Instrument Transformer Test Sets

Metrological Mobile Lab

Mobile Laboratory for testing current and voltage electronic (low-power) transformers
High-voltage metrological mobile lab rated at 6÷330 kV, 50 A ÷ 5 kA

Current Transformer Test Sets

CT testing sets up to 6 kA
Adjustable current source up to 6 kA
Reference current transformers
(accuraсy class 0.05)

Voltage Transformer Test Sets

High-voltage single-phase test set for voltage transformers up to 330 kV
High-voltage three-phase test set for voltage transformers up to 10 kV
(up to 35 kV)
Reference capacitive transducer for testing voltage transformers 6÷500 kV
(accuraсy class 0.05, 0.1)
Instrument-class High-voltage Capacitors (IHC)
Standard high-voltage air capacitors 6÷500 kV (accuraсy class 0.05, 0.1)
Instrument voltage transducer for testing VTs up to 500 kV (accuracy classes 0.05 and 0.1)

CT/VT Test Comparators

Portable precision comparator
Comparator for testing smart meters compatible with electronic transformers
High-precision comparator
Energomonitor 61850
Comparator for conventional and digital transformers
MarsComp K-1000
Current/voltage comparator for LPIT

Reference instruments for digital substations

Test equipment

Current transformer test set

In 2023, Mars-Energo successfully supplied a set of equipment for the calibration of electronic low-power voltage transformers (LPIT) to the Republic of Korea. The set included two essential components:

1) Capacitive High-Voltage Transducer CHVT-220, accuracy class 0.05 at 220 kV/√3

2) Dual-channel Voltage Comparator MarsComp K-1000, accuracy class 0.01

The end user of this equipment is the research center of Hyundai company.

The calibration of the capacitive high-voltage transducer was conducted at Korea Research Institute of Standards and Science (KRISS).

The calibration report confirms that all metrological characteristics of the high-voltage transducer impeccably align with the customer's stringent technical requirements.

In response to the customer's specific needs, Mars-Energo specialists carried out preparatory checks and calibration of an additional electronic unit for the capacitive high-voltage transducer.