| Customization: | Available |
|---|---|
| Range of Primary Rated Current: | 30-1000A |
| Rated Frequency: | 50Hz or 60Hz |
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LZCG series Cast Resin Straight-Through Current Transformer is suitable for current measurement and microcomputer protection of electrical equipment in 10KV and 35KV AC power systems. It is widely used in not only compact fully insulated ring network switchgear such as ABB-Safe Ring/Safe Plus, Unstitch, RM6, SM6, Siemens 8DJ10/8DH10, Simosec, FBX, Fluokit, Omar Garbo GA, GAE; SEL TPS(Q); VEI Unifluorc; Eaton SVS/12 ring network, but also cable distribution boxes because of its small size, lightweight, operable and convenient installation. Conveniently, the transformer can be directly installed at the inlet and outlet cables.
New magnetic material is taken to be the core of the current transformer, which has high magnetic permeability, low saturation magnetization, and good stability. Therefore, the measuring accuracy is higher and the instrument security factor is lower. Since the high-quality silicon processed by advanced technology is taken to be the core of the protection windings, which assured the accuracy limit factor is higher.
The semicircular ring core and secondary windings are vacua poured by high-quality epoxide resin in the fire retardant plastic casing, which has the characteristic of being moisture-proof, stable performance, and dispensing with maintenance. Small size, lightweight, small footprint, fixed in the ring network switchgear cable. The cable can cross the current transformer through its internal poles quickly and uniformly.
The Cast Resin Straight-Through Current Transformer can be divided into several kinds according to the various current ratio, accuracy, and rated loads. The specific parameters are shown in the corresponding to each model parameter tables.
| Standards | IEC60044-1; IEC 61869-2; ANSI C57.13; NTC 2205; GB1208-2006 |
| Rated primary current | 30-1000A |
| Rated load | ≤20VA |
| Rated frequency | 50Hz or 60Hz |
| Rated secondary current | 5A or 1A |
| Rated short-time thermal current | 40kA, 1S |
| Rated continuous thermal current | 120%I1n |
| Secondary winding power-frequency voltage | 3kV, 1min |
| Instrument security factor | FS ≤10 |
| Dimensions (W×D×H) (mm) | φ45xφ120x65 |
| Weight (kg) | 2.1 |
| Operating temperature | -35°C to +55°C |
| Daily average temp | <+40°C |
| Altitude | <3500 meters |
| Condition | No existence of severely begrimed, erosive, and radioactive gas in the air. Permission of long-term operation under rated current. |
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