• Performance and accuracy testing of single-phase grounded or non-grounded instrument voltage transformers of 0.2 accuracy class (or less accurate) with 50-Hz frequency rated from 6 to 220/√3 kV. The Test Set is suitable for primary (post-manufacture) or regular testing of transformers in load points defined by the standard or under an actual load on the secondary side of the VT under test
  • Measurement of load power
  • Measurement of power quality parameters as defined by IEC 61000-4-30

Field of application

Accounting (billing) systems in electrical energy sector.

Console unit provides:

  • Protection of the equipment and safety of the work
  • All necessary connection and control facilities

MarsTest-VT-1 Transformer Test System consists of individual units connected to each other with power, measurement, control and high-voltage cables

High-Voltage Single-Phase Test Set for accuracy testing and calibration of Voltage Transformers with primary nominal voltage from 110/√3 kV to 220/√3 kV (phase) in the operating range from 40% to 120%.
Accuracy class:   0.1; 0.05
Purpose: Laboratory / On-site accuracy testing and calibration of single- phase instrument voltage transformers with primary nominal phase voltages 110/√3 kV; 220/√3 kV (other nominal voltages are subject to special order). 
Accuracy class of transformers under test: 0.2 (0.5), or less accurate
Scope of supply

1. Comparator: 
Option 1: Energomonitor 3.3T1 (for testing VTs of 0.5% accuracy) or 
Option 2: Energomonitor 3.1KM (for testing VTs of 0.2% accuracy)

2. Reference Device: Reference Capacitive High-Voltage Transducer of CHVT series* 
CHVT-110; CHVT-220 complete with UIN amplifiers

3. High Voltage Source
  • HV Source of test signals: 
    For VTs rated up to 110/√3 kV (phase): Mobile HV Source UIV-100/7.5M; Console Unit and Voltage regulation unit included; generated power - up to 7.5 kVA.
    For VTs rated up to 220/√3 kV (phase): Mobile HV Source UIV-150/18M; Console Unit and Voltage regulation unit included; generated power – up to 18 kVA.
4. Burden Boxes 100/√3 V, 200 VA (2 pcs)
5. Set of cables (power, control, measurement, grounding, corona-free etc.)
6. Personal Computer (Laptop), printer, software

* The customer can opt for the Reference Capacitive HV Transducer CHVT with the desired internal voltage measurement ranges (subject to special order)