I. General Information
Shangwei Electricity has many years of experiences for producing zero sequence current transformers. The quality of our products is better than those specified in the national standard GB1208-1997 Current Transformers. The products are divided into integrated type and combined type. Engineering plastic casings are used for such transformers, and resin is poured into fully sealed packages. The products have nice appearances; they can be easily installed and they can save installation spaces. The various specifications can meet the requirements of all kinds of protective devices as well as all kinds of operation modes (neutral point grounding, neutral non-grounding, large current grounding, small current grounding and arc suppression coil grounding) in electric systems
II. Model Selection
Inner bore diameter (mm)
Combined type (Open type)
Zero sequence current transformer
Illustration of types:
A stands for that it is used for small current grounding line selection devices
B stands for that it is used for DD11/60 relays
C stands for that it is used for DL11/0.2 relays
D stands for that it is used for arc suppression coil, microcomputer protection and low resistance grounding systems
Note: The company can produce products with special bore diameters as per users’ requirements.
III. Data and Dimensions of Zero Sequence Current Transformers (see the table below):
IV. Ordering Instructions
Product models, names and order quantity shall be indicated;
Other special requirements shall be indicated.