Protect Transformer & OLTC from damage
PROTECTIVE RELAY
WHY PROTECTIVE RELAY?
- Oil Surge Relay (OSR)
PROTECTIVE RELAY
The Protective Oil Surge Relay (OSR) operates on the principle of Oil turbulence . OSR mounted in the Pipeline connecting Conservator and On-load tap-changer (OLTC). Under normal condition, the oil flow rate through the OSR will be in control. Any faults occurring in the OLTC will lead to the Pressure buildup which results in Oil turbulence. The increased Oil flow rate beyond the safe limit through OSR will trip the Transformer and thereby safeguarding the Transformer and OLTC.
OSR is suitably designed and tested to function at extreme environmental conditions and at intensive seismic levels.
Transformer Monitoring
MODERN, SUPERIOR & VERSATILE
Load current and Voltage measurement
Active and reactive power
Oil temperature
Winding temperature
Ambient temperaturev • Alarm and tripping signals from various devices (e.g. Bucholz, etc)
Gas and Moisture measurement as taken from Sensors
Oil level indication
Control System Communication
MODERN, SUPERIOR & VERSATILE
Connection to SCADA / DCS
IEC 60870-5-101 and 104
IEC 61850
Integrated web-server
Individual Solutions
MODERN, SUPERIOR & VERSATILE
Tailor-made monitoring functions (e.g. overload capability)
Freely configurable inputs and outputs
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