RET620
PublishedTransformer Protection Relay
ABBElectrical & LightingRelayIndustrial supply
ABB RET620 transformer protection and control relay (Relion family) for two-winding power transformers. Differential, restricted earth fault, overcurrent and thermal overload protection; IEC 61850 Ed.1/2, Modbus, DNP3, IEC 60870-5-103; 24-250 V DC or 48-240 V AC; 50/60 Hz.
Wholesale supplyRET620
No public pricingPriced per agreement on volume and market. Send your quantities — Kaysan replies with availability and wholesale terms.
Product identity6 fields
Item nameTransformer Protection Relay
Item number / codeRET620
BrandABB
Product lineIndustrial supply
CategoryElectrical & Lighting
Product typeRelay
Technical data12 rows
Voltage250 V
CommunicationSupports various communication protocols for seamless integration into substation automation systems
Communication ProtocolsIEC 61850 Edition 1 and 2, Modbus, DNP3, IEC 60870-5-103
Control FunctionsAutomatic voltage regulation for power transformers with motor-driven on-load tap changers, circuit breaker control, and disconnector control
Dimensions4U height, 1/2 x 19" width
Frequency50/60 Hz
Monitoring and SupervisionCondition monitoring, trip-circuit supervision, self-supervision, and fuse failure supervision
Operating Voltage24-250 V DC or 48-240 V AC
Power Consumption10 W (typical)
Protection FunctionsAdvanced differential protection with high inrush stability, restricted earth fault protection, overcurrent protection, and thermal overload protection
ScalabilityExtensive possibilities to tailor configurations to
Time SynchronizationIEEE 1588 V2 Precision Time Protocol, SNTP, IRIG-B
Reference numbers1 public
ABBRET620