Medium Voltage APG Epoxy Sleeve

The Medium-Voltage APG Epoxy sleeve is an insulating component manufactured using the Automatic Pressure Gelation (APG) process, widely applied in medium-voltage power equipment ranging from 3.6kV to 40.5kV.

It serves as a critical component in modern power transmission and distribution systems, guiding conductors through grounded barriers (such as transformer tank walls or switchgear partitions) while providing reliable insulation and mechanical support.

 

 

1. The product adopts epoxy resin material high insulation performance,better stability.

2. Bushing series is used for insulation and connection transition of completes with rated voltage of 12KV, 35KV and below.

3. Epoxy resin vacuum casting, the APG epoxy resin pressure gelatin, the liquid silicon gel formation, we always supplies the best quality products

4. It can be detected by X-ray device,thermal Cycle Test Machine.

5 It provides different specifications based on cusromer's requirement.

 

 

1.Installation is to be carried out indoors.

2.Altitude: ≤ 1000 meters.

3.Ambient temperature: ranging from +40°C to 5°C.

4.The relative humidity should not exceed 85% at an ambient temperature of +20°C.

5.There is no gas, vapor or dust that may severely affect the insulation of the contact box, and no explosive or corrosive substances.

 

 

Cable Bushing
Bated voltage	12kV	24kV
Rated current	1250A	1250A
Power frequency withstand voltage	42kV/1min	65kV/1min
Rated Impulse Withstand Voltage	75kV	125kV
PD	13.2kV≤5pC	26.4kV≤5pC

 

Insulation plug
Rated voltage	24kV	36kV
Power frequency withstand voltage	50kV/1min	70kV/1min
Rated Impulse Withstand Voltage	125kV	125kV
PD	20kV≤5pC	30kV≤5pC

 

Inside Cone Type Bushing Size 2(No Voltage Indicator/Voltage Indicator)
Rated voltage	40.5kV
Power frequency withstand voltage	95kV/1min
Rated Impulse Withstand Voltage	185kV
PD	45kV≤5pC
Inside Cone Type Bushing Size 3(No Voltage Indicator/Voltage Indicator)
Rated voltage	40.5kV
Power frequency withstand voltage	95kV/1min
PD	45kV≤5pC
Line Inlet/Outlet Insulator
Technical Parameter	Value
Power frequency withstand voltage	42/65 kV/1min
PD	1.1Ur≤3 pC
Flame Retardant Rating	V1 V0 Special Requirements
Glass Transition Temperature (Tg)	105±5 ℃
Lightning Impulse voltage	75 kV
Leakage Rate	1.0*10-⁹ Pa.m³/s
Capacitance	20±5 pF
Color	Red
Raw Material Parameter
Hydroscopicity	≤0.2 %
Dielectric Loss Tangent (tanδ)	0.01
Insulation Resistance	1.0*10¹⁴ Ω
Dielectric Breakdown Strength	≥18 kV/mm
Arc Resistance	182 S
Impact Strength	≥7 kj/m²
Bending Strength	≥110 N/mm²
Composite Bushing
Power frequency withstand voltage	42 kV/1min
PD	1.1Ur≤3 pC
Flame Retardant Ratin	V1 V0 Special Requirements
Glass Transition Temperature (Tg)	105±5 ℃
Lightning Impulse voltage	75 kV
Leakage Rate	1.0*10-⁹ Pa.m³/s
Capacitance	20±5 pF
Color	Red
Raw Material Parameter
Hydroscopicity	≤0.2 %
Dielectric Loss Tangent (tanδ)	0.01
Insulation Resistance	1.0*10¹⁴ Ω
Dielectric Breakdown Strength	≥18 kV/mm
Arc Resistance	182 S
Impact Strength	≥7 kj/m²
Bending Strength	≥110 N/mm²

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● Oil-Immersed & Dry-Type Transformers: Serving as incoming/outgoing line bushings on the high-voltage and low-voltage sides.

● Switchgear & GIS: Used as incoming/outgoing line interfaces on cabinet bodies or as bushing for wall crossings.

● Ring Main Units (RMUs): Used as cable termination bushings for cable connections.

● Compact Substations: Used for connections between the transformer and high-voltage compartment.

● Other Power Equipment: Such as capacitor banks, reactors, etc.

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