Through the development of protection, control, automation and communication technology, NR’s digital substation technologies offer a complete digitalized solution that fully connects the control room to the switchyard with optic fiber links. This proven solution reduces your capital investment, operational and maintenance costs. It also offers unmatched information integration, and provides better reliability and security for substations.
PCS-221S Merging Unit (MU) is used to receive AC analog values and transmit the Sampled Values (SVs) to protection devices, Bay Control Units (BCUs) or electricity meters through optical communication channels based on the IEC 61850-9-2 protocol and IEC61869-9 protocol. PCS-221S provides 2 methods to receive AC analog values: to sample AC analog values directly as a Stand-Alone Merging Unit (SAMU), or to receive digital sampling data from Low-Power Instrument Transformer (LPIT) via optical fiber. LPIT is also known as NCIT (Non-Conven…More Info
Merging units are used to sample AC analog values and transmit the sampled values(SV) to protection devices, bay control units(BCU) or electric meters through optical communication channels based on the IEC61850-9-2 protocol.More Info
The PCS-222 is an intelligent terminal used to control primary switching devices, whichinclude the circuit breaker and main transformer, in the digital substation at all voltage levels. It supports realtime GOOSE communication, and can realize tripping and closing of circuit breakers and switches by matching protection and BCU. It can locally acquire binary signals of primary equipment such as breakers and switches at the same time. It can meet the requirement of GOOSE tripping by point-to-point mode.The device can be installed outdoors nearby the primary equipment or conn…More Info
To keep pace with the increasing demands of transmission capacity and rising system voltage, NR Electric has pursued advanced research on electronic CTs and VTs to ensure maximum reliability and availability in the applications of metering and protection relays. ECTs/EVTs have the advantages of no magnetic saturation, none ferromagnetic resonance, large dynamic measuring scope, wide frequency band and compact structure.NR Electric’s electronic CTs/VTs are suitable for both gas-insulated switchgears (GIS) and air-insulated switchgears (AIS). Furtheremore, they have …More Info