MARS-AIT

Automated source of test current

MARS-AIT is an automated current source with nominal values of output current from 0.5 to 5000 (3000) A.

It comes in two modifications with respect to the nominal current: 3 kA and 5 kA.

Purpose

MARS-AIT is an automated current source with nominal values of output current from 0.5 to 5000 (3000) A. It comes in two modifications with respect to the nominal current: 3 kA and 5 kA.
Designed to operate either as an independent stand-alone current source or as part of a transformer test setup, MARS-AIT is intended for verification/calibration of the following instrument current transformers:

	Conventional CTs (Russian standard GOST 7746)
	Low-power CTs (IEC 61869-10:2017) with analogue output (1 mV ... 10 V)
	Electronic CTs (IEC 61869-8) with IEC 61869-9 digital output in the form of sampled value streams in accordance with IEC 61850-9-2LE.

Target customers

Testing laboratories of power industry companies, instrument transformer manufactures, energy supplies, and certification bodies.

MARS-AIT is suitable for both on-site and in-lab applications

Typical scheme for testing an instrument current transformer using MARS-AIT as part of a test system

Basic specifications

Parameter	Value
Output current	0.5–3800 A or 0.5–6000 A (supplied on order)
Output current setting error (max.)	10 %
Output power	2800 VA, or more
Total power consumed from the mains	3000 VA
Dimensions (max.): (Length, width, height):	LATR-AIT: 270 × 550 × 280 mm GT-IT5000: 380 × 170 × 310 mm
Net weight (max.):	LATR-AIT: 25 kg GT-IT5000: 35 kg GT-IT3000: 21 kg

Software

E-TransformerTest-CT

Benefits

	A high degree of automation provided by E-TransformerTest-CT software makes CT verification/calibration procedures much easier (connection to a PC is provided via Ethernet)
	Built-in current sensors (I_NOM = 100 A and I_NOM = 3000 A) allow MARS-AIT to be controlled independently or as part of a CT test system
	Powered from a household AC mains supply (16 A, 230 V, 50 Hz)
	Supports the mode of generating small current (from 0.5 to 10 A) with automatic connection of ballast resistors
	Enables the reactive power compensation circuit when the generated current is near the maximum
	Provides current overload protection
	Can be operated manually
	Main parameters are shown on the display

Scope of supply

Variable-ratio transformer LATR-AIT – 1 unit

Generating current transformer GT-IT5000 or GT-IT3000 – 1 unit

Software E-TransformerTest-CT on the flash drive

Set of cables

Documentation: User manual – 1 copy

Transportation box

Documentation

User manual (1.47 Mb, pdf)