⑴ at the installation site can be divided into indoor type and outdoor type. 35kV and below, made more indoor type; 35kV or more is made of outdoor type.
⑵ Press phases can be divided into single-phase and three-phase, 35kV and above can not be made of three-phase.
⑶ can be divided by the number of winding double and three-winding voltage electric transformer , three winding voltage transformer in addition to primary and basic secondary side, there is a set of auxiliary secondary side for ground protection.
⑷ Press insulation can be divided into dry type, cast type, oil-immersed and inflatable. Dry-type voltage transformer simple structure, no fire and explosion hazard, but a lower dielectric strength, applies only to the following indoor 6kV devices; cast voltage transformer compact, maintenance side
It is suitable for 3kV ~ 35kV indoor power distribution unit; immersed voltage transformer insulation performance is good, can be used for more than 10kV outdoor power distribution unit; inflatable voltage transformer for SF6 fully enclosed appliances.
⑸ divided according to the principle, can be divided into electromagnetic voltage transformer, capacitor voltage power transformers and electronic voltage transformer.
没有评论:
发表评论