# CG Power & Industrial Solutions 75 MVA 220/33 kV Substation Step-Down Power Transformers (110-330 kV)

> CG Power & Industrial Solutions 75 MVA 220/33 kV Substation Step-Down Power Transformers (110-330 kV) belongs to the Substation Step-Down Power Transformers (110-330 kV) category and is rated at 75 MVA with 220/33 kV primary/secondary voltage. Application: 220 kV Transmission and Substation Step-Down Switchyards. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-CGP-PWR-75MVA-220 | Brand: CG Power & Industrial Solutions | Category: Power & Energy Equipment / Transformers / High-Voltage & Transmission Power Transformers / Substation Step-Down Power Transformers (110-330 kV)

**Voltformer canonical:** https://voltformer.com/product/cg-power-75-mva-220-kv-high-voltage-power-transformer - markdown version: https://voltformer.com/product/cg-power-75-mva-220-kv-high-voltage-power-transformer.md

## Overview

CG Power & Industrial Solutions 75 MVA 220/33 kV Substation Step-Down Power Transformers (110-330 kV) is intended for 220 kV Transmission and Substation Step-Down Switchyards. Configured electrical data: 75 MVA, 220/33 kV primary/secondary voltage, 50 Hz, 3-phase, vector group YNd11 and short-circuit impedance 12%. Construction: Copper (Cu-Cu); cooling: ONAN/ONAF; loss class: IEC 60076 High Efficiency. These values support preliminary engineering selection; verify insulation levels, thermal limits, short-circuit duty, installation conditions and applicable standards against the manufacturer datasheet and the site study.

- **Application:** 220 kV Transmission and Substation Step-Down Switchyards
- **Target industries:** 220 kV National Transmission Grids, Large Industrial Plants & Steelworks, Utility-Scale Solar & Wind Power Plants
- **Brand:** [CG Power & Industrial Solutions](https://voltformer.com/brand/cg-power-industrial-solutions.md) - CG Power and Industrial Solutions delivers ultra-high voltage 765 kV power transformers, shunt reactors and medium-voltage switchgear across Asia, Europe and the Americas.
- **Category:** [Power & Energy Equipment](https://voltformer.com/catalog.md) / **Transformers** / [High-Voltage & Transmission Power Transformers](https://voltformer.com/category/power-transmission-transformers.md): 5 MVA–1000 MVA 110 kV, 154 kV, 380 kV, 500 kV and 1000 kV UHV AC/DC transmission and interconnection power transformers. / [Substation Step-Down Power Transformers (110-330 kV)](https://voltformer.com/category/power-transmission-transformers/substation-step-down-power-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 75 MVA |
| Primary / secondary voltage | 220 kV / 33 kV (±10 x 1.25% OLTC) |
| Frequency / phases | 50 Hz / 3-phase - YNd11 |
| Short-circuit impedance (Uk) | 12% |
| No-load loss P0 | 32.00 kW |
| Load loss Pk | 210.0 kW |
| Calculated efficiency (power factor = 1) | 99.68% at 100% load; 99.78% at 50% load |
| Loss class | IEC 60076 High Efficiency |
| Windings | Copper (Cu-Cu) - cooling: ONAN/ONAF - insulation: Class A (105°C) |
| Temperature rise | 65 K - sound pressure: 66 dB(A) |
| Mass and dimensions | 82000 kg - 6800×3800×5200 mm |
| Enclosure | IP55 - wheel gauge: 1800 mm |
| LI / AC withstand | 950 kV peak / 395 kV rms - partial discharge: 50 pC |
| Environment | -25°C / +45°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | 220 kV RIP Kondenser Bushing |

## Standards

- IEC 60076
- IEEE C57
- IS 2026

## Accessories

**Included:** Configuration-specific technical value, Buchholz Relay, Configuration-specific technical value, Magnetic Oil Level Indicator
**Optional:** Configuration-specific technical value, Fiber Optic Temperature Sensors

## Official sources

- https://www.cgglobal.com/categories/transformers

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

## Pricing & Logistics

- Pricing type: RFQ (On Request) - Indicative range: $780,000 – $920,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60076, IEEE C57, IS 2026. Verify applicability and conformity against the exact offered model and project jurisdiction.

## RFQ

Request a formal factory quotation via Voltformer RFQ:

```json
POST https://voltformer.com/api/v1/rfq
{"companyName":"Example Energy","email":"procurement@example.com","items":[{"skuOrId":"VF-CGP-PWR-75MVA-220","quantity":1}]}
```

Full catalog JSON: https://voltformer.com/agent-catalog.json - OpenAPI: https://voltformer.com/openapi.json