Single phase controller SZR-277

Single phase controller SZR-277


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.

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.

Power supply voltage85├Ě265 V AC
Supply voltage - generator230 V AC
Supply voltage - battery10├Ě12 V DC
Maximum voltage400 V AC
Maximum switching current of the internal contacts AC-116 A/250 V
Maximum switching current of the internal contacts AC-153 A/250 V
Turn off time1├Ě15 s
Off time upper0,3 s
Line switching time0,3 s
Time to qualify the line as good10 s
Generator starting time5├Ě120 s
Contact configuration3 ├Ś NO
Lower voltage threshold150├Ě210 V AC
Upper voltage threshold270 V AC
Hysteresis5 V
terminalscrew terminals 2,5 mm┬▓
Tightening torque0,4 Nm
Power consumption1,5 W
Working temperature-25 ├Ě 50 ┬░C
dimensions3 modules (52,5 mm)
Assemblyon rail 35 mm
Level of securityIP20

SZR-277 manual (159.15k)

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