Inputs - GE N60 Instruction Manual

2.2 SPECIFICATIONS
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu:
I = 0.1 to 0.25 pu:
I > 0.25 pu:
2
AC CURRENT
CT rated primary:
CT rated secondary:
Relay burden:
Conversion range:
Standard CT:
Sensitive Ground CT module:
0.002 to 4.6 × CT rating RMS symmetrical
Current withstand:
AC VOLTAGE
VT rated secondary:
VT ratio:
Conversion range:
Voltage withstand:
FREQUENCY
Nominal frequency setting:25 to 60 Hz
Sampling frequency:
Tracking frequency range:20 to 70 Hz
CONTACT INPUTS
Dry contacts:
Wet contacts:
Selectable thresholds:
Tolerance:
Contacts per common return: 4
Recognition time:
Debounce time:
Continuous current draw:4 mA (when energized)
CONTACT INPUTS WITH AUTO-BURNISHING
Dry contacts:
Wet contacts:
Selectable thresholds:
Tolerance:
Contacts per common return: 2
Recognition time:
Debounce time:
Continuous current draw:4 mA (when energized)
Auto-burnish impulse current: 50 to 70 mA
Duration of auto-burnish impulse: 25 to 50 ms
2-16
±0.01 Hz (when voltage signal is used
for frequency measurement)
±0.05 Hz
±0.02 Hz (when current signal is used for
frequency measurement)
1 to 50000 A
1 A or 5 A by connection
< 0.2 VA at rated secondary
0.02 to 46 × CT rating RMS symmetrical
20 ms at 250 times rated
1 sec. at 100 times rated
continuous 4xInom
Short circuit rating:150000 RMS sym-
metrical amperes, 250 V maximum (pri-
mary current to external CT)
50.0 to 240.0 V
1.00 to 24000.00Relay burden:< 0.25 VA
at 120 V
1 to 275 V
continuous at 260 V to neutral
1 min./hr at 420 V to neutral
64 samples per power cycle
1000 Ω maximum
300 V DC maximum
17 V, 33 V, 84 V, 166 V
±10%
< 1 ms
0.0 to 16.0 ms in steps of 0.5
1000 Ω maximum
300 V DC maximum
17 V, 33 V, 84 V, 166 V
±10%
< 1 ms
0.0 to 16.0 ms in steps of 0.5
N60 Network Stability and Synchrophasor Measurement System
2 PRODUCT DESCRIPTION
DEMAND
Measurements: Phases A, B, and C present and maxi-
mum measured currents
3-Phase Power (P, Q, and S) present
and maximum measured currents
Accuracy: ±2.0%
DCMA INPUTS
Current input (mA DC): 0 to –1, 0 to +1, –1 to +1, 0 to 5, 0 to 10,
0 to 20, 4 to 20 (programmable)
Input impedance: 379 Ω ±10%
Conversion range: –1 to + 20 mA DC
Accuracy: ±0.2% of full scale
Type: Passive
RTD INPUTS
Types (3-wire): 100 Ω Platinum, 100 & 120 Ω Nickel, 10
Ω Copper
Sensing current: 5 mA
Range: –50 to +250°C
Accuracy: ±2°C
Isolation: 36 V pk-pk
IRIG-B INPUT
Amplitude modulation: 1 to 10 V pk-pk
DC shift: TTL–Compatible
Input impedance: 50 kΩ
Isolation: 2 kV
REMOTE INPUTS (IEC 61850 GSSE/GOOSE)
Input points: 64, configured from 64 incoming bit pairs
Remote devices: 16
Default states on loss of comms.: On, Off, Latest/Off, Latest/On
Remote DPS inputs: 5
DIRECT INPUTS
Input points: 64
Remote devices: 16
Default states on loss of comms.: On, Off, Latest/Off, Latest/On
Ring configuration: Yes, No
Data rate: 64 or 128 kbps
CRC: 32-bit
CRC alarm:
Responding to: Rate of messages failing the CRC
Monitoring message count: 10 to 10000 in steps of 1
Alarm threshold: 1 to 1000 in steps of 1
Unreturned message alarm:
Responding to: Rate of unreturned messages in the ring
configuration
Monitoring message count: 10 to 10000 in steps of 1
Alarm threshold: 1 to 1000 in steps of 1

2.2.5 INPUTS

GE Multilin