LOHER VARIO PLUS

LOHER VARIO PLUS motors have a modular cooling design featuring double-flow inner cooling for a high power density and a homogeneous temperature distribution.
2 versions are available:

Mounted air-water heat exchanger

(type JHWP–... for roller bearings / JHXP-... for sleeve bearings)
Heat exchangers specifically coordinated for this series guarantee optimum cooling. The motor power loss is dissipated through the cooling water and is therefore de-coupled from the ambient temperature. The heat exchangers are available in a wide variety of versions with single and double pipe types. The high quality materials used for the cooler are adapted to the particular requirements.

Mounted air-air heat exchanger

(type JHRP–... for roller bearings / JHQP-... for sleeve bearings)
The motors are equipped with air-air heat exchangers. The cooling pipes are manufactured out of galvanized steel; stainless steel versions are available for especially aggressive atmospheres. In conjunction with the Ex p system harmonized for the application, these motors can be used in Zone 1 even up to the highest power range.

Область применения

Used in Ex-Zones 1 and 2 for

Pumps
Compressors
Fans
Extruders
Branch Oil & Gas

Особенности

Complies with almost all of the user requirements and specifications (no deviation philosophy)
Configuration based on international standards (ATEX, NEPSI, GOST-R, CCOE certified)
High level of acceptance in the various sectors. For instance, Shell and DOW recommend these motors
Complete project documentation guarantees minimum planning costs
High degree of cost effectiveness and low operating costs as a result of the optimum electrical and mechanical values
High degree of variability and versatility using a welded steel enclosure (to adapt the dimensions, mounted components)

Технические данные

Motors:	JH.P / MLFB: 1PS6
Shaft heights:	500, 560, 710, 800
Power range:	355 kW - 10000 kW
Number of poles:	2 - 16 poles, higher pole numbers on request
Voltage range:	3000 V - 11000 V
Rated voltage:	3.3 kV / 4.16 kV / 6 kV / 6.6 kV / 10 kV / 11 kV
Frequency converter:	Line and converter operation
Degree of protection:	IP55, IP56
Cooling type:	IC 611, IC 616, IC 666, IC 81W, IC 86W
Type of construction:	IM B3, IM B35, IM V1
Enclosure:	Welded steel
Bearings:	Roller bearings, sleeve bearings
Standards:	IEC, EN, DIN, VDE
Explosion protection:	II2G Ex px (e) II
Type of protection: without explosion protection	N.A.
Noise level:	max. 85 dB(A) (load, 50 Hz), lower noise versions are available

Features

Corrosion protection using special paint finishes according to the manufacturer's standard or customer's specification.
The motors are available as special version for polar regions down to -40 °C or for desert regions up to +60 °C.
Wide range of connection systems for large cable cross-sections, high short-circuit strength or phase-segregated version.
Optimized starting and operating parameters and high efficiency by using copper bar rotors as standard.
All motors have a double flow inner cooling for a high power density and a homogeneous temperature distribution.

Дальнейшая информация

Brochures
Pumps, fans, compressors