ABB SPAU 341 C SPAU341C Voltage regulator
ABB SPAU 341 C SPAU341C Voltage regulator
The voltage regulator SPAU 341 C is intended
to be used for regulating the voltage of power
transformers with on-load tap-changers in distribution
substations. The connections required
for a simple voltage regulating function is the
measured phase-to-phase voltage U12 and the
raise and lower output contacts. If the line drop
compensation, the minimizing circulating current
or the overcurrent blocking feature is to be
used, one or more phase currents have to be
measured. If only one phase current is measured,
it is always connected to the terminals of
the phase current I L1, and the current to be
measured is selected with the software switches
SGF2/6 and SGF2/7 of the automatic voltage
regulating module SPCU 1D50.
Voltage input
Rated voltage Un, selectable 100 V (110 V, 120 V)
Terminal numbers X0/13-14
Continuous voltage withstand 2*Un
Rated burden of voltage input at Un <0.5 VA
Rated frequency according to order 50 Hz or 60 Hz
Current inputs
Nominal current In 1 A 5 A
Terminal numbers X0/1-3, 4-6, 7-9 X0/1-2, 4-5, 7-8
Thermal current withstand
- continuously 4 A 20 A
- for 10 s 25 A 100 A
- for 1 s 100 A 500 A
Dynamic withstand
- half-wave value 250 A 1250 A
Input impedance <100 mW <20 mW
Regulating contacts
Terminal numbers X2/1-2, 3-4
- Rated voltage 250 V ac/dc
- Continuous current carrying capacity 5 A
- Make and carry for 0.5 s 30 A
- Make and carry for 3 s 15 A
- Breaking capacity for dc, when the control circuit
time-constant L/R <40 ms, at 48/110/220 V dc
control circuit voltage. 5 A/3 A/1 A
Signalling contacts
Terminal numbers X2/5-6,7-8,9-10-11,14-15-16
- Rated voltage 250 V ac/dc
- Continuous current carrying capacity 5 A
- Make and carry for 0.5 s 10
- Make and carry for 3 s 8 A
- Breaking capacity for dc, when the control circuit
time-constant L/R <40 ms, at 48/110/220 V dc
control circuit voltage 1A/0.25A/0.15A
External control inputs
Terminal numbers X1/1-2,3-4,5-6,7-8,9-10,11-12,13-14
- External control voltage 18…250 V dc or 80…250 V ac
- Current drain of activated control input 2…20 mA
External mA input
Terminal numbers X1/15-16
- External control current 0…20 mA
- Input resistance 300 W
Supply voltage
Power supply module voltage range:
- SPGU 240 A1
Rated voltage Un = 110/120/230/240 V ac
Un = 110/125/220 V dc
Operative range U = 80…265 V ac/dc
- SPGU 48 B2
Rated voltage Un = 24/48/60 V dc
Operative range U = 18…80 V dc
Power consumption, regulator under
quiescent/operation conditions 10 W/15 W
SPCU 1D50
See the specific regulating module manual chapter "Technical data"
SPCN 1D56
See the specific regulating module manual chapter "Technical data"
Data communication
Transmission mode Fibre-optic serial bus
Coding ASCII
Data transfer rate, selectable 4800 or 9600 Bd
Optical bus connection module
- for plastic cables SPA-ZC 21 BB
- for glass fibre cables SPA-ZC 21 MM
Optical bus connection module powered from
the internal power supply
- for plastic cables SPA-ZC 17 BB
- for glass fibre cables SPA-ZC 17 MM
Optical bus connection module
for parallel operation
- for plastic cables SPA-ZC 100 BB
- for glass fibre cables SPA-ZC 100 MM
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