NewElec’s senior technician, Howard Madiba, recently assisted a switchboard manufacturer to program the NewCode three-phase motor protection and control relays. The assistance offered included upgrading the relays, programming the protection settings, verifying the logic settings as implemented on the schematics, as well as cold commissioning.
NewCode relays are attachable to external current transformers and software calibrated for the application. NewCode offers Profibus, Modbus and Canbus communications protocols making the relays an ideal solution for plant protection and automation. Comprehensive motor protection is provided with time and date stamped event and fault records, as well as integrated user-configurable control logic functions and standard starter control blocks. The front-end data recorder and spectrum analyser can be used to monitor motor performance or to detect up to the 9th harmonic of any three-phase current.
The relay detects earth leakage currents with the aid of the external core balance current transformer and is configurable to operate in inverse definite minimum time (IDMT) or instantaneous definite time (IDT) mode. The relay’s simulation function can be used for personnel training or relay functionality testing. The low voltage switchgear panels are ultimately destined for a coal mine.
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