# Zhiguang 5000 kVA 35/0.69-0.69 kV Cascaded High-Voltage BESS Storage Transformer

> Zhiguang 5000 kVA 35/0.69-0.69 kV Cascaded High-Voltage BESS Storage Transformer belongs to the Battery Energy Storage (BESS) Transformers category and is rated at 5000 kVA with 35/0.69 kV primary/secondary voltage. Application: Grid-Scale Megawatt-Hour (MWh) Cascaded BESS Battery Storage Plants. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-ZG-BESS-5000-35 | Brand: Zhiguang Electric (Guangzhou Zhiguang) | Category: Power & Energy Equipment / Transformers / Renewable Energy Transformers (PV, Wind & BESS) / Battery Energy Storage (BESS) Transformers

**Voltformer canonical:** https://voltformer.com/product/zhiguang-5000-kva-35-0-69-0-69-kv-cascaded-high-voltage-bess-storage-transformer - markdown version: https://voltformer.com/product/zhiguang-5000-kva-35-0-69-0-69-kv-cascaded-high-voltage-bess-storage-transformer.md

## Overview

Zhiguang 5000 kVA 35/0.69-0.69 kV Cascaded High-Voltage BESS Storage Transformer is intended for Grid-Scale Megawatt-Hour (MWh) Cascaded BESS Battery Storage Plants. Configured electrical data: 5000 kVA, 35/0.69 kV primary/secondary voltage, 50 Hz, 3-phase, vector group Dyn11-yn11 and short-circuit impedance 7.5%. Construction: Copper (Cu-Cu); cooling: ONAN/ONAF; loss class: BESS 4-Quadrant High Efficiency Grade. 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:** Grid-Scale Megawatt-Hour (MWh) Cascaded BESS Battery Storage Plants
- **Target industries:** Utility-Scale Battery Parks, Frequency Regulation Facilities
- **Brand:** [Zhiguang Electric (Guangzhou Zhiguang)](https://voltformer.com/brand/zhiguang-electric.md) - Pioneering technology group in high-voltage STATCOM/SVG reactive power coupling transformers, grid-scale cascaded energy storage (BESS) transformers and smart grid energy management systems.
- **Category:** [Power & Energy Equipment](https://voltformer.com/catalog.md) / **Transformers** / [Renewable Energy Transformers (PV, Wind & BESS)](https://voltformer.com/category/renewable-energy-transformers.md): Multi-winding, harmonic-tolerant step-up transformers for solar (PV), wind and battery storage (BESS) plants. / [Battery Energy Storage (BESS) Transformers](https://voltformer.com/category/renewable-energy-transformers/bess-battery-storage-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 5000 kVA |
| Primary / secondary voltage | 35 kV / 0.69 kV (±2 x 2.5%) |
| Frequency / phases | 50 Hz / 3-phase - Dyn11-yn11 |
| Short-circuit impedance (Uk) | 7.5% |
| No-load loss P0 | 3.40 kW |
| Load loss Pk | 32.0 kW |
| Calculated efficiency (power factor = 1) | 99.3% at 100% load; 99.55% at 50% load |
| Loss class | BESS 4-Quadrant High Efficiency Grade |
| Windings | Copper (Cu-Cu) - cooling: ONAN/ONAF - insulation: Class A |
| Temperature rise | 65 K - sound pressure: 60 dB(A) |
| Mass and dimensions | 11800 kg - 2900×1950×2600 mm |
| Enclosure | IP55 - wheel gauge: 1070 mm |
| LI / AC withstand | 170 kV peak / 70 kV rms - partial discharge: 5 pC |
| Environment | -25°C / +40°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | Direct Copper Busbar Terminals (Busbar Integrated / IP00-IP31) |

## Standards

- IEC 60076-16
- IEC 60076
- TS EN 50708 series

## Accessories

**Included:** DC Bias Damping Circuit, DGPT2 Protection Relay, Electrostatic Shield
**Optional:** Ester Oil

## Official sources

- https://www.gzzg.com.cn/English/

- **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: $58,000 – $69,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60076-16, IEC 60076, TS EN 50708 series. 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-ZG-BESS-5000-35","quantity":1}]}
```

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