FDZR2-4.0/12(-1W) type discharge coilDetailed product description：

The FDZR2-4.0/12/√ 3 (-1W) discharge coil is a fully enclosed structure made of (outdoor) epoxy resin casting, suitable for connecting with high-voltage parallel capacitors in power systems with a rated frequency of 50Hz and a rated voltage of 10kV and below. It enables the rapid release of residual charges after the capacitor bank is disconnected from the power system, effectively preventing the occurrence of closing overvoltage and overcurrent that may endanger equipment safety due to the capacitor still carrying charges when the capacitor bank is closed again, and ensuring the safety of maintenance personnel. This series of products comes with a secondary winding, which can be used for line monitoring, measurement, and secondary protection.

Technical parameters of FDZR2-4.0/12/√ 3 (-1W) discharge coil

System nominal voltage (kV)	ten
Rated voltage of primary winding (kV)	6.6/√3； 7.2/√3； 11/√3； 12/√3
Rated voltage of secondary winding (V)	100； 100/√3
Rated load of secondary winding (VA)	50VA
accuracy level	zero point five
Supporting capacitor bank capacity (Mvar)	0.5-4.0
insulation level	12/42/75kV
discharge time	At rated operating voltage, the residual voltage of the capacitor shall not drop to 50V for more than 5 seconds after power failure
Partial discharge level	≤5pC
Wiring method: Reduced level	Number of phases: single-phase	Frequency: 50Hz
Creepage distance: The external insulation creepage distance shall not be less than 31mm/kV

Note: If there are special requirements, they can be determined after consultation with our company.

Product outline drawing:

FDZR2-4.0/12 (-1W) discharge coil