Ice NP900 Series Protection Control Relay Manuals

Ice NP900 Series Protection Control Relay Manuals

Manuals and User Guides for Ice NP900 Series Protection Control Relay. We have 1 Ice NP900 Series Protection Control Relay manual available for free PDF download: Application Manual

Ice NP900 Series Application Manual

Ice NP900 Series Application Manual (504 pages)

Brand: Ice | Category: Measuring Instruments | Size: 24.63 MB

Table of Contents

Table of Contents
3
Abbreviations
5
General
6
Functions of Np900
7
Measurements
7
Current Measurement and Scaling
7
Voltage Measurement and Scaling
20
Frequency Tracking and Sampling
31
Power and Energy Calculation
34
Protection Functions
42
General Properties of a Protection Function
42
Non-Directional over Current I> (50/51)
58
Non-Directional Earth Fault I0> (50N/51N)
64
Directional over Current Idir> (67)
68
Directional Earth Fault I0Dir> (67N)
75
Intermittent Earth Fault I0Int> (67NT)
83
Current Unbalance I2> (46/46R)
92
Harmonic over Current I )
100
Circuit Breaker Failure Protection (CBFP) (50BF)
106
Restricted Earth Fault / Cable End Differential (REF) I0 > (87N)
118
Thermal Overload Protection for Feeders T > (49F)
126
Arc Fault ARCI> (50ARC/50NARC)
144
Over Voltage U> (59)
151
Under Voltage U< (27)
155
Vector Jump (78)
162
Positive Sequence Over- and under Voltage U1>/< (59P/27P/47)
167
Neutral Voltage U0> (59N)
176
Over Power (32)
182
Under Power (37)
186
Reverse Power (32R)
190
Over- and under Frequency F>/< (81O/81U)
194
Rate of Change of Frequency (ROCOF) (81R)
200
Programmable Stage (99)
205
Motor Protection Module
217
Motor Status Monitoring (MST)
217
Thermal Overload Protection for Machines T
226
Motor Start / Locked Rotor Monitoring (LRC) I
255
Frequent Start Protection (FSP) N> (66)
265
Under Current I< (37)
270
Mechanical Jam Protectioni
274
Resistance Temperature Detectors (RTD) (49T)
280
Generator Protection Module
285
Machine Thermal Protection (49M)
285
Under Excitation Q< (40)
285
Under Impedance Z< (21G)
290
Voltage Restrained Overcurrent (51V)
292
Volts-Per-Hertz over Excitation (24)
296
Stator Earth Fault (64S)
302
Transformer Protection Module
307
Transformer Status Monitoring Functions
307
Differential Protection ID> (87)
313
Thermal Overload for Transformer (49T)
357
Volts-Per-Hertz over Excitation (24)
367
Control Functions
368
Setting Group Selection (SGS)
368
Object Control and Monitoring (OBJ)
376
Synchro-Check Function Δf, ΔU, Δφ
385
Auto-Reclosing 0  1 (79)
396
Cold Load Pick-Up (CLPU) (68)
427
Switch on to Fault (SOTF)
436
Voltage Regulator (90)
438
Monitoring Functions
461
Current Transformer Supervision (CTS)
461
Fuse Failure (VTS) (60)
471
Disturbance Recorder (DR)
474
Measurement Recorder
486
Circuit Breaker Wear -Monitor (CBW)
487
Total Harmonic Distortion Monitor (THD)
492
Alarm
498
Fault Locator (21FL)
500

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