# Sieyuan Electric

> Sieyuan Electric provides comprehensive primary and secondary power transmission solutions including numerical protection relays, GIS switchgear, and substation automation.

> Headquarters: Shanghai, China - Warranty: 3 years - Sample models below: 4 (total catalog models: 4)

**Canonical:** https://voltformer.com/brand/sieyuan-electric - markdown: https://voltformer.com/brand/sieyuan-electric.md

## Overview

Sieyuan Electric provides comprehensive primary and secondary power transmission solutions including numerical protection relays, GIS switchgear, and substation automation. Request a formal factory quotation through Voltformer. Verify applicable standards, guaranteed ratings and declarations of conformity against the exact offered-model documentation and project jurisdiction. The IEC/EN 50708 series and EU Regulations 548/2014 and 2019/1783 apply only where the transformer and market fall within their legal scope.

## Official sources

- https://en.sieyuan.com/

- **Last reviewed:** 2026-09-13

## Sample Models

- [sieyuan-msr-green-24 - Sieyuan MSR GREEN-24](https://voltformer.com/switchgear/sieyuan-msr-green-24.md)
- [sieyuan-msc-green-24 - Sieyuan MSC GREEN-24](https://voltformer.com/switchgear/sieyuan-msc-green-24.md)
- [sieyuan-sypb-820 - Sieyuan SYPB-820 Transformer Differential Protection Relay](https://voltformer.com/product/sieyuan-sypb-820-transformer-differential-protection-relay.md)
- [sieyuan-sypb-810 - Sieyuan SYPB-810 Feeder Protection & Bay Controller](https://voltformer.com/product/sieyuan-sypb-810-feeder-protection-bay-controller.md)

## RFQ

Use the family-specific search/get tools in [the tool reference](https://voltformer.com/tool-reference.md) to choose an exact SKU or ID. RFQ submission requires authentication, a complete draft and explicit user confirmation; unknown project inputs must not be invented.