The automatic switching device for standby power supply is suitable for the two-inlet single busbar wiring mode. It can realize the automatic switching of the standby power supply after the working power supply fails, and can also realize the automatic recovery after the working power supply is restored. It can be installed in small ring network cabinets such as solid cabinets and inflatable cabinets. The perfect design ensures that the device can operate reliably for a long time in harsh environments.

Technical indicators

◆ AC rated current: 5A or 1A (please specify when ordering);

◆ AC rated voltage: 57.7V or 100V (please specify when ordering);

◆ Operating frequency: 50HZ;

◆ Working power supply: AC/DC85-265V;

◆ Input power supply: internal 24V;

◆ Current measurement accuracy: 0.5 level;

◆ Voltage measurement accuracy: 0.5 level;

◆ Protection action export time: 1.5 times the fixed value protection action time is not more than 35ms;

◆ Output node: continuously connected to AC/DC220V, 5A current (pure resistive load).

Measurement and control function

◆ Telemetering: voltage, current, active power, reactive power, power factor, etc., which can be set to display primary or secondary values;

◆ Telesignaling: The device has 8-way telesignaling inputs;

◆ Event recording: The device can record 64 events including input position change, device self-test, protection action, etc., which will not be lost in case of power failure;

◆ Remote control: The device can remotely open and close the switch and call and modify the protection setting remotely through the remote background.

Protection function

◆ Incoming line I backup automatic switch

◆ Incoming line II backup automatic switch

◆ Reverse backup automatic switch

◆ No active-standby mode

Communication function