General description
High quality silicon steel sheet metal slug with very high magnetic permeability as transmit magnetism material are used in the LMZK-11 current transformer, which has quite high survey precision and quite low meter security coefficient. It is suitable for measurement, signal collection and protection in power distribution lines, transformers, and electrical equipments. When it is used in microcomputer protection (RTU, FTU etc.) ,current loop’s impedance of microcomputer protection system is less than 50mΩ.
Configuration formats
High quality epoxy resin poured into inflaming retarding PVC ring Doss hell is adopted in two half cirque metal slug and secondary windings. It has many advantages, including small size and cubage, light weight, and dispense with maintenance. It is especially fit to be fixed on the incoming/outgoing cables of the high-tension switchgear, and the two half cirque of the current transformer encircle the split phase cable tightly and uniformly. It has two configuration formats of single ratio and double ratios and two Installation modes of plastic waistband and stainless steel waistband, and it is applicable to all the 35 mm2-500mm2 and 10kV cables.
Technical Parameter
Rated frequency: 50H or 60Hz
Power factor of load: cosφ=0.8(lag)
Rated secondary current: 5A or 1A;
Apparatus security factor: FS≤10;
Standards: IEC 60044-1, GB1208-2006(china), DL/T 725-2000 (china);
Permitting long running in condition of 1.2 multiple rated current;
P2 denotes the primary pole, S1 and S2 denote the secondary poles. P2 and S2 are homonymy poles (subtractive polarity).