Device for control of 2-speed motors in the shaft WDCV-2-160R/400

The device is designed for remote control two speed asynchronous motor reverse at a reduced speed. Used for dvuhmestnij scraper conveyors equipped with two-speed asynchronous motor a squirrel cage rotor in conditions of mines dangerous on gas and dust.

When managing a two-speed motor the device provides auto-translation mode with reduced speed (the motor is 85 kW) to high speed (motor up to 250 kW).

The device is mass-produced according to TU U 27.1-00165675-026:2015.

The device provides the following functions:

- selection of operation mode "Work Repair";

- in the "Work"- inclusion of motor shunting (low) speed, acceleration motor time, during (8 – 10), followed the shift motor is working (great) speed. Reversible switching of the electric motor is carried out only on shunting speed.

- in the "Repair" the startup and operation of the electric motor, in direct and reverse inclusion is only on shunting speed.

Electric diagram of the device is ensured by:

- protection from short-circuit currents extending from the device power circuits and lighting the alarm if it is triggered, current overload protection and light alarm when it triggered;

electric lock preventing the inclusion of the device when the insulation resistance in outgoing power circuits below 35 kω when the voltage of 660 V and 110 ohms at voltage 1140V and light alarm when activated locks;

- protection when you open or when you increase the resistance grounding circuit between the device and the motor to a value more than 50 Ohms;

check the operation of the device prior insulation monitoring;

protection joining by heating of windings of electric motors with built-in in them of PTC resistors;

- zero protection;

- protection from the loss of control in-circuit wiring of remote control circuit each other;

- protection from self-energizing device at short (less than 1) increase the mains supply voltage up to 150 % of the rated value;

 check the maximum current protection;

- protection of the motor when one phase is open and the alarm when it is triggered;

- triggering of network wide protection against leaks to ground in case welding of the power contacts of the vacuum contactors in any of the three phase;

- triggering of network wide protection against leaks to ground in case the occurrence of leakage to earth in any of the windings two-speed of the electric motor;

- the intrinsically safe circuits of remote control.

1. The device can be used for drive control of the scraper the conveyor of lava with the ability to control the device from equipment ASSOU or CD-A production of PJSC "NPP "MSSA".

2. The device is designed with using vacuum contactors FSUE AT "SevaR" and modern blocks protection and control.

3. The cost of the device is much lower than foreign counterparts.

The device with marking of explosion protection PB 3ВИа designed for use in coal the mines, hazardous gas and dust.

Climate version and category of accommodation devices УХЛ5 according to GOST 15150-69.

Temperature the environment from minus 10 °C to 35 °C.

Relative humidity (98±2) % at temperature 35 °C With condensation.

Degree enclosure protection devices of IR54 according to GOST 14254-96.

The device ensures reliable operation in continuous, intermittently-continuous and intermittent modes.

Device to operate normally when oscillation voltage electrical network from 85 % to 110 % of nominal.The design of the shell of the device is made taking into account the latest requirements of explosion protection: quick opening cover, switch, mounted in a separate chamber, the blockiness of the design and interchangeability similar blocks.

The device is equipped with a display unit, providing information about the status of device triggering channel overcurrent protection channel overcurrent and failed start-up, open-phase mode, warning and alarm levels of heat of the motor windings, reducing the insulation resistance of the exhaust accession.