APPENDIX
369
NVA100X-D - Manual - 02 - 2016
8.7 APPENDIX B3 - Protective elements
Note *: when 87NHIZ is enabled, the 50N/51N/67N functions
can not be used with residual current (IE) measured directly
- Protective & control elements
21 Underimpedance
26 Thermal with Pt100 probes
27 Undervoltage
27V1 Positive sequence undervoltage
32P Directional active overpower
37 Undercurrent
37P Directional active underpower
40 Loss of field
46M-46G Negative sequence overcurrent
47 Phase reversal
49MG Thermal image
50/51 Phase overcurrent side H and side L
51LR(48)/14 Locked rotor
51V Voltage restraint overcurrent
50N1-2/51N1-2/87NHIZ* Residual overcurrent (sides1-2)/
High impedance restricted earth fault
50N(Comp)/51N(Comp) Calculated residual overcurrent
55 Minimum power factor
59 Overvoltage
59N Residual overvoltage
59V2 Negative sequence overvoltage
64REF Low impedance restricted earth fault
66 Maximum number of startings (Restart inhibition)
67N Ground directional overcurrent
67N(Comp) Ground directional overcurrent with calculated
residual current
81O/81U Overfrequency and underfrequency
87G-87M-87T Double slope biased differential for
generator/motor/transformer
BF Circuit breaker failure
74CT-74VT CT-VT supervision
74TCS Trip circuit supervision
METERING
- I
L1
..I
L3
,I
E
,....
- Oscillography
- Events & Faults log
COMMUNICATION
- Modbus RS485
- Modbus TCP/IP
- IEC61850
- IEC 870-5-103/DNP3
CONTROL & MONITORING
- TCS
- CB MONITORING,..
SYNCHRONIZING
- SNTP
- IRIG-B
U
L1
, U
L2
, U
L3
I
L1-H
, I
L2-H
, I
L3-H
I
L1-L
, I
L2-L
, I
L3-L
U
E
U
E
U
EC
U
E
U
EC
I
ECH
I
ECH
I
ECL
74CT
81U
50/51
81O
59
27V1
27
40
51V
46
49
47
37P
37
21
87G 87T
59V2
74TCS
BF
I
E-1
26
**
52
G
64REF
U
EC
I
ECH
I
ECL
50N/51N(Comp)
I
E-2
50N.2/51N.2
87NHIZ
50N.1/51N.1
59N
67N
67N(Comp)
74VT
74CT
50/51
I
ECH
I
ECL
I
L1-L
, I
L2-L
, I
L3-L
I
L1-H
, I
L2-H
, I
L3-H
74VT
81U
81O
59
27V1
27
46
49
55
37P
37
32P
87M
59V2
74TCS
26
52
M
40
51LR
50/51
66
74CT
74CT
BF
U
L1
, U
L2
, U
L3
U
E
U
E
U
EC
59N
*
87NHIZ
I
E2
I
ECH
I
ECL
50N/51N(Comp)
U
E
U
EC
67N
U
E
U
EC
I
ECH
I
ECL
67N(Comp)
50N.2/51N.2
50/51
NVA100X-D
NVA100X-D
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