20/24kV Outdoor Epoxy Resin Potential Transformer

Product Parameters:

MODEL:20-24 kV Outdoor Dry type Potential Transformer

· Outdoor epoxy resin potential transformer
· Single Phase or Two Phase
· Rated voltage:  15kV, 17.5kV, 20kV, 22kV, 24kV
· Metering class of PT: 0.2, 0.3, 0.5, 0.6
· Protection class of PT: 3P, 6P
· Standard: IEC, ANSI, GB
· Type name: JDZW-22, JDZXW-22, JDZXW-24

 General

This outdoor epoxy resin type potential transformer is used in 15kV, 17.5kV, 20kV, 22kV and 24kV power system, for measuring and protection. Phase to grounding voltage transformer with R3 of primary system voltage.
It has been used in outdoor pole mounted and transmission line.

Both phase to phase voltage transformer and phase to grounding voltage transformer are made from high quality ultraviolet-proof epoxy resin, high quality CRGO core for metering and protection, primary and secondary use pure electrolytic copper, both winding and core have shielding processing.

Standard
All UNISUN Electric instrument transformers are in conformity with IEC standards, and recommendations IEC 61869. Transformers in conformity with specific country standards can also be supplied. (IEEE C57.13, NBR6855).

Specification data she

TypeVoltage ratio(kV)Accuracy class and rated output(VA)Limit output (VA)
0.20.51

JDZW-22

22/0.1

2550100400
JDZW-2424/0.13050100400
JDZXW-2222000/√3/100/√3/100/34590100960
JDZXW-2424000/√3/100/√3/100/34590100960
  • Products can be customized by customer requirements, above data is standard data, customized data please contact us.
  • Products can be customized by customer requirements, above dimension may change, correct dimension please contact us.
 

Main Structure

A voltage transformer (PT) consists primarily of five main components: the core, the primary winding,the secondary winding, the insulation system,the casing and accessories. These components work together
to achieve voltage transformation

  • Iron Core — Magnetic Flux Path
  • Primary winding — parallel voltage
  • Secondary Winding — Inductive Output
  • Insulation—A Safety Barrier
  • Housing & Accessories

PT Core

 

Imported silicon steel sheet made of PT core, high quality insulation tape, high quality compression sponge, to ensure that resin shrinkage does not affect the performance of PT core, secondary use of high purity enameled wire.  

Primary winding of PT

 

Mechanized winding secondary winding, all wire uses high purity copper enameled wire, each layer uses high quality insulating paper, to ensure that the layer withstand voltage qualified, to ensure the stability of partial discharge test.

Compact size and design

Fully enclosed, epoxy-encapsulated construction eliminates the need for bulky oil tanks and insulating oil,It can be secured directly to outdoor open structures, column-mounted brackets or the roof of a high-voltage compartment in a pre-fabricated substation by installing a base plate or clamps.

High safety, no risk of fire or explosion

Features solid epoxy resin insulation, with no insulating oil or SF₆ gas:
there is no risk of oil leakage, flammability or explosion associated with oil-filled equipment; excellent flame retardancy ensures greater peace of mind during operation.

Virtually zero maintenance

No need for oil changes or recharging, and no leakage issues;
Excellent moisture resistance, ensuring maintenance-free operation throughout the entire service life under normal operating conditions.

Easy to install and low-cost

Lightweight, it can be moved and installed by a single person;
compared to oil-immersed units, both the initial investment and subsequent operating and maintenance costs are lower.

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