GB/T 25301-2021 Active
GB/T 25301-2021 Resistance welding equipment—Transformers—General specifications applicable to all transformers
Abstract
This document specifies the technical requirements for the following types of transformers used in resistance welding equipment: -- Single-phase transformers for AC welding, typically operating at 50 Hz or 60 Hz; -- Single-phase transformers connected to rectifiers for DC welding, typically operating at 50 Hz or 60 Hz; -- Single-phase inverter transformers connected to rectifiers for DC welding, typically operating at 400 Hz to 2 kHz; -- Three-phase transformers connected to rectifiers for DC welding, typically operating at 50 Hz or 60 Hz. For the purposes of this document, the term "transformer" may refer to either a standalone transformer or a transformer connected to a rectifier (transformer rectifier unit). This document applies to Class I or Class II protective transformers that comply with IEC 61140. Note: The requirements of this document may be supplemented by other resistance welding transformer standards, such as ISO 22829 and ISO 10656.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 25301-2021 |
| CCS | Welding and cutting equipment |
| ICS | Welding equipment |
| Implement Date | 2021-12-01 |