Mobile digital transformer test lab

The MarsLab-61850 is equipped for performing a full range of test/calibration works of measuring equipment in both conventional and digital (IEC 61850-9-2) substations.

Scope of application

Accuracy testing and calibration of:
Electronic current transformers with IEC 61850-9-2 digital outputs rated at up to 5 kA
Electronic voltage transformers with IEC 61850-9-2 digital outputs rated at up to 500/√3 kV
Conventional current and voltage instrument transformers (accuracy class 0.2)
Merging Units (accuracy class 0.1)
Electrical energy meters with either digital (IEC 61850-9-2) or conventional inputs (accuracy class 0.2S)
Phasor Measurement Units (PMU) of accuracy class 0.1
Protection and control equipment with IEC 61850-9-2 inputs (accuracy class 0.2)
Power Quality Analyzers

Sphere of application

The mobile laboratory was designed to be used by metrological inspection services: to test, maintain and repair to some extent measuring equipment installed at both conventional and digital substations and to perform their regular calibration and certification.

Basic specifications

Portable current transformer of reference class TTIP

Accuracy class: 0.05

Rated currents:

TTIP 100/5(1): 5; 10; 15; 20; 25; 30; 40; 50; 60; 75; 80; 100 A

TTIP 5000/5(1): 150; 200; 250; 300; 400; 500; 600; 750; 800; 1000; 1200; 1500; 2000; 3000; 4000; 5000 A

Reference voltage transducer (HV reference of scaling factor) CHVT

Accuracy classes: 0.05, 0.1

Rated voltages:

6/√3; 6; 10/√3; 15; 35/√3; 35; 110/√3; 220/√3; 330/√3; 500/√3 kV

Other values of rated voltages are available on request.

Reference comparator Energomonitor-61850

Accuracy classes: 0.02; 0.05

Basic accuracy charcteristics

Transformer type

Measurement error




0.002 %

0.1 min


0.015 %

1 min

As part of the reference setup MarsTest-61850, Energomonitor-61850 provides for accuracy testing of Merging Units, conventional electrical energy meters, PQ analyzers, protection and control systems.

Calibrator of digital data streams MarsGen-61850

Basic errors of setting: ±0.03 %.

Synchronization error (1 PPS): ±2•10–6 Hz

As part of the reference setup MarsTest-61850, the calibrator provides for accuracy testing of digital meters, PQ analyzers, protection and control systems with IEC 61850-9-2 digital outputs.


Basic components

Reference setup for testing both conventional and digital measuring equipment
Standard capacitive transducer for testing voltage transformers 6÷500 kV
(accuraсy class 0.05, 0.1)
Standard current transformers
(accuraсy class 0.05)
Adjustable current source up to 6 kA
Adjustable source of high voltage up to 350 kV
Car model is at customer's option