PM 1001606 000 07
Device handbook CENTRAX CU3000-CU5000
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Zero suppression, range limitations
The measurement of specific quantities is related to a pre-condition which must be fulfilled, that the
corresponding value can be determined and sent via interface or displayed. If this condition is not fulfilled,
a default value is used for the measurement.
Quantity
Condition
Default
Voltage
Ux < 1% Ux
nom
0.00
Current
Ix < 0,1% Ix
nom
0.00
PF
Sx < 1% Sx
nom
1.00
QF, LF
, tanφ
Sx < 1% Sx
nom
0.00
Frequency
voltage and/or current input too low
1)
Nominal frequency
Voltage unbalance
Ux < 5% Ux
nom
0.00
Current unbalance
mean value of phase currents < 5% Ix
nom
0.00
Phase angle U
at least one voltage Ux < 5% Ux
nom
120°
Harmonics U, THD-U
fundamental < 5% Ux
nom
0.00
1)
Specific levels depend on the device configuration
Power supply
via terminals 13-14
Measurement category: CAT III (300V)
Nominal voltage:
(see nameplate)
• CU3000
V1: 110…230V AC 50/60Hz / 130…230V DC ±15% or
V2: 24...48V DC ±15% or
V3: 110…200V AC 50/60Hz / 110…200V DC ±15%
• CU5000
V1: 100…230V AC / DC ±15% or
V2: 24...48V DC ±15%
Consumption:
depends on the device hardware used
≤ 20 VA, ≤ 8.5W (CU3000), ≤ 12W (CU5000)
Available inputs / outputs and functional extensions
Basic unit
•
1 digital input
•
2 digital outputs
Extensions
Optional modules
•
2 relay outputs with changeover contacts
•
2 bipolar analog outputs
•
4 bipolar analog outputs
•
4 passive digital inputs
•
4 active digital inputs
•
GPS connection module
•
2 failure current channels (residual or earth current)
•
CU3000: Up to 4 I/O extensions may be present in the device. Only one module can be equipped with analog outputs.
•
CU5000: Up to 2 I/O extensions may be present in the device.
