –200 mA 1mA ±1 %, ±1digit
POWER FACTOR 0-1 0.01%(0.0001) ±0.1% of the reading ±0.0002
POWER INPUT 230 Volts±10%,50Hz . Single phase.
POWER OUTPUT 0-12KV , 200mA
Temp. Correction IEC Temperature Correction for Tan Delta Values.
DATA STORAGE More than 100 results storage memory.
INDICATION Large 4 line LCD.
INTERFACE RS232 PORT,
KEY BOARD Multikey, alphanumeric Keypad.
SOFTWARE PC side Windows based analysis software for downloaded data from Instrument.
OTHER PARAMETERS Apparent Power, True Power, Reactive Power available pc side report.
IN BUILT STD CAPACITOR SF6 Capacitance- 100pF ± 0.5%, Tan d< 1 x10-4
RESONATING INDUCTOR Optional useful to increase the current rating suitable to measure 1.1 mFd@ 12KV by expanding current capcity upto 2Amp if requested.
PROTECTIONS Zero Start, Interlocks, Open Ground, Over Current, Over Voltage,Over Temperature, Foot switch for HV ON.
CABLES HV Cable – 20 M length,12KV ,Double screened with hooks & clamps. LV Cable – 20 M length, screened cable, with hooks & clamps.-2Nos. Grounding Cable – 20M & 10M length with clips –2Nos. Footswitch – Footswitch with 5 Meter length cable. Interconnecting Cables, Mains chord, PC& Printer Cable.
CALIBRATOR BOX With one Capacitance & 3 Tan Delta values.Test Voltage 3KV.
CARRING CASES Suitable foam padded carring cases for Bridge & Power Supply.Carrying Bag for Cables
TEMP & HUMIDITY 10° C – 50° C with HUMIDITY : 30% Rh -90% Rh.
DIMENSIONS Power Supply : 540mm X 350mm X310mm Bridge : 540mm X 350mm X220mm
WEIGHT Less than 50kg without Leads.

Semi Automatic C & Tan delta Bridge Model : MLS-11DS & HLS-12SA

Semi Automatic capacitance and tan delta bridge