User`s guide

Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com V3-T9-231
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9.4
Metering Devices, Protective Relays, Software and Connectivity
Protective Relays
Current and Ground
Current Measurement.
●
Nominal currents: 1A/5A
●
Max. measuring range:
●
up to 40 x I
n
(phase
currents)
●
up to 25 x I
n
(ground
current standard)
●
up to 2.5 x I
n
(ground
current sensitive)
●
Continuous loading
capacity: 4 x I
n
/
continuously
●
Overcurrent proof:
●
30 x I
n
/10s
●
100 x I
n
/1s
●
250 x I
n
/10 ms
(1 half-wave)
●
Power consumption:
Phase current inputs
●
at I
n
= 1A S = 0.15 mVA
●
at I
n
= 5A S = 0.15 mVA
●
Ground current input
●
at I
n
= 1A S = 0.35 mVA
●
at I
n
= 5A S = 0.35 mVA
●
Frequency range: 50 Hz/
60 Hz ±10%
●
Terminals: Screw-type
terminals with integrated
short-circuiters (contacts)
Binary Output Relays
●
Continuous current:
5A AC/DC
●
Switch-on current:
25A AC/DC for 4s
●
Max. breaking current:
5A AC up to 125 Vac
●
5A DC up to 50V (resistive)
●
0.2A DC at 300V
●
Max. switching voltage:
250 Vac/300 Vdc
●
Switching capacity:
2000 VA
●
Contact type:
1 changeover contact
●
Terminals: Screw-type
terminals
Front Interface RS-232
●
Baud rates: 115,200 baud
●
Handshake: RTS and CT
●
Connection: 9-pole
D-Sub plug
RS-485
●
Master/Slave: Slave
●
Connection: 6 screw-
clamping terminals RM
3.5 mm (138 MIL)
(terminating resistors
internal)
Tolerances of the
Real-Time Clock
●
Resolution: 1 ms
●
Tolerance: <1 minute/
month (+20°C)
Measuring Accuracy
●
Max. measuring range: up
to 40 x I
n
(phase currents)
up to 25 x I
n
(ground
current standard)
●
Frequency range: 50 Hz/
60 Hz ± 10%
●
Accuracy: Class 0.5
●
Amplitude error if I < I
n
:
±0.5% of the rated value
●
Amplitude error if I > I
n
:
±0.5% of the measured
value
●
Amplitude error if I > 2 I
n
:
±1.0% of the measured
value
●
Resolution: 0.01A
●
Harmonics up to 20% 3rd
harmonic ±2% up to 20%
5th harmonic ±2%
●
Frequency influence
< ±2%/Hz in the range of
±5 Hz of the parameterized
nominal frequency
●
Temperature influence
<±1% within the range
of 0°C up to +60°C