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NPG915 - Generator Protection IED

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NPG915 - Generator Protection IED

Multi-Function Protection
Synchronous Control

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 NPG915 generator protection IED is well suited for machines requiring complete generator protections. It can be combined with NPT916 to protect larger machines requiring differential protection and greater protection redundancy.

The NPG915 communicates using various protocols including IEC 61850 substation communication standard.

Product family: 
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
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
32 - Directional power
37 - Undercurrent or underpower monitor
32R - Reverse active power
49M - Machine thermal overload protection
21 - Minimum of impedance
51V - Maximum overcurrent with voltage control
40 - Field failure
24 - Overfluxing
64S - 100% Stator earth-fault protection
50BF - Breaker failure with overcurrent
52BF - Breaker failure protection with position rise
60 - Fuse failure
74TC - Trip circuit supervision of the breaker
25 - Synchro-check
50ARC - Arc protection
86 - Latching of the output contacts
99 - Programmable functions
46/46R/46L - Current unbalance / broken conductor protection
55 - Management of the network power factor
50NARC - Arc protection
47/27P/59NP - Positive sequence under/overvoltage protection



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