ZKIE / 2.ZKIT / 2.RZKIT…ic6 large low-voltage induction motors 400–2500 kW, IC 411/511/611 cooling

ZKIE / 2.ZKIT / 2.RZKIT…ic6 large low-voltage induction motors 400–2500 kW, IC 411/511/611 cooling

Country: Serbia · Model: ZKIE / 2.ZKIT / 2.RZKIT…ic6

Large low-voltage squirrel-cage induction motors rated 400–2000 kW, up to 2500 kW with the IC 611 heat exchanger, for 230–690 V. They are used where a site has no 6–10 kV distribution network or the drive is fed from a 690 V frequency converter. Typical places are mines, quarries, metallurgy, pumping stations, the cement industry and oil sites.

Designation: ZKIE, 2.ZKIT (high efficiency); 2.RZKIT…ic6 (with IC 611 heat exchanger)
Rotor type: squirrel-cage
Power: 400–2000 kW (ZKIE, 2.ZKIT); 400–2500 kW (IC 611 version)
Voltage / frequency: 230–690 V / 50 Hz, 60 Hz; IC 611 version — 690 V / 50 Hz

Request a quote All specifications

Technical specifications

Designation	ZKIE, 2.ZKIT (high efficiency); 2.RZKIT…ic6 (with IC 611 heat exchanger)
Rotor type	squirrel-cage
Power	400–2000 kW (ZKIE, 2.ZKIT); 400–2500 kW (IC 611 version)
Voltage / frequency	230–690 V / 50 Hz, 60 Hz; IC 611 version — 690 V / 50 Hz
Shaft height (frame)	355–710 (ZKIE, 2.ZKIT); 400–630 (IC 611)
Number of poles	2–8
Insulation class	F (IC 611 version — F / B)
Protection degree	IP55
Cooling	IC 411, IC 511, IC 611 (air–air)
Mounting	IM B3, IM V1 (IC 611 version — also B5)
Mounting dimensions	IEC 60072
Standard	IEC 60034-1

Specifications are taken from the manufacturer’s technical documentation. Updated 11/09/2026.

Description

ZKIE and 2.ZKIT motors have a shaft height of 355–710, from 2 to 8 poles, and are supplied with 230–690 V at 50 or 60 Hz. Cooling is chosen from three schemes. IC 411 means the ribbed frame is cooled by the motor's own fan, IC 511 uses built-in air tubes, and IC 611 is a closed circuit with a mounted air–air heat exchanger. The 2.RZKIT…ic6 line is made only with the IC 611 heat exchanger at 690 V, 50 Hz and frames 400–630. Internal air circulates in a closed circuit and passes heat to the outside air through a tube bundle, so IP55 protection is kept even with high losses. Class F insulation, used to class B in the IC 611 version. Mounting is IM B3 or IM V1, and IC 611 also has B5. Mounting dimensions comply with IEC 60072, and general requirements are set by IEC 60034-1.

How to choose

First determine the supply voltage and the cooling scheme. Up to 2000 kW, ZKIE and 2.ZKIT fit, and from 2000 to 2500 kW only 2.RZKIT…ic6 with the heat exchanger remains. When replacing Soviet-made and CIS machines at 380/660 V, check the rated voltage, cooling scheme and frame size, allowing for the mounted heat exchanger. If class IE3 up to 1000 kW is needed, see 3.ZKE at 18.5–1000 kW.

Request a price and lead time

ZKIE / 2.ZKIT / 2.RZKIT…ic6 large low-voltage induction motors 400–2500 kW, IC 411/511/611 cooling. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

What is the highest power of a low-voltage motor in this series?

Up to 2000 kW for ZKIE and 2.ZKIT, and up to 2500 kW for 2.RZKIT…ic6 with the IC 611 heat exchanger. Supply voltage up to 690 V.

How do the IC 411, IC 511 and IC 611 cooling schemes differ?

IC 411 cools the ribbed frame with its own fan, IC 511 uses built-in air tubes, and IC 611 works with a closed circuit and an air–air heat exchanger, keeping IP55.

What voltage and frequency are these motors designed for?

ZKIE and 2.ZKIT for 230–690 V at 50 or 60 Hz. The IC 611 version is made only for 690 V and 50 Hz.

Can such a motor be fed from a frequency converter?

Yes, the motors are suitable for supply from a 690 V low-voltage frequency converter. The separate 2.RZKIT line covers 18.5–2500 kW specifically for operation from a converter.

What shaft heights and standards apply?

Shaft height is 355–710 for ZKIE and 2.ZKIT and 400–630 for IC 611. Versions comply with IEC 60034-1, and mounting dimensions follow IEC 60072.