Shanghai Huabang Industrial Business Network - Dry discharge coil

[Dry discharge coil]FDGZBX8-1.7,2.5,3.4-1(W)(G) series dry discharge coil

2026-6-20 21:58:39

FDGZBX8-1.7,2.5,3.4-1 (W) (G) series dry discharge coil

[Dry discharge coil]FDZR2-4.0/12(-1W) type discharge coil

2026-6-20 21:58:30

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

[Dry discharge coil]FDGE9-1W type fully enclosed outdoor dry discharge coil

2026-6-20 21:58:22

The FDGE9-1W fully enclosed outdoor dry discharge coil is an epoxy resin vacuum cast single-phase outdoor fully enclosed product, suitable for power systems with a rated frequency of 50 Hz and a rated voltage of 10kV and below. Connect in parallel with the high-voltage parallel capacitor bank, and when the capacitor bank is disconnected from the system, reduce the remaining voltage on the capacitor bank to a safe voltage within 5 seconds. During normal operation, the secondary winding can serve as a voltage indicator. If the user has special requirements, the residual voltage winding can also be included to provide relay protection.

Structural characteristics:
This type of discharge coil adopts a fully sealed structure with resin cast insulation for the iron core. The iron core is made of high-quality cold-rolled steel sheets and is cast together with the primary and secondary windings using advanced vacuum casting technology. It is an ideal product to replace oil immersed discharge coils due to its small size, light weight, small no-load capacity, strong overvoltage resistance, easy installation and use, and maintenance free.

Technical parameters:
Product execution standard: DL/T653-2006
Technical Specifications for Ordering Discharge Coils for Voltage Parallel Capacitors;
Load power factor: COS=0.8 (lag);
Surface creepage distance: greater than 300mm;

The technical parameters of FDGE9-1W fully enclosed outdoor dry discharge coil are shown in the following table:

Appearance dimensions:

FDGE9-1W fully enclosed outdoor dry discharge coil

[Dry discharge coil]FDGE35 type discharge coil

2026-6-20 21:58:13

FDGE35 discharge coil

[Dry discharge coil]FDGE11 type discharge coil

2026-6-20 21:58:05

FDGE11 type discharge coil

[Dry discharge coil]FDGE6 type semi enclosed indoor dry discharge coil

2026-6-20 21:57:56

FDGE6 semi enclosed indoor dry discharge coil

[Dry discharge coil]FDGE10 type fully enclosed indoor dry-type discharge coil

2026-6-20 21:57:48

FDGE10 fully enclosed indoor dry discharge coil

[Dry discharge coil]FDGZ(C) type fully enclosed outdoor dry discharge coil

2026-6-20 21:57:40

FDGZ (C) type fully enclosed outdoor dry discharge coil

[Dry discharge coil]FDGE9 type discharge coil

2026-6-20 21:57:30

The FDGE9 discharge coil is suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 10kV and below. It is connected in parallel with a high-voltage parallel capacitor bank. When the capacitor bank is disconnected from the system, it can reduce the remaining voltage on the capacitor bank to a safe voltage within 5 seconds. During normal operation, the secondary winding can serve as a voltage indicator. If the user has special requirements, the residual voltage winding can also be included to provide relay protection.
The product complies with the technical specifications for ordering discharge coils for voltage parallel capacitors (DL/T 653-1998).

Model and its meaning

Normal usage conditions
Installation location: Indoor.
Environmental temperature: maximum temperature of 40 ��; Minimum temperature -5 ��; The daily average temperature does not exceed 30 ��.
Atmospheric conditions: There is no severe pollution in the atmosphere.

