SC(B) Epoxy-Resin Dry-Type Transformer
Vacuum-cast epoxy dry transformer, 30–2500 kVA: flame-retardant and self-extinguishing, +40 % output under AF forced-air cooling, long-term service at Class F 155 °C or Class H 180 °C.
- Excellent electrical performance with low partial discharge
- Strong lightning-impulse and short-circuit withstand
- High overload capability — AF forced-air cooling lifts output by 40 %
- Flame-retardant, self-extinguishing, maintenance-free, moisture- and damp-heat-proof for harsh environments
- High thermal class: continuous safe duty at 155 °C (Class F) or 180 °C (Class H)
A cleaner, more reliable approach to MV switching
The HP-ELS series replaces SF₆ with environmentally friendly insulating media while keeping the proven safety and performance utilities expect from gas-insulated switchgear.
Product Overview
The SC(B) series epoxy-resin dry-type transformer insulates its coils by integral vacuum casting in epoxy resin. It is widely used in power stations, power plants, industrial/mining enterprises, urban high-rises and user distribution substations. It complies with the GB/T 1094 series, GB/T 25446-2010 and GB 20052-2024.
Technical specifications
Headline ratings at a glance, followed by the full technical data sheet. Exact values are confirmed per project configuration.
| Parameter | Value |
|---|---|
| HV / LV voltage | 10·10.5 kV / 0.4 kV |
| Tap range / vector group | ±2×2.5 %·±5 % / Dyn11·Yyn0 |
| Short-circuit impedance | 4.0 / 6.0–8.0 % |
| 30 kVA — no-load / load | 130·105 / 640·685 |
| 100 kVA — no-load / load | 320·270 / 1665·1780 |
| 315 kVA — no-load / load | 665·570 / 3590·3850 |
| 630 kVA — no-load / load | 885·750 / 5365·5760 |
| 1250 kVA — no-load / load | 1420·1205 / 8720·9335 |
| 2500 kVA — no-load / load | 2450·2080 / 15445·16605 |
| Note | Class F / Class H by model · full range 30–2500 kVA |
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