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NPF915 - Advanced Feeder Protection IED

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NPF915 - Advanced Feeder Protection IED

Current Protection
Voltage/Frequency Protection
Power Protection
Directional Protection

The optimal management of electrical power systems is based in particular on the reliability, availability and communication skills of protection, measurement and automation devices.

The NPF915 offers a modular feeder protection and control solution for applications requiring both current and voltage based protections along with complete measurements. Optional cards (I/O, communication...) are available for more comprehensive monitoring and control applications.

The NPF915 communicates using various protocols including IEC 61850 substation communication standard.

Product family: 
Cable Arrival / Departure
ANSI code : 
50 - Instantaneous overcurrent
51 - Overcurrent
50N - Instantaneous earth fault overcurrent
51N - Earth fault overcurrent
50H - Harmonic overcurrent instantaneous protection
51H - Harmonic overcurrent timer protection
68H - Broken conductor protection
49F - Thermal overload for cable
87N - Cable-end differential protection
67 - Phase directional overcurrent
67N - Earth directional overcurrent
59 - Overvoltage
27 - Undervoltage
81O - Over frequency
81U - Under frequency
81R - Rate of change frequency
78 - Vector jump / surge
32R - Reverse active power
37 - Undercurrent or underpower monitor
32 - Directional power
50BF - Breaker failure with overcurrent
52BF - Breaker failure protection with position rise
21FL - Catenary fault locator
60 - Fuse failure
74TC - Trip circuit supervision of the breaker
25 - Synchro-check
79 - Recloser
68 - Cold-load pick-up block
50ARC - Arc protection
86 - Latching of the output contacts
99 - Programmable functions
46/46R/46L - Current unbalance / broken conductor protection
51V - Maximum overcurrent with voltage control
79N - Zero sequence recloser
50NARC - Arc protection
47/27P/59NP - Positive sequence under/overvoltage protection
67NT - Intermittent earth fault protection
59N - Maximum of zero sequence voltage



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