Motor protection relay for small- to medium-sized motors with advanced communication and event recording. ANSI codes 50/51/50N/51N(S)/64/50H/51H/68H/46/46R/46L/49M/87N/48/14/86/66/37/51LR/50BF/52BF/74TC.
Transformer voltage regulation relay incorporating current and voltage protection. ANSI codes 87N/49T/50/51/50N/51N(S)/64/50H/51H/68H/46/46R/46L/59/27/59N/59P/27P/47/24/50BF/52BF/60/74TC/90
Transformer protection relay also used for differential protection of rotating machines. ANSI codes 87T/87N/49T/50/51/50N/51N(S)/64/50H/51H/68H/46/46R/46L/50BF/52BF/74TC
Advanced motor protection relay for large motors. Includes voltage and frequency protection. ANSI codes 50/51/50N/51N(S)/64/50H/51H/68H/46/46R/46L/49M/87N/48/14/86/66/37/55/51LR/59/27/59P/27P/47/59N /81O/81U /32/32R/50BF/52BF/60/74TC.
Advanced feeder protection relay for phase fault, earth fault, voltage and frequency protection. ANSI codes 50/51/50N/51N/67/67N/50H/51H/68H/46/46R/46L/49L/87N/59/59N/27/59P/27P/47/81O/81U/81R/78/32/37/32R/ 50BF/52BF/21FL/60/74TC/25/79/64/68.
Feeder protection relay for non-directional overcurrent and earth faults with advanced communication and event recording. ANSI codes 50/51/50N/51N/50H/51H/68H/46/46R/46L/49L/87N/50BF/52BF/74TC/79/64/68.
Energy management system and fault locator. Monitors and records all major electrical quantities and can generate alarm outputs as well as communicating with SCADA. ANSI codes for alarms only; will not initiate trip 50N/67N/50/67/21FL/27/59N.
Network control relay for dynamic networks. Features synchronisation checking and automatic re-closing of circuit breakers. Monitors and records all major electrical quantities. ANSI codes 60/74TC/25/79.
Signalling relay with advanced communication and event recording. Has no protective functions but may be used to extend I/O capability of other NP900 relays and communicate with SCADA systems.
Voltage and frequency relay with synchronisation checking across up to three circuit breakers. For bus-bar protection or load shedding schemes. ANSI codes 59/27/59N/59P/27P/47/78/81O/81U/81R/60/74TC/25
Temperature monitoring relays with 4 (STEP840R) or 6 channels (STEP860R). Monitor measurements from Pt100 temperature probes and set trip thresholds. ANSI code 26.
Three-phase overcurrent and earth fault relay with automatic recloser. ANSI codes 50/51/50N/51N/64/46/46BC/49/50BF/74TC/79/86. Part of the NP800 series.
Directional three-phase overcurrent and earth fault relay with automatic recloser. ANSI codes (50/51/50N/51N/64) or (67/67N) /46/46BC/49/50BF/74TC/79/86. Part of the NP800 series.
Directional three-phase overcurrent and earth fault relay with ANSI codes (50/51/50N/51N/64) or (67/67N) /46/46BC/49/50BF/74TC/86. Part of the NP800 series.
Protection for catenary wires on Railways and Tramways with a built-in fault locator and de-icing protection. ANSI codes 21/27/32RP/50/50BF/51/87/79/21FL/50FL/87FL.