GE P743 - Protection Functions; Ethernet Data

Technical Data
P74x/EN TD/N
a7
MiCOM P74
1, P742, P743 (TD) 2-
9
TD
IEC 61850 Ethernet data
10 Base T/100 Base TX Communications
Interface in accordance with IEEE802.3 and
IEC61850
Isolation 1.5kV
Cable type: Screened twisted pair STP
Max length: 100m
100 Base FX Interface
Interface in accordance with IEEE802.3 and
IEC61850
Wavelength: 1300nm
Fibre: multi-mode 50/125µm or 62.5/125µm
Connector style: ST
Transmitter Optical Characteristics
(TA = 0°C to 70°C, VCC = 4.75 V to 5.25 V)
Parameter Sym Min. Typ. Max Unit
Output Optical Power
BOL: 62.5/125 µm,
NA = 0.275 Fiber
EOL
P
OUT
–19
–20
–16.8 –14
dBm
avg.
Output Optical Power
BOL: 50/125 µm,
NA = 0.20 Fiber EOL
P
OUT
–22.5
–23.5
–20.3 –14
dBm
avg.
Optical Extinction
Ratio
10
–10
%
dB
Output Optical Power
at Logic “0” State
P
OUT
(“0”)
–45
dBm
avg.
BOL – Beginning of life
EOL – End of life
Receiver Optical Characteristics
(T
A = 0°C to 70°C, VCC = 4.75 V to 5.25 V)
Parameter Sym Min. Typ. Max. Unit
Input Optical
Power Minimum
at Window Edge
P
IN
Min.
(W)
–33.5 –31
dBm
avg.
Input Optical
Power Minimum
at Eye Center
P
IN
Min.
(C)
–34.5 –31.8
dBm
avg.
Input Optical
Power Maximum
P
IN
Max.
–14 –11.8
dBm
avg.
Note: The 10BaseFL connection will no
longer be supported as IEC 61850
does not specify this interface
Reference conditions
Ambient temperature: 20 °C
Frequency Tracking Range
45 to 65 Hz
Breaker failure
Accuracy
Reset time
= 25 ms from:
start to [(TBF2 or TBF4) - 30ms]
= 15 ms from:
[(TBF2 or TBF4) - 30ms] to [TBF2 or TBF4]
±2 % or 10 ms whichever is greater
Thresholds: settings ±5 % or 10 mA Whichever
Is Greater
Protection functions
Global Settings (System Data)
Language: English/French/German/Spanish
Frequency: 50/60 Hz
Common conventional ratios (CU)
Primary basis current (virtual)
Ibp: 1000A
Current transformers (PU)
Phase CT Primary: 1…30.000A (step 1A)
Phase CT Secondary In: 1A or 5A
Phase Fault elements (CU)
Phase current slope adjustment
k2: 0.20…0.90 (step 0.1)
Phase differential current threshold
ID>2: 50A…30kA (step 10A)
Check Zone slope adjustment
kCZ: 0.00…0.90 (step 0.01)
Check Zone differential current threshold
IDCZ >2: 50A…30kA (step 10A)
Circuitry fault slope adjustment
ID>1: 10…500A (step 10A)
Circuitry fault threshold
k1: 0.00…0.50 (step 0.01)
Circuitry fault alarm timer
ID>1 tCF: 0.1…600.0s (step 0.1s)
Sensitive earth fault
Option for high neutral impedance:
Disabled/Enabled
Threshold for sensitive Earth fault with flowing
current control:
IbiasPh>Cur.: 50A…30kA (step 10A)
Residual current slope adjustment
kN2: 0.00…0.90 (step 0.01)
Residual differential current threshold:
IDN>2: 10A…30kA (step 10A)
Residual Check Zone current slope adjustment
kNCZ: 0.00…0.90 (step 0.01)
Residual Check Zone differential current
threshold:
IDNCZ>2: 10A…30kA (step 10A)
Circuitry fault slope adjustment
kN1: 0.00…0.50 (step 0.01)
Circuitry fault threshold:
IDN>1: 10…500A (step 10A)
Circuitry fault alarm timer
IDN>1 tCF: 0.1…600.0s (step 0.1s)