SZR-278
search
  • SZR-278
  • SZR-278
  • SZR-278

Single phase controller SZR-277

SZR-277, 5902431672465
The SZR-277 single-phase controller of backup switching is used to control the voltage of the single-phase power supply network and to switch the receiving line to the power supply from the generator in case of incorrect parameters of the main power supply line.
Functioning

If the mains voltage is within the specified range, the contact between terminals 2-7 is closed and the mains power is transferred to the receiving line. If the permissible voltage
parameters are exceeded, the contact 2-7 is opened and the supply line is disconnected from reception. When the main line is disconnected, the generator starts up and then, by closing the 3-9 contact, the power supply from the generator is transferred to the receiving line.If the power supply on the main line is restored and is within the specified range for 10 seconds, the contact 3-9 will be opened and the generator will be disconnected.

SZR-277
Power supply voltage
85÷265 V AC
Supply voltage - generator
230 V AC
Supply voltage - battery
10÷12 V DC
Maximum voltage
400 V AC
Maximum switching current of the internal contacts AC-1
16 A/250 V
Maximum switching current of the internal contacts AC-15
3 A/250 V
Turn off time
1÷15 s
Off time upper
0,3 s
Line switching time
0,3 s
Time to qualify the line as good
10 s
Generator starting time
5÷120 s
Contact configuration
3 × NO
Lower voltage threshold
150÷210 V AC
Upper voltage threshold
270 V AC
Hysteresis
5 V
Terminal
pluggable terminal blocks 2,5 mm²
Tightening torque
0,4 Nm
Power consumption
1,5 W
Working temperature
-25 ÷ 50 °C
Dimensions
3 modules (52,5 mm)
Assembly
on rail 35 mm
Ingress Protection Marking
IP20




5 other products in the same category