Current Transformer Supplier

Willmall Current Transformer options support project procurement with configurable ratio, rated current, and output form, including split-core designs for retrofit.

Lzzbj9-10 Ctransformer12lzzbj9-10 C Single Phase Medium High Voltage 11kv Indoor CT Current Transformer

LZZBJ9-10C Single Phase 11kV Indoor Medium/High Voltage Current Transformer, Resin-Cast Pillar Type CT, Measuring & Protection, IEC Standard Mounting.

Lzzbj9-10 B Current Transformer Epoxy Cast Indoor Current Transformer

LZZBJ9-10B Indoor High Voltage Current Transformer 10kV, Measuring & Protection CT, IEC Standard, Stable Performance for Switchgear Installations.

Lzzbj9-10 a High Voltage Current Transformer Indoor 10kv High Voltage Current Transformer

LZZBJ9-10A Indoor High Voltage Current Transformer 10kV, Measuring & Protection CT, IEC Standard, Stable Performance for Switchgear Installations.

0.66kv 2500/5A CT Low Voltage Current Transformers for Protecting Electrical Energy

0.66kV 2500/5A Low Voltage Current Transformer (CT) for Electrical Energy Protection, High-Accuracy Measuring CT, IEC-Compliant, Busbar/Cable Mounting.

Split Core CT Current Transformer 5p10 Zero Open Loop High Burden Current Transformer for Reconstruct Power System

Split Core CT Current Transformer 5P10 Zero Open Loop High Burden, 100–5000A, 5A/1A Secondary, 0.72/3kV Rated, IEC44-1 Compliant.

Wholesale CT 0.5 15.0va 2000/5 Square Plastic Box Current Transformer for Energy Meter

Wholesale CT 0.5 Class 15VA 2000/5 Square Plastic Box Low Voltage Current Transformer for Energy Metering, 0.72/3kV Rated, IEC44-1 Compliant

Current Transformer 5p10 Zero High Output Zero Phase High Metering Current Transformer for AC Meter CT Current

5P10 Zero Phase High Output Current Transformer for AC Metering, 100–5000A, 5A/1A Secondary, 0.72/3kV Rated, IEC44-1 Compliant.

Metering Current Transformer Low Voltage CT 100/100mA Low Voltage High Quality Current Transformer for Electricity Meter

Metering Low Voltage Current Transformer CT 100/100mA, High-Quality CT for Electricity Meters, 0.72/3kV Rated, IEC44-1 Compliant, Accurate Measurement.

Open Type 250A/1A Split Core Current Transformer CT Factory Supplier

Open Type 250A/1A Split Core Current Transformer (CT), Low Voltage Clamp-On Design, 0.72/3kV Rated, IEC44-1 Compliant, Factory Supplier.

5A Black Red Low Voltage CT Metering Current Transformer for Electricity Meter

5A Black/Red Low Voltage Current Transformer (CT) for Electricity Metering, 100–5000A Primary, 0.72/3kV Rated, IEC44-1 Compliant, Accurate Metering.

Lzjm1-0.5 Low Voltage Current Transformer 3000/5A Accuracy Class 0.5 Low Voltage Split Core Current Instrument Transformer

LZJM1-0.5 Low Voltage Split Core Current Transformer 3000/5A, Accuracy Class 0.5, 0.72/3kV Rated, IEC44-1 Compliant, Clamp-On Installation.

0.66kv Current Transformer CT Low Voltage 0.5 Grade Current Ratio 1200/5A

0.66kV Low Voltage Current Transformer CT 1200/5A, Accuracy Class 0.5, Split Core Clamp-On Design, IEC44-1 Compliant, Easy Installation.

Wilmall Current Transformer Manufacturer

Willmall provides Current Transformer configurations to support procurement review, including selectable ratio, rated current, and output form for panel and retrofit projects.

Optional transformer ratio, rated current, and output form to align with metering or protection secondary requirements
Temperature-resistant and flame-retardant material specification for installation in electrical enclosures
Safety isolation design characteristic of instrument transformer applications between primary and secondary circuits
Open/split type Current Transformer option for retrofit on energized conductors during uninterrupted power supply upgrades
Documentation-oriented configuration approach intended to facilitate project acceptance and procurement review

What is a Current Transformer?

A Current Transformer is an instrument transformer that converts a primary AC current on a conductor into a scaled secondary current suitable for measurement or protection devices. The secondary circuit is intended for connection to meters, relays, or monitoring inputs based on the selected output form.

How does a Current Transformer ratio relate to the measured current?

Current Transformer ratio defines the relationship between primary current and secondary output. Selection of transformer ratio and rated current is based on expected operating current range and the input specification of the connected device to ensure correct scaling.

Which output form should be selected for meters or protection relays?

Output form selection depends on the secondary input requirement of the meter or relay. Engineering review typically confirms the required secondary signal type and the wiring interface so the Current Transformer output form matches the receiving terminal specification.

How is an open/split type Current Transformer used for retrofit work?

Open/split type Current Transformer designs allow installation around an existing conductor without disconnecting the conductor. Installation practice generally includes verifying conductor routing, ensuring mechanical closure of the split core, and connecting the secondary to the intended measurement or protection circuit.

When should temperature-resistant and flame-retardant construction be specified?

Temperature-resistant and flame-retardant construction is specified when Current Transformer installation occurs inside electrical enclosures or environments where elevated temperature and material performance requirements apply. Specification review typically aligns material characteristics with the project’s cabinet and site conditions.

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