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ECIT-3 is a family of single-phase combined current and voltage instrument transformers designed for medium-voltage applications (from 3 to 35 kV). Featuring digital outputs, ECIT-3 serves as a data source for measurement, protection, and automation devices.

• Datasheet

ECIT-3

for medium-voltage electrical installations from 3 to 35 kV

Open image

Hover over to see the location

• Primary contacts
• 2 × Ethernet 100Base-TX(FX)
• Power circuits and time synchronization

Open image

Hover over to see the location

• Primary contacts
• Power circuits and time synchronization

Technical specifications

Order code

Support

Modification ECIT-3-	20-50(1250)	35-50(630)
Voltage Class	up to 20 kV	up to 35 kV
Rated primary current, In	50 A	50 A
Current accuracy class	0.5S/5PR500	0.5S/5PR500
Rated primary current up to	1250 А	630 А
Rated short-time thermal current, Ith	25 kA/1 s	25 kA/1 s
Rated dynamic current, Idyn	63 kA	63 kA
Rated primary voltage, Upr, Voltage accuracy class	(3...22)/√3 kV, 0.5/3P	(6...36)/√3 kV, 0.5/3P
Rated primary voltage up to, Um	24 kV	40.5 kV
Rated lighting impulse withstand voltage	125 kV	190 kV
Rated short-duration power frequency withstand voltage (1 min)	50 kV	80 kV
Sampling rate, Hz	14400, 12000
Interfaces	2 × 100Base‑TX (FX LC MM), RSTP, IEC 62439-3 PRP
Protocols	IEC 61850-9-2: 2 × SV (4800, 14400 fps), optional SP (50...4800 fps), IEEE C37.118.2 (1...400 fps), IEC 61850-8-1 GOOSE, IEC 60870‑5‑104, Modbus TCP, web interface
Binary output	140 VAC 0.46 A, 30 VDC 1 A, switching time 5 ms
Time sync	PTPv2 (IEC 61850-9-3), IRIG-A (RS-485)
Disturbance recording	10 records (1+4 s), sampling rate 2400 or 2000 Hz
Relay protection	PVOC, PIOC
Optional	Extended protection and automation suite: PVOC/PDOC, PIOC, SARC, PTEF/PDEF, PTUV, PPBR, RBRF, Busbar Blocking logic, Dead/Live line detection Publication SP, merging SP Three-phase energy metering
Power supply	18...36 VDC, 10 W
Operating conditions	-45(-50)…+50(+60) °С, RH — up to 98 % (+25 °С), 84…106.7 kPa, 1000 m above sea level
Design dimensions, mm weight, kg	240 × 98 × 236 ≤ 2,5

Documents

ECIT: Manual

01.10.2024

Download (1 MB )

ECIT-3: datasheet

04.08.2026

Download (337 KB )