Technical parameters of FDGE9 discharge coil

Product Model	rated voltage ratio (kV)	Accuracy level or combination of accuracy levels	rated output (VA)	discharge capacity (Mvar)	Rated insulation level (kV)
FDGE9/6.6/��3-1.7-1	6.6/��3/0.1	0.2(0.5)	20(50)	one point seven	7.2/32/60
FDGE9/6.6/��3-1.7-1	6.6/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE9/7.2/��3-1.7-1	7.2/��3/0.1	0.2(0.5)	20(50)
FDGE9/7.2/��3-1.7-1	7.2/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE9/11/��3-1.7-1	11/��3/0.1	0.2(0.5)	20(50)		12/42/75
FDGE9/11/��3-1.7-1	11/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE9/12/��3-1.7-1	12/��3/0.1	0.2(0.5)	20(50)
FDGE9/12/��3-1.7-1	12/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100

Rated insulation level: 0.5/3kV

Structure and Characteristics
This series of discharge coils adopts a pillar structure and is made of fully enclosed epoxy resin casting, which is resistant to pollution and moisture. It is also suitable for use in tropical regions. The transformer does not require special maintenance, only regular cleaning of surface dirt is needed. Install a wiring terminal box at the secondary output terminal of the transformer. There is a hole on the front and side of the terminal box to match the output terminal for safe and reliable wiring. There are grounding bolts and six mounting holes for installation on the product base plate.

Outline drawing and installation dimensions

Ordering Instructions
Please provide the following parameters when placing an order:
Product model.
The rated voltage is in kV.
Accurate level combination and rated output VA.
Discharge capacity Mvar.
The altitude of the environment is m.

[Dry discharge coil]FDGE8 type discharge coil

2026-6-20 21:57:22

Overview
The FDGE8 discharge coil is suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 10kV and below. It is connected in parallel with a high-voltage parallel capacitor bank. When the capacitor bank is disconnected from the system, it can reduce the remaining voltage on the capacitor bank to a safe voltage within 5 seconds. During normal operation, the secondary winding can serve as a voltage indicator. If the user has special requirements, the residual voltage winding can also be included to provide relay protection.
The product complies with the technical specifications for ordering discharge coils for voltage parallel capacitors (DL/T 653-1998).

Model and its meaning

Normal usage conditions
Installation location: Indoor.
Environmental temperature: maximum temperature of 40 ��; Minimum temperature -5 ��; The daily average temperature does not exceed 30 ��.
Atmospheric conditions: There is no severe pollution in the atmosphere.

Technical parameters of FDGE8 discharge coil

Product Model	rated voltage ratio (kV)	Accuracy level or combination of accuracy levels	rated output (VA)	discharge capacity (Mvar)	Rated insulation level (kV)
FDGE8/6.6/��3-1.7-1	6.6/��3/0.1	0.2(0.5)	20(50)	one point seven	7.2/32/60
FDGE8/6.6/��3-1.7-1	6.6/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE8/7.2/��3-1.7-1	7.2/��3/0.1	0.2(0.5)	20(50)
FDGE8/7.2/��3-1.7-1	7.2/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE8/11/��3-1.7-1	11/��3/0.1	0.2(0.5)	20(50)		12/42/75
FDGE8/11/��3-1.7-1	11/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100
FDGE8/12/��3-1.7-1	12/��3/0.1	0.2(0.5)	20(50)
FDGE8/12/��3-1.7-1	12/��3/0.1/0.1/3	0.2(0.5)/6P	20(50)/100

Rated insulation level: 0.5/3kV

Structure and Characteristics
This series of discharge coils is a semi enclosed epoxy casting type, with the iron core made of high-quality silicon steel sheets stacked together. The casting body contains a cylindrical concentric combination of primary and secondary coils. There are grounding bolts and four mounting holes for installation on the bottom clamp of the product.

Outline drawing and installation dimensions of FDGE8 discharge coil

Ordering Instructions
Please provide the following parameters when placing an order:
Product model.
The rated voltage is in kV.
Accurate level combination and rated output VA.
Discharge capacity Mvar.
The altitude of the environment is m.
Note: If users have special requirements, they can negotiate with our company to determine.

[Dry discharge coil]FDEG8 type discharge coil

2026-6-20 21:57:13

FDEG8 type discharge coil

[Dry discharge coil]FDGRC-20kV series outdoor dry discharge coil

2026-6-20 21:57:05

FDGRC-20kV series outdoor dry discharge coil

[Dry discharge coil]FDGR-20kV series outdoor dry discharge coil

2026-6-20 21:56:56

FDGR-20kV series outdoor dry discharge coil

[Dry discharge coil]FDGRC-35kV series outdoor dry discharge coil

2026-6-20 21:56:48

1�� Usage and Application
The FDGRC-35kV series outdoor dry-type discharge coil is a single-phase fully enclosed outdoor product used in power systems to connect with high-voltage parallel capacitors, allowing the capacitor bank to quickly release the charge after being disconnected from the power system. It is a necessary safety technical measure for parallel capacitors in substations, which can effectively prevent overvoltage and overcurrent that may endanger equipment safety when the capacitor bank is closed again due to the capacitor still carrying charge, and ensure the safety of maintenance personnel. This product comes with a secondary winding, which can be used for line monitoring, detection, and secondary protection.

