NG20

Generator protection

Several functions, required for synchronous generators and not self-started synchronous motors are included.

FUNCTIONS

STANDARD PROTECTIVE & CONTROL ELEMENTS

Sequence of Fault Recorder (SFR)
Sequence of event Recorder (SER)
Phase overcurrent side H and side L - 50/51
Overfrequency - 81O
Underfrequency - 81U
Residual Overvoltage - 59N
VT Supervision - 74VT
Voltage-controlled / restraint overcurrent - 51V
Overvoltage - 59
CT Supervision - 74CT
Under Voltage - 27
Directional active underpower - 37P
Breaker Failure - BF
Loss of Field - 40
Maximum Residual Overcurrent - 50N/51N(1)
Thermal Image Motor/Generator - 49MG
Minimum Power Factor - 55
Trip Circuit Supervision - 74TCS
Negative sequence overcurrent Motor/Generator - 46MG
Locked Rotor - 51LR(48)/14

SW PACK OPTIONAL CONFIGURATION

Digital Fault Recorder (DFR)

HW PACK OPTIONAL CONFIGURATION

Thermal with Pt100 Probes - 26

COMMUNICATION FUNCTIONS

Modbus TCP-IP
One USB Type B local port for communication with ThyVisor setup software
Modbus protocol RTU RS485 / IEC 870-5-103 / DNP3

DOWNLOADS

Flyer NG20

NG20 Coding

NG20 Manual

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