Transformer Accessories — Full Range
Accessories for oil-immersed power transformers, supplied from ISO 9001-certified manufacturing partners in Shenyang, China. All models available for mixed loading in one shipment. Specification tables marked TBD are confirmed per order — send us your model number for exact data.
Buchholz Gas Relay (QJ series)
Double-float design for gas accumulation and oil surge protection. DN25 – DN80, for transformers 800 kVA and above.
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Pressure Relief Valve (YSF series)
Spring-loaded rapid-opening valve, Φ25–Φ130, opening pressure 35–138 kPa.
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Oil Level Indicator (YZF series)
Pointer type for conservator tanks, Ø100–Ø250 mm dial. Class 2.5, IP55, RS485 or 4–20 mA output.
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Moisture Absorber / Breather (YC series)
Silica-gel breather for conservator systems, 0.2–5 kg gel sizes. Gel type confirmed per order.
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Vacuum Butterfly Valve
Vacuum eccentric disc valve for oil line isolation — tank, conservator and radiator connections. DN40–DN200.
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Oil Flow Relay
Flow indicator with alarm contact for forced-oil cooling circuits (OFAF/ODAF transformers).
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Cooling Fan — Dry-Type Transformers
Cross-flow fan units for cast resin & VPI dry-type transformers. Selection checklist & retrofit guide.
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Conservator Rubber Capsule (Bladder)
Sealed conservator bladder that keeps oil and air apart. Matched to conservator dimensions and oil type.
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Sealed Gas Relay
Fully enclosed Buchholz relay for installations where the standard vented housing is not acceptable to the designer or end client.
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Complete Accessories Kit
Full bill of materials for one transformer — relay, valves, gauge, breather, fans — consolidated in one shipment. Configurator by rating.
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Complete Unit & Substation
Project-based supply of whole transformers, coordinated via certified partners with third-party inspection. Inquiry first.
Start a project →More Lines — Datasheet on Request
| Product | Typical use | Status |
|---|---|---|
| Sealed / fully enclosed gas relay | Where the vented construction fails document review, or the terminal box faces water, salt or dust | What to confirm → |
| Gas sampling device for gas relay | Gas collection & analysis from Buchholz relays | Specs on request |
| Stainless steel weather cover | Outdoor protection for gas relays | Specs on request |
| Drain (discharge) oil valve | Oil sampling and tank draining | Specs on request |
| Rubber capsule (conservator bladder) | Oil-air separation in fully sealed conservators | What to confirm → |
| Cooling fan for dry-type transformers | AN → AF cooling upgrade; export voltage/frequency on request | Selection guide → |
* Specification data shown as TBD is confirmed per order against factory datasheets. Contact us for the full dimensional chart PDF.
Maintaining a distribution substation? See how we consolidate spare parts for 33/11 kV distribution substations into one shipment. Not sure which line you need? Start from the applications pages — grouped by scenario and by region.
Can't find your part?
Send a photo of the nameplate or the old part — we identify and quote it.