Annual Report 2011-2012

Annual Research Report 2011-2012
Relay and Protection Reference Laboratory
Department Transmission & Distribution Research Center
Research Center: Line and Substation
Lab Manager: FarshidMansourbakh
Scope of services:
• Functional tests and trip time recording, define operating characteristics for
single and three phase relays according to IEC 60255,contain of secondary
relays(Current, frequency, voltage, directional,distance, differentional,...) and
primary relays.
• Phase angle and current ratio Error definition in low voltage current transformer
according to IEC 60044-1.
• Functional Test on low voltage fuses according to IEC 60269.
• Complete Tests on Voltage, Current, Active and Reactive transducers according
to IEC 60688.
• Dielectric strength and Insulation resistance Tests on CTs and Transducers and
Protection Relays according to IEC 61010 and IEC 60255-5.
• Tests of battery chargers and power supplies according to NEMA PE5.
• Functional tests on low voltage switchgears and control gears.
• Functional Verification of Repaired Relays and definition their Operating
characteristics.
• Very Low Resistance and Impedance measured in high accuracy.
• High AC Current Injection up to 22 KA at power frequency in reduced voltage.
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