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LZCG930-10 Cheap low voltage Cast Resin Ring Core Current Transformer

Country/Region china
Categories Medium Voltage Current Transformer
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ICP License Issued by the Chinese Ministry
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LZCG930-10 Cheap low voltage Cast Resin Ring Core Current Transformer

LZCG930-10 Cheap low voltage Cast Resin Ring Core Current Transformer

General description
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 system. It is widely used in not only compact fully insulated ring network switchgears such as ABB-Safe Ring/Safe Plus, Unstitch, Schneider 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, light weight, operable and convenient installation. It is very convenient that 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 vacuum poured by high quality epoxide resin in the fire retardant plastic casing, which has the characteristic of moisture proof, stable performance and dispensing with maintenance.Small size, light weight, 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 several kinds according to the various current ratio, accuracy and rated loads. The specific parameters are showed in the corresponding to each model parameter tables.

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Outline drawing

Wiring diagrams

P1, P2 is primary polarity terminal, S1, S2 is secondary polarity terminal.
P2, S2 is homonymous terminals (subtractive polarity).


Technical parameters
StandardsIEC60044-1; IEC 61869-2; NTC 2205; ANSI C57.13; GB1208-2006
Rated primary current30-1000A
Rated load≤30VA
Rated frequency50Hz or 60Hz
Rated secondary current5A or 1A
Rated short-time thermal current40kA, 1S
Rated continuous thermal current120%I1n
Secondary winding power-frequency voltage3kV, 1min
Instrument security factorFS≤10
Mechanical parameters
Dimensions (W×D×H) (mm)60×155×60
Weight (kg)3.6
Operating conditions
Operating temperature-35°C to +55°C
Daily average temp<+40°C
Storage temperature-40°C to +70°C
Altitude<3500 meters
ConditionNo existence of severely begrimed, erosive and radioactive gas in the air. Permission of long-term operation under rated current.

Selection guide

PurposeMeasuring current transformerProtection current transformerDouble winding current transformer
Rated primary current (AMP)Accuracy class and rated load(VA)Accuracy class and rated load(VA)Composite accuracy class and rated load(VA)
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