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Overview
General description
Technical data overview
Features
Customer benefits
Typical applications
General description
J series from Loher 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 Exp system
harmonized for the application, these motors can be used in
Zone 1 even up to the highest power range.
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.
Customer benefits
Complies with almost all of the user requirements and
specifications (no deviation philosophy)
Engineered 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)
Typical applications
Used in Ex-Zone 1 and 2 for
Pumps
Compressors
Fans
Extruders
Technical data overview
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Motors:
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JH.P / MLFB: 1PS6
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Shaft heights:
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500, 560, 710, 800
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Power range:
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355 kW - 10000 kW
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Number of poles:
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2 - 16 poles, higher pole numbers on request
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Voltage range:
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3000 V - 11000 V
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Rated voltage:
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3.3 kV / 4.16 kV / 6 kV / 6.6 kV / 10 kV / 11 kV
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Frequency converter:
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Line and converter operation
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Degree of protection:
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IP55, IP56
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Cooling type:
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IC611, IC616, IC666, IC81W, IC86W
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Type of construction:
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IM B3, IM B35, IM V1
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Enclosure:
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Welded steel
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Bearings:
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Roller bearings, sleeve bearings
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Standards:
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IEC, EN, DIN, VDE
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Explosion protection:
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II2G Ex px (e) II
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Type of protection:
without explosion protection
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N.A.
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Noise level:
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max. 85 dB(A) (Load, 50 Hz), lower noise versions
are available
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