ABB has launched a new motor protection relay, the M102, part of ABB's Intelligent Switchgear System family of products, specifically targeted to meet some of the unique requirements of the mining and water industries.
The M102 is easy to operate, connects easily to any control system and is fully type tested to Australian standards. It uses standard communication cables, can be programmed both remotely and via the control system and is also suitable as part of a retrofit solution.
There are two options of protocols used for interfacing with the upper level control system - the Modbus RTU and Profibus DP. The redundant ports provided in the M102 relay with Modbus RTU protocol makes it possible to build up the stable redundancy communication network.
In addition, the M102 is able to continuously collect and relay data without interrupting processes, providing timely and accurate protection by giving fault alarm and protection trip to safeguard motors and ensure a smooth production process.
Motor protection relays are designed to protect electrical equipment against thermal overload, motor stall, phase failure, phase unbalance, no load, overload, earth fault, motor overheat, focusing on providing a comprehensive and dedicated protection for motors.
Thermal overload protection keeps track of and calculates the thermal capacity of the motor in operation to protect the motor against overheating, which may shorten the service life of the motor or damage it.
In addition, the thermal memory function of the thermal overload protection is particularly important when frequent starting is required. The M102 unit simulates the thermal conditions in all operating states of the motor to maximise the use of the motor on the premise of safe operation.
Motor protection relays are a valuable way of integrating switchgear and control systems in order to minimise cabling and increase information availability to maintenance managers and control operators.
The benefit of this is to improve preventive maintenance and ensure flawless plant operation of the motor control centres.