Flameproof compact station type MSL 610

The compact station type MSL 610 is a switching device designed for underground mining, to remotely control electric drives of mining machinery and equipment, powered by a three-phase alternating current network with an insulated star point of the transformer (IT network).

The increased degree of functional safety is achieved by means of a suitable connection combination for overload and short-circuit protection, leakage protection, protective conductor continuity control, receiver temperature (PTC), control and instrument relays, disconnector. The main compartment cover is equipped with a Quadrangular control panel with a sight glass to view all the parameters of the station operation on the internal LCD monitor. There is an emergency stop switch on the main compartment lid to disconnect the supply voltage from all loads powered by the station.

The device is equipped with a single power supply circuit, equipped with a hand-operated disconnector. The outgoing feeders are controlled and monitored by means of:

• individual control and measuring modules,
• multifunction relay type PMB.

The equipment can comprise up to eight single main outgoing feeders, up to four lighting outgoing feeders supplied from a transformer up to 16 kVA and up to four auxiliary outgoing feeders. The power supply can be supplemented by a starter with a current corresponding to the maximum current of the disconnector with a supplementary bypass contactor.

The device contains an integrated PLC, which is responsible for controlling and supervising the outgoing feeder. Data transmission is carried out via intrinsically safe modules, Ethernet communication interfaces, RS485, RS422, RS232, CAN etc. suitable for transmission via copper wire and optical fibre cables. The components used ensure reliable operation of the compact station in the underground mining, while meeting increased safety requirements.

Characteristics

• rated current up to 500 A, (up to 800 A – version with power switch)
• up to eight independently protected outgoing feeders,
• local or remote control,
• clear operating status visualisation,
• small overall dimensions,
• easy access to station internals.