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SZR-278
The SZR-278 controller is designed to control the correctness of power lines operation and automatically switch the power supply of the facility into electricity.
The most important features of the SZR-278 are:
* simultaneous control of two power lines through the measurement of phase voltages on each phase in all power lines.
The control includes:
– control of the presence of phases and correctness of the voltage supply;
– control of the asymmetry of the phase voltages;
– control of the phase sequence.
* control of both contactors and motor-driven switches.
* control of the operation of the switchgear devices;
* monitoring of overcurrent protection activation;
* configurable parameters of controller operation:
– minimum acceptable supply voltage;
– times of the reaction of the controller to incorrect parameters of the power line and return to the correct parameters;
– delay between switching off one line and switching on the next one;
– phase sequence control;
– the power supply of the controller can be provided both via external N1 and N2 power lines, as well as dedicated 50÷350 V AC/DC input of guaranteed power supply;
– can be used in single-phase circuits.
* simultaneous control of two power lines through the measurement of phase voltages on each phase in all power lines.
The control includes:
– control of the presence of phases and correctness of the voltage supply;
– control of the asymmetry of the phase voltages;
– control of the phase sequence.
* control of both contactors and motor-driven switches.
* control of the operation of the switchgear devices;
* monitoring of overcurrent protection activation;
* configurable parameters of controller operation:
– minimum acceptable supply voltage;
– times of the reaction of the controller to incorrect parameters of the power line and return to the correct parameters;
– delay between switching off one line and switching on the next one;
– phase sequence control;
– the power supply of the controller can be provided both via external N1 and N2 power lines, as well as dedicated 50÷350 V AC/DC input of guaranteed power supply;
– can be used in single-phase circuits.
- Controlled lines
- 3 x 400 V + N (four-wire)
- The number of controlled lines
- 2
- Power supply voltage
- 24÷264 V AC
- Frequency
- 45÷55 Hz
- Maximum voltage
- 450 V AC
- Turn off time
- 1÷15 s
- Off time upper
- 0,3 s
- Line switching time
- 0,1÷5 s
- Generator starting time
- 5÷100 s
- Extinguish generator time
- 20÷200 s
- Switch-off time at power failure
- 0,1 s
- The time the main input was turned on after the voltage was restored
- 5÷600 s
- Number of relay outputs
- 4
- Maximum load current
- 16 A
- The maximum current of the contactor coil
- 2:00 AM
- Contact configuration
- 4 × NO/NC
- Lower voltage threshold
- 150÷210 V AC
- Upper voltage threshold
- 270 V AC
- Terminal
- pluggable terminal blocks 2,5 mm²
- Tightening torque
- 0,4 Nm
- Power consumption
- 4 VA
- Working temperature
- -20÷40°C
- Dimensions
- 6 modules (105 mm)
- Assembly
- on rail 35 mm
- Ingress Protection Marking
- IP20
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The SZR-278 controller is designed to control the correctness of power lines operation and automatically switch the power supply of the facility into electricity.