Qualité

ISO 9001:2008

Service

ODM ET OEM

Certifié

CE、TUV、CB、RoHS

Obtenir un devis

Current Transformer Supplier

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

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

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

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 (4)

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 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.
100 5A CT Indoor Low Voltage Current Transformer

100/5A CT Indoor Low Voltage Current Transformer

100/5A Indoor Low Voltage Current Transformer (CT), Split Core Design, 0.72/3kV Rated, IEC44-1 Compliant, Clamp-On Installation.
Bh 0 66kv 2500 5A Current Transformer CT Low Voltage Current Transformer

Bh-0.66kv 2500/5A Current Transformer CT Low Voltage Current Transformer

BH-0.66kV 2500/5A Low Voltage Current Transformer (CT), Split Core Clamp-On Design, Easy Installation, Reliable Measurement for Power Systems.
Dp Series Dp 23 Measuring and Protection Instrument Low Voltage Current Transfor (4)

Dp Series Dp-23 Measuring and Protection Instrument Low Voltage Current Transformer

DP-23 Split Core Low Voltage Measuring & Protection Current Transformer, Clamp-On Design, No Cable Disconnection, Easy Installation for Switchgear and Power Systems.
0 66 50 I Electric Current Transformer 750 5A Accuracy Class 0 5

0.66 50 I Electric Current Transformer 750/5A Accuracy Class 0.5

0.66kV 750/5A Electric Current Transformer, Accuracy Class 0.5, Low Voltage Measurement CT, GB/T20840 Compliant, High Creepage Distance.
Current Transformer Bh 0 66 20 5 30 5 50 5 75 5 100 5 150 5 Lmk 0 66 4 (3)

Current Transformer Bh-0.66 20/5 30/5 50/5 75/5 100/5 150/5 Lmk -0.66 40/5. SDH Current Meter

BH-0.66 / LMK-0.66 / SDH Low Voltage Current Transformer 20/5–150/5, 0.66kV Core CT for Energy Metering, GB/T20840 Compliant.
Small Current Transformer Bh 0 66 Low Voltage Current Transformer Meter (1)

Small Current Transformer Bh 0.66 Low Voltage Current Transformer Meter

Small BH Type 0.66kV Low Voltage Current Transformer for Energy Metering, Compact Core CT, GB/T20840 Compliant, High Creepage Distance.
Low Voltage Current Transformer Core Bh Type Current Transforme

Low Voltage Current Transformer Core Bh Type Current Transformer

BH Type Low Voltage Current Transformer Core, 0.5kV/0.66kV Measurement CT, GB/T20840 Compliant, High Creepage Distance, Reliable Metering Performance.
Single Phase Small Mini 0 5kv 0 66kv Manufacturers Electron (3)

Single Phase Small Mini 0.5kv 0.66kv Manufacturers Electronic Electric Power Current&Voltage Transformer

Single Phase Mini 0.5kV/0.66kV Electronic Power Current & Voltage Transformer, Low Voltage Measurement CT/VT, GB/T20840 Compliant, High Creepage Distance.
Split Core Current Transformer 36mm with 5 630A

Split Core Current Transformer 36mm with 5-630A

Split Core Current Transformer 36mm Window, 5–630A Range, Low Voltage Clamp-On CT, GB/T20840 Compliant, High Creepage Distance.
0 5kv 0 66K Split Core Low Voltage Current Transformer

0.5kv 0.66K Split Core Low Voltage Current Transformer

0.5kV/0.66kV Split Core Low Voltage Current Transformer, Clamp-On Window Type CT, GB/T20840 Compliant, High Creepage Distance, Easy Installation.
Electrical Low Voltage Current Transformer 5000A 5A Dx Type CE

Electrical Low Voltage Current Transformer 5000A/5A Dx Type CE

DX Series Low Voltage Current Transformer 5000A/5A (DX-20/DX-30/DX-40), 0.66kV, CE, Cable & Busbar Compatible, DIN Rail or Screw Mount.
Current Transformer CT for Energy Meters and Protections Lmk2 0 66 SDH 0 66

Current Transformer (CT) for Energy Meters and Protections Lmk2-0.66/SDH-0.66

LMK2-0.66/SDH-0.66 Current Transformer (CT) for Energy Meters and Protection, 100–5000A, 0.66kV, 50/60Hz, High-Accuracy Class 0.2s/0.5s.
Wilmall

Need in-stock items or urgent delivery?

Send us your requirements list, and we'll prioritize matching inventory and provide a quote and delivery time.

Contact our experts

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
S'adresser au service des ventes

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.