2�� FDGRC-35kV series outdoor dry discharge coil model description

3�� Structure and performance characteristics
a) The product adopts an imported epoxy resin vacuum casting structure, achieving oil-free operation, completely eliminating oil leakage, environmental pollution, and other issues
Characteristics such as combustion.
b) The product structure is simple and easy to install and use.
c) The strengthened internal and external insulation provides the product with extremely high safety.
d) The maintenance of the product is simple, just wipe off the surface dust during power outage maintenance.
e) Using a special formula, the product is sturdy and reliable, with high mechanical strength, and can be used for a long time in various environments without cracking or breaking.

4�� Environmental conditions
1. Environmental temperature: -40 to 55 ° C
2. Altitude: not exceeding 2000m
3. Seismic resistance level: Under the action of an earthquake intensity of 8 degrees, it will not be damaged.
4. Installation location: No harmful gases, vapors, or conductive or explosive dust.

5�� Main technical performance indicators of FDGRC-35kV series outdoor dry discharge coil

6�� Connection method with capacitors

7�� Outline installation dimension diagram

FDGRC-35kV series outdoor dry discharge coil

[Dry discharge coil]FDGR-35kV series dry discharge coil

2026-6-20 21:56:39

Purpose and Scope of Application

After the parallel capacitor bank installed in the substation is out of operation, it must have a discharge device to release the internal charge. For the capacitor bank that implements automatic control switching, it is even more required to release its charge below the safe voltage within the specified time. Therefore, installing dedicated discharge coils is a necessary technical safety measure for parallel capacitors in substations.

Considering the safety and reliability of parallel capacitor banks and their supporting equipment during operation, it is recommended to use a widely adopted single star wiring method for capacitor banks. The discharge coils are directly connected in parallel with each phase capacitor, and the secondary windings are connected in an open triangle shape, forming an unbalanced voltage protection circuit with the protection relay as internal protection for the capacitor. If any component inside a capacitor of any phase in the capacitor bank is damaged or faulty, it is required that the unbalanced voltage protection can detect and activate the switch to promptly disconnect the capacitor bank from the power grid. At this time, the discharge coil must have a sufficiently high accuracy level to ensure the implementation of this protection performance

Structure and performance characteristics
1. The product adopts an imported epoxy resin vacuum casting structure, achieving oil-free and completely eliminating the characteristics of oil leakage, environmental pollution, and flammability.
2. The structure is simple and the installation and use are very convenient.
3. The product maintenance is simple, just wipe off the surface dust during power outage maintenance.
4. Strengthening the internal and external insulation makes the product highly safe.
5. Using a special formula, the product is sturdy and reliable, with high mechanical strength, and can be used for a long time in various environments without cracking or breaking.

Main technical parameters of FDGR-35kV series dry discharge coil

Connection method with capacitors

Ordering Notice
1. Rated voltage and frequency of the system
2. Voltage between the primary terminals of the discharge coil
3. Capacity of the capacitor matched between the primary terminals of the discharge coil
4. Secondary rated voltage, load and accuracy level of discharge coil

FDGR-35kV series dry-type discharge coil appearance and installation dimension diagram

FDGR-35kV series dry discharge coil

[Dry discharge coil]FDGZEX8 series discharge coil

2026-6-20 21:56:30

FDGZEX8 series discharge coil

[Dry discharge coil]FDGR Type 10KV Indoor Dry Discharge Coil

2026-6-20 21:56:22

FDGR type 10KV indoor discharge coil

[Dry discharge coil]FDGR type 10KV outdoor discharge coil

2026-6-20 21:56:13

FDGR type 10KV outdoor discharge coil