Inputs - GE C70 Instruction Manual

2.4 SPECIFICATIONS
REAL POWER (WATTS)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating:
REACTIVE POWER (VARS)
Accuracy at 0.1 to 1.5 x
2
CT rating and 0.8 to
1.2 x VT rating:
APPARENT POWER (VA)
Accuracy at 0.1 to 1.5 x
CT rating and 0.8 to
1.2 x VT rating:
CURRENT HARMONICS
Harmonics:
Accuracy:
HARMONICS: 1. f
1
reading or 0.15% of 100%, whichever is
greater
2. f
1
THD: 1. f
1
reading or 0.20% of 100%, whichever is
greater
2. f
1
AC CURRENT
CT rated primary:
CT rated secondary:
Relay burden:
Conversion range:
Standard CT:
Current withstand:
AC VOLTAGE
VT rated secondary:
VT ratio:
Relay burden:
Conversion range:
Voltage withstand:
2-22
±1.0% of reading at –1.0 ≤ PF< –0.8 and
0.8 < PF ≤ 10
±1.0% of reading at –0.2 ≤ PF ≤ 0.2
±1.0% of reading
2nd to 25th harmonic: per phase, dis-
(
played as a % of f fundamental fre-
1
quency phasor)
THD: per phase, displayed as a % of f
> 0.4pu: (0.20% + 0.035% / harmonic) of
< 0.4pu: as above plus %error of f
> 0.4pu: (0.25% + 0.035% / harmonic) of
< 0.4pu: as above plus %error of f
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 24000.00
< 0.25 VA at 120 V
1 to 275 V
continuous at 260 V to neutral
1 min/hr at 420 V to neutral
C70 Capacitor Bank Protection and Control System
VOLTAGE HARMONICS
Harmonics:
Accuracy:
HARMONICS: 1. f
reading or 0.15% of 100%, whichever is
greater
2. f
THD: 1. f
reading or 0.20% of 100%, whichever is
greater
2. f
FREQUENCY
Accuracy at
V = 0.8 to 1.2 pu:
I = 0.1 to 0.25 pu:
I > 0.25 pu:
1
1
1
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 PRODUCT DESCRIPTION
2nd to 25th harmonic: per phase, dis-
(
played as a % of f fundamental fre-
1
quency phasor)
THD: per phase, displayed as a % of f
> 0.4pu: (0.20% + 0.035% / harmonic) of
1
< 0.4pu: as above plus %error of f
1
> 0.4pu: (0.25% + 0.035% / harmonic) of
1
< 0.4pu: as above plus %error of f
1
±0.001 Hz (when voltage signal is used
for frequency measurement)
±0.005 Hz
±0.02 Hz (when current signal is used for
frequency measurement)

2.4.5 INPUTS

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
GE Multilin
1
1
1