Lmk(BH) 0.66 Current Transformer 100II/120II

The Lmk(BH) 0.66 Current Transformer 100II/120II is a highperformance measuring instrument specially designed for indoor AC power distribution systems. It is mainly used for current measurement, electric energy metering and relay protection in power cabinets, distribution boxes and industrial power equipment. Adopting highquality silicon steel sheet iron core and highpurity pure copper coil, it ensures stable magnetic conductivity and low power loss. With flameretardant ABS shell, good insulation and strong antiinterference performance, it can operate safely and stably for a long time under rated conditions. It is an essential component for safe and accurate power monitoring.

Company Introduction

Committed to providing comprehensive services for industrial automation control. Satisfy the needs of all aspects of the power system with precise, reliable, energysaving, and environmentally friendly intelligent power distribution products. We adhere to strict quality control from R&D to production, ensuring each product meets international standards, and strive to be a trusted partner for global customers in the electrical measurement equipment industry.

New Quality Upgrade & More Durable

Our Lmk(BH) 0.66 Current Transformer 100II/120II has undergone a full quality upgrade. Strict selection of highgrade silicon steel sheet iron core and highpurity oxygenfree copper ensures stable magnetic conductivity and low heat generation. The flameretardant ABS shell is sturdy, corrosionresistant and agingresistant. Each product passes professional aging test, withstand voltage test and accuracy calibration before delivery. It can work continuously for a long time in harsh industrial environments, with higher safety and longer service life, and can withstand shortterm high temperature up to 75°C.

Structural Analysis

The LMK(BH)0.66 Current Transformer adopts a compact and reasonable structure, composed of six core components:

1.  Clear Engraving : Clearly marked model and polarity for easy installation identification.

2.  Pure Copper Coil : Uniform winding, low resistance, high conductivity and not easy to burn.

3.  Flameretardant Casing : Highstrength insulation shell, safe and antiaging.

4.  Mounting Hole : Standard mounting holes, supporting busbar fixation and base plate fixation.

5.  Protective Cover : Protects wiring terminals, dustproof and antimiscontact.

6.  Precision Screws : Firm and reliable, with lead seal holes for antitheft design.

Highquality Coils & Precise Measurement

Our current transformer uses highpurity pure copper coil and highpermeability silicon steel sheet iron core. It features professional winding technology, uniform turns, stable inductance and low power loss. With 0.5level high accuracy, it can accurately sense and convert primary current into standard secondary current for measurement and metering. Strong antiinterference ability ensures stable output even in complex electromagnetic environments, meeting industrialgrade measurement requirements.

Our Products vs. Other Products

Core Advantage

1.  Precision Work : Exquisite craftsmanship is applied to every detail—from the smooth matte casing to the precisely aligned terminal blocks. Highquality raw materials ensure consistent performance across all product batches.

2.  Pure Copper Coil : Copper wire with sufficient coils and highquality iron core, delivering lower resistance and stable performance, not easy to burn out.

Four Core Selling Points

• Flameretardant Casing : Highstrength, insulation, flameretardant, anticorrosion and shockresistant.

• Antitheft Electricity Design : Selfsealing with lead, more reassuring to use, preventing unauthorized disassembly and electricity theft.

• Compact Structure : Unrestricted installation scenarios, suitable for various distribution cabinets and equipment.

• Complete Specifications : Multiple models (100II/120II) and current ratios to choose from, meeting diverse application needs.

The Shell is Sturdy and Shockresistant

The shell of LMK(BH)0.66 Current Transformer is made of highstrength engineering plastic with fine surface treatment, smooth and burrfree, presenting a beautiful and elegant appearance. It has excellent shock resistance, compression resistance and mechanical stability, which can resist daily collision and vibration in industrial sites without deformation or damage. The material is also anticorrosion and antiaging, ensuring longterm stable use in complex working environments.

Flame Retardant ABS Material

Adopting highperformance flameretardant ABS engineering plastic, the shell has excellent flameretardant and insulation properties. Flameretardant materials can effectively prevent fires caused by high temperatures generated by instruments due to faults such as short circuits and overloads, thus better ensuring the overall safety of the power system.

Antitheft Electricity Design

Both the fixing screws and the top cover are equipped with small holes for adding lead seals, effectively preventing unauthorized disassembly and electricity theft, thereby enhancing the safety of use. Selfsealing with lead makes it more reassuring to use.

Easy to Install & Secure Wiring

Highquality terminal blocks are selected, neatly arranged, with good conductivity and safe to use. They are installed using a buckle method, making them less prone to loosening. Equipped with circular insulating pads, metal screws, wire crimping plates and mounting plates, the installation is convenient and the wiring is firm and reliable.

Product Dimensions

BH0.66 100II

BH0.66 120II

Complete Specifications

Good quality builds good reputation. LMK(BH)0.66 series current transformers have complete models and specifications, including 100II and 120II sizes. A variety of current ratios are available to meet the needs of different current measurement and metering. Suitable for lowvoltage power distribution cabinets, switch cabinets, energy metering boxes and industrial power equipment.

Product Parameters

Model Description

LMK(BH)0.66 I/II/III

• L: Current transformer

• M: Moulded Case

• K: Busbar cores

• (BH): Closed type

• 0.66: High voltage equipment (0.66kV)

• I/II/III: Design code

Authoritative Certification

The LMK(BH)0.66 Current Transformer has passed multiparty professional inspection and strict control, including rigorous testing by the Jiangsu Institute of Metrology, and obtained authoritative certifications such as MA and CNAS. Strict quality control is implemented throughout the production process—from raw material procurement to finished product delivery—to ensure each transformer meets national and international quality and safety standards. This reliable certification system provides a solid guarantee for bulk procurement and longterm cooperation with global customers.

Widely Used

LMK(BH)0.66 Current Transformer is a versatile monitoring solution widely applied across multiple industries:

• Substation : Realtime monitoring of grid current stability.

• Automation Equipment : Power parameter monitoring for industrial robots and CNC machinery.

• Flow production : Tracking power status to optimize production line efficiency and safety.

• Distribution cabinet : Core monitoring component for lowvoltage power distribution systems.

• Residential building : Monitoring threephase power supply for commercial and residential complexes.

• Department store : Ensuring stable power supply for elevators, lighting, and critical equipment.

FAQ 

1. What is the main use of this product?

It is mainly used for AC current measurement, electric energy metering and relay protection in 0.66kV and below power systems.

2. What accuracy level does it reach?

It adopts 0.5level high accuracy, which meets the requirements of industrial measurement and legal metering.

3. What models are available?

We provide 100II and 120II models, with a variety of current ratios to choose from.

4. Does it have antitheft function?

Yes, reserved lead seal holes can prevent unauthorized disassembly and electricity theft.

5. Is it suitable for outdoor use?

It is designed for indoor use, in dry, ventilated and noncorrosive gas environments.

6. What is the installation method?

It supports two installation methods: busbar fixation and base plate fixation, with complete installation accessories.