Electric motors H27RT

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Electric motor H27RT

Compact cast iron frame

Online contact

00421 907 937 187
(international sales manager)
E-mail: mv@vyboelectric.eu

High voltage motors IC511

electric motors H27R-TB

132kW - 7000kW1000V - 13800V

Medium and high voltage electric motors with tube cooling IC511 H27RT series

Type of electric motor: H27RT
TEFC Totally enclosed fan cooled three phase asnychronous electric motor, can be equipped with ventilation
Frame sizes: 355mm-900mm
Power range: 132kW-7000kW
Voltage: 1000V-13800V (Cusomized too on low voltage-380-1000V)
Frame material: welded frame
Protection: IP55,65,67
Cooling: IC511,IC516(tube cooled)
Mounting: B3,B35,V1,IM V15
Number of poles: 2-40
Frequency: 50Hz,60Hz (and customized…)
Possible: Special winding of VFD use,can support several kinds of voltage and frequency
Accessories: PT100,PTC and other thermal elements can be chose to protect bearings and winding Heaters, anti-vibrations senzors and other
IC511 electric motors
Compact, ergonomic, modern frame
IC511 electric motors
H17R Stator
H17R winding
Winding
H17R rotor
Rotor
IC511 electric motors
Reinforced shields and reinforced bearings
IC511 electric motors
Fast delivery

Three-phase HV (high voltage). A LV (low voltage) asynchronous squirrel cage motors  H27R-TB for difficult working conditions, demanding applications and for energy.

High voltage electric motors H27R-TB IC511

Motors of the H27R-TB series have a short rotor, they are wound with a stepped cover IP 55, cooling IC 511, foot shape IM 1001. Upon agreement, the motors can be delivered in the form of IM B35 or IM B5, IM V1. The nominal voltage is 380V – 11000V and the frequency is 50-60 Hz.

Frame, stator and windings of high voltage electric motors H27R-TB

The stator frame of the H27R-TB motor here is of welded construction. The frames have high mechanical resistance and their design allows the engine to be used in heavy traffic. Stator bundles are self-supporting constructions, enabling careful winding of the stator. They are inserted into the frame only after winding and impregnation. The thermoreactive insulation system of the stator winding based on restored sulfate, foil materials, glass and polyester resin has insulation class F or H, which is not fully thermally utilized.

The stator winding is two-layer with a shortened pitch, it has template coils and is connected in star or delta. The stator windings have three to six terminals connected to three to six terminals in the external stator terminal cover. Insulation system straight winding ensures high thermal and climatic resistance, so electric motors can be operated in difficult climatic conditions without special precautions. The stator winding is characterized by high mechanical strength stiffness and compactness.

Rotor and rotor cage of high voltage electric motors H27R-TB

The rotors have a cast aluminum cage or copper strip. Appropriate design solution of the rotor creates a compact rotor with high mechanical strength, so the rotors are suitable for operation in difficult working conditions. Rotor cage resistance has been verified by highly demanding tests.

Bearings and grease
The motor bearings are rolling, lubricated with grease. Bearing nodes are provided for relubrication while the machine is running and grease waste. With a suitable dimensioning of the bearing nodes, the calculated service life of the bearings reaches at least 20,000 hours for an motor with a speed of 3,000 min or less. 50000 hours for an motor with a speed of 1500 min and below. The motor has roller bearings lubricated with high-quality Jehoz plastic grease. The type and relubrication period are indicated on the relubrication shields.

Special equipment for electric motor H27R-TB IC511

To ensure reliable electric motor function in difficult working conditions. In terms of energy, each motor of the H27R-TB series has special equipment:

Terminal cover for connecting the mesh cable
The high-voltage terminal block cover for connecting the mesh cable is two-part, sufficiently spacious and with IP 55 protection. Inside the protection are located three connection terminals and an internal protective terminal. The solution of the terminal cover allows the motor to be connected with a three-wire copper or aluminum cable. The terminal cover is located on the right or left side of the motor, or on top of the motor. By agreement, it can be placed on the left side. The terminal cover is airtight and ensures the safety of the operator even in the event of a sudden short circuit inside the cover. The terminal cover has a short-circuit resistance of 40 kA rms at 6 kV for 0.200 second.

HV – high voltage electric motors H27R-TB VYBO Electric

Low-voltage terminal block cover
On the same side of the electric motor as the high voltage terminal cover for attaching the mesh cable, there is also a low-voltage terminal cover, where the outputs of the temperature sensors from the stator winding are brought out and resistance temperature sensors in the bearing nodes.

Temperature sensors in the stator winding
This is PT100 protection, or thermistor protection, which protects the three-phase high voltage asynchronous motor before the permitted temperature of the stator winding is exceeded. Three thermistors are located in the customs part of the stator winding and are connected in series. Their outputs are in the low-voltage terminal cover or separately. A pair of PT100 sensors for remote and local indication of the bearing temperature is built into each bearing shield.