ZFG92.93(SRG) Active power monitoring deviceDetailed product description：

Purpose:

The ZFG92.93 active power monitoring device is used to monitor the active power of the generator, and is used for reverse power or over power protection, and is also applicable to other similar places.

Relay model name:



Working Principle:
The device is based on a static principle and consists of printed circuit boards, transformers, current transformers, and other components. The device measures single-phase active current through a current transformer and converts it into an appropriate voltage through a phase sensitive rectifier. Send this DC voltage to the limit monitor and compare it with the adjusted reference value. During normal operation, contacts 8-9 open and 7-8 close. When the limit value is exceeded, the red LED lights up. At the same time, an adjustable delay circuit is activated. When the delay is over, the outlet relay acts, contacts 8-9 close, 7-8 open, and the green LED also lights up.

Main technical parameters of ZFG92.93 (SRG) active power monitoring device:
5.1 Rated voltage and frequency
a) AC 50Hz 380V or 100V;
b) AC 60Hz 440V or 110V.
5.2 Rated current: 1A or 5A.
5.3 The specifications of the device and the ordering code are shown in Table 1.
5.4 Action power
Reverse power: 1% to 20% rated current, over power: 60% to 140% rated current.
5.5 Action time
When 1.2 times the operating power is applied, the operating time of the device should be: reverse power of 1-6s or 2-12s; over power of 5-30s.
5.6 Power consumption
The power consumption of the voltage circuit of the device at rated voltage shall not exceed 4VA, and the power consumption of each phase of the current circuit at rated current shall not exceed 3VA.
5.7 Contact Performance
The contacts of the device can reliably disconnect a current of 10A and connect a maximum current of 20A when the AC voltage is not greater than 250V.
5.8 Dielectric Strength
The conductive parts in the device that are not electrically connected, as well as the conductive parts connected together, should be able to withstand an AC test voltage of 2.5kV (effective value) and 50Hz for 1 minute without insulation breakdown or flashover phenomenon for non-conductive metal parts (to ground).



Wiring diagram behind the relay:



Relay external dimensions and opening dimensions:



Ordering instructions:
6.1 Product model, name, and order code (see Table 1).
6.2 Order Quantity.

ZFG92.93(SRG) Active power monitoring device（No image available）