GB/T 19212.11-2020 Active

The chapter of GB/T 19212.1-2016 is replaced by the following content:
This part of GB/T 19212 specifies the safety requirements for high-insulation level isolation transformers and isolation transformers with an output voltage exceeding 1000 V. Transformers with electronic circuits are also included in this part.
Note 1: Safety requirements include electrical, temperature, and mechanical aspects.
Unless otherwise specified, the following "transformers" include high-insulation level isolation transformers and isolation transformers with an output voltage exceeding AC 1000 V or DC 1500 V.
This part applies to stationary or mobile, single-phase or multi-phase, air-cooled (natural cooling or forced cooling), independent or matched dry-type transformers. Their windings can be encapsulated or non-encapsulated.
This part applies to transformers and power supply devices (linear) with an internal operating frequency not exceeding 500 Hz.
When this part is used in conjunction with GB/T 19212.17 Switching Power Supply Devices, it also applies to power supply devices with an internal operating frequency exceeding 500 Hz. When the requirements of the two standards are inconsistent, the more stringent standard shall prevail.
This part applies to rated supply voltages not exceeding AC 1000 V, and rated supply frequencies and internal operating frequencies not exceeding 500 Hz.
This part applies to rated outputs not exceeding:
——For single-phase transformers, 25 kVA;
——For multi-phase transformers, 40 kVA.
If the purchaser and the manufacturer have agreed otherwise, this part also applies to transformers with no restrictions on rated output.