LOHER CHEMSTAR

Low voltage motors in non-explosive environments for standard and special applications

General description

Based on its well-proven standard platforms, Loher precisely adapts its motors to the specific project and with the highest degree of flexibility - regarding the mechanical design, electrical design as well as special monitoring equipment and cooling types. This results in quite individual drives, perfectly tailored to the particular plant or system, application or customer specifications.
All parameters of the gray cast iron motors have been optimized, i.e. the winding and rotor are optimally adapted to the environmental conditions. Only then can the optimum values for efficiency and power factor be achieved (without derating). The result is reflected in the energy saving for the lowest load on the line supply.
These motors are available in the following versions - surface-cooled (t.e.f.c.) - water cooled and as braking motor up to approx. 500 kW. In addition to the usual types of construction (where the shaft and flange is also in conformance with NEMA), special numbers of poles, pole-changing versions, high-speed designs as well as special cooling types are available - precisely to customer specifications.
Our strengths also include special voltages / special frequencies / special insulation / converter operation. The versions with special bearing designs for extremely high radial or axial (thrust) forces are especially worth noting.

LOHER CHEMSTAR - Non-Ex

Technical data overview

Brief overview

Surface cooled (t.e.f.c.)

Water cooled

Braking motor

A...A

ANWA

ABGA

Motors:

1PS0 (LOHER CHEMSTAR acc. to EN and IEC)

Shaft heights:

Frame size 071 to 355 mm (area of standard motors)

Frame sizes 160 to 355 mm (area of standard motors)

Frame sizes 090 to 250 mm (area of standard motors)

Power range:
(50 Hz types)

Up to 315 kW (thermally utilized to temperature class B at
TU = 40 °C)

Up to 500 kW(thermally utilized to temperature class B for a water intake temperature of
20 °C)

Up to 55 kW for braking torques from 32 to 400 Nm

Number of poles:

2 - 12 pole; also higher numbers of poles for special versions
pole changing
-2 speeds e.g. 4/2, 8/4, 12/6
-3 speeds e.g. 8/4/2, 8/6/4
(Dahlander or separate windings) (square-law or constant torque applications)

2 - 6 pole

2 - 8 pole

Voltage range:

Up to 1000 V

Up to 690 V

Up to 690 V

Rated voltage:

All of the usual low-voltages and voltage ranges according to IEC 60038
However, also: Non-standard voltages and / or frequencies according to customer specifications

Operating mode:

S1 and various

Degree of protection:

IP55, IP56, to IP68

IP56, IP66 (higher degrees of protection on request)

IP55, IP56, IP66 (higher degrees of protection on request)

Cooling type:

IC 411, IC 416, however, also special cooling types such as e.g. non-ventilated IC 410

IC 71 W

IC 411, IC 416

Type of construction:

IM B3, IM B5, IM B35, IM V1, IM V3, IM V5, IM V18, IM B14, IM B34 (special)

IM B3, IM B6, IM B7, IM B8, IM B9, IM B15, IM V5, IM V6, IM V8, IM V9
IM B5, IM B35, IM V1, IM V3, IM B34, IM B14, IM V18, IM V19 (special)

Enclosure:

All 1PS0 motors in a gray cast iron design

Bearings:

Ball  bearings (standard) and special bearings for high axial (thrust) and radial forces

Standards:

IEC, EN, DIN, VDE

Types of protection:

without

Noise level:

All motors are noise-optimized (noise limit values according to EN 60034-9), low-noise version possible for 2-pole motors (GG3)

All motors are noise-optimized (noise limit values according to EN 60034-9)


Features

Surface cooled (t.e.f.c.) - options

  • Regreasing system from FS 160 - SPM nipple from FS 132 - stainless steel screws / bolts - larger connection system

  • Additional terminal box from FS 132 - anti-condensation heating from FS 132 - condensation water drain from FS 132

  • PTC thermistor as the only protection (TMS) up to and including FS 250

  • PTC thermistor as additional protection (TMS)

  • Can also be supplied for 60 Hz (adapted winding - increased power rating)

  • All motors with insulating material class H

  • All motors are available with an electrical design according to "NEMA Standards Publication No MG1"

  • Flange and shaft end can be designed and implemented in accordance with NEMA

  • Special versions e.g. for: Forced ventilation (for converter operation), mounted speed encoder, non-standard shaft end, backstop, special paint finishes, low temperatures down to -60 °C

  • High-speed motors up to 12,000 rpm

Water cooled - options

  • SPM nipple - stainless steel screws / bolts - larger connection system

  • PTC thermistor recommended as additional protection (TMS)

  • Special mechanical design according to customer specifications

  • All motors with insulating material class H

  • All motors are available with an electrical design according to "NEMA Standards Publication No MG1"

  • Flanged motors can be designed and implemented with flange and shaft end in accordance with NEMA

Braking motor - options

  • All brakes (single disk, spring-operated) are designed for temperature class F

  • Higher braking torques, also motors with other pole numbers can be supplied

  • Can also be supplied with mounted fan for forced cooling and/or speed encoder

  • The air gap can be more easily adjusted for extremely high levels of wear

  • Special mechanical design according to customer specifications

  • Can also be supplied for 60 Hz (adapted winding - increased power rating)

  • All motors with insulating material class H

  • All motors are available with an electrical design according to "NEMA Standards Publication No MG1"

  • Flanged motors can be designed and implemented with flange and shaft end in accordance with NEMA


Customer benefits

  • Full flexibility: Special demands are implemented
    => adapted to special requirements

  • Only quality components are used
    => for an extremely high degree of operational reliability and long lifetime

  • Parameter-optimized motors (adapted winding versions and rotors)
    => for extremely high efficiencies with the best power factors

  • Water cooling
    => smaller outer dimensions, increased power ratings, low moment of inertia, low noise 

  • Braking motors
    => suitable for switching operation at high switching frequencies, constant brake activation and deactivation times and a long lifetime


Typical applications

  • Pumps

  • Compressors

  • Fans

  • Extruders

  • Can be universally used as drive for these applications

  • Tunnel drilling machine

  • Hoisting gear

  • Travel gear

  • Cranes