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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