Seeking help: Does anyone know what requirements dry transformers have regarding room height?
Thread Content
Which expert knows what the specific height should be between the epoxy resin transformer and the roof of the transformer room? Are there any standards or regulations?
You can ask the transformer manufacturer about this issue; generally, heat dissipation is taken into account when designing transformer rooms, so they should be well-ventilated. There are also **standard atlases that can be checked out.
Under normal circumstances, dry-type transformers are installed in distribution rooms, and their enclosure height is equal to that of low-voltage switchgear; therefore, a height of 3.5 meters or more is sufficient.
So what are the specific standards? In winter, the temperature of phase B in this dry-type transformer reaches over 80 degrees. The rated capacity of the transformer is 10,000 KVA, and its top is almost in contact with the roof. I would like to find out the relevant regulations so that corrective actions can be taken.
For reference: JGJ/T 16-92 Code for Electrical Design of Civil Buildings, Part 2 • Types and Arrangements of Substations, 4.5.2 High and low voltage distribution installations that do not use flammable oils, as well as non-oil-immersed power transformers and non-flammable oil-immersed capacitors, can be placed in the same room. Dry-type transformers should have a protection enclosure of at least IP2X. 4.6.4.4 The distance between indoor power distribution devices and the roof (excluding beams) should generally be at least 0.80 m. For details, refer to the specifications.
Thank you. I’m using this for an offshore oil platform where space is limited, and I’m not sure if this standard is suitable. The quality of construction these days is really poor!
Reply to 6# Hai Zhong Yue: It is suggested that you improve the ventilation in the transformer room, or add a few exhaust fans to the bulkhead; this should help solve some of the problems.
Thank you all! Transformers are equipped with built-in fans that start automatically at 90 degrees. I now realize that there must be some impact, but the relevant supervisors have asked me to find the electrical standards or specifications; with my limited resources, I really can’t find them for now.
You can take a look at http://www.chinabuilding.com.cn/book-69.html; it’s for reference only
Okay, thank you. I’ll look around again. Found it and wanted to share it with everyone.