Table of Contents
What Is Low Voltage Current Transformer？
LMK3(BH)-0.66 type low voltage current transformer is mainly used for indoor, for rated voltage up to and including 0.66 kV, rated frequency 50Hz accircuit for the electric current and electric energy measurement and relay protection. The product is a plastic shell type current transformer, widely used in complete sets of cabinets. Put oneself in another’s position, its installation method can be used, bus fixed, and base plate fixed installation method.d Standard: IEC 61869
Working Conditions of the Low Voltage Current Transformer
- Installation sites: Indoor
- Ambient temperature:-5~40'c
- Ambient humidity: 80%
- Altitude: s1000m
- Atmospheric conditions: no serious impurity in the atmosphere.
Main Technical Data of the Low Voltage Current Transformer
Note: Other special specification models are supplied according to user requirements
| Product chart | Current ratio (A) | Secondary load(VA) | Cross-core turn number | |||
| Class 0.5 | Class 0.5S | Class 0.2 | Class 0.2S | |||
| LMK3(B-H)-0.66 30 | 200/5 | 2.5 | 1 | |||
| 250/5 | 2.5 | 1 | ||||
| 300/5 | 5 | 1 | ||||
| 400/5 | 5 | 1 | ||||
| LMK3(BH)-0.66 50 | 400/5 | 5 | 5 | 5 | 5 | 1 |
| 500/5 | 5 | 5 | 5 | 5 | 1 | |
| 600/5 | 5 | 5 | 5 | 5 | 1 | |
| 750/5 | 10 | 10 | 10 | 10 | 1 | |
| 800/5 | 10 | 10 | 10 | 10 | 1 | |
| 1000/5 | 10 | 10 | 10 | 10 | 1 | |
| LMK3(BH)-0.66 60 | 500/5 | 5 | 5 | 5 | 5 | 1 |
| 600/5 | 5 | 5 | 5 | 5 | 1 | |
| 750/5 | 10 | 10 | 10 | 10 | 1 | |
| 800/5 | 10 | 10 | 10 | 10 | 1 | |
| 1000/5 | 10 | 10 | 10 | 10 | 1 | |
| 1200/5 | 10 | 10 | 10 | 10 | 1 | |
| 1500/5 | 10 | 10 | 10 | 10 | 1 | |
| 2000/5 | 10 | 10 | 10 | 10 | 1 | |
| LMK3(BH)-0.66 80 | 500/5 | 5 | 5 | 5 | 5 | 1 |
| 600/5 | 5 | 5 | 5 | 5 | 1 | |
| 750/5 | 10 | 10 | 10 | 10 | 1 | |
| 800/5 | 10 | 10 | 10 | 10 | 1 | |
| 1000/5 | 10 | 10 | 10 | 10 | 1 | |
| 1200/5 | 10 | 10 | 10 | 10 | 1 | |
| 1500/5 | 10 | 10 | 10 | 10 | 1 | |
| 3000/5 | 10 | 10 | 10 | 10 | 1 | |
| LMK3(BH)-0.66 100 | 800/5 | 10 | 10 | 10 | 10 | 1 |
| 1000/5 | 10 | 10 | 10 | 10 | 1 | |
| 1200/5 | 10 | 10 | 10 | 10 | 1 | |
| 1500/5 | 10 | 10 | 10 | 10 | 1 | |
| 2000/5 | 10 | 10 | 10 | 10 | 1 | |
| 2500/5 | 15 | 15 | 15 | 15 | 1 | |
| 3000/5 | 20 | 20 | 20 | 20 | 1 | |
| 4000/5 | 30 | 30 | 30 | 30 | 1 | |
| LMK3(BH)-0.66 130 | 1000/5 | 5 | 5 | 5 | 5 | 1 |
| 1200/5 | 10 | 10 | 10 | 10 | 1 | |
| 1500/5 | 10 | 10 | 10 | 10 | 1 | |
| 2000/5 | 10 | 10 | 10 | 10 | 1 | |
| 2500/5 | 15 | 15 | 15 | 15 | 1 | |
| 3000/5 | 20 | 20 | 20 | 20 | 1 | |
| 4000/5 | 30 | 30 | 30 | 30 | 1 | |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| LMK3(BH)-0.66_150 | 2000/5 | 10 | 10 | 10 | 10 | 1 |
| 2500/5 | 15 | 15 | 15 | 15 | 1 | |
| 3000/5 | 20 | 20 | 20 | 20 | 1 | |
| 4000/5 | 30 | 30 | 30 | 30 | 1 | |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| 7000/5 | 40 | 40 | 40 | 40 | 1 | |
| 8000/5 | 40 | 40 | 40 | 40 | 1 | |
| LMK3(BH)-0.66_180 | 3000/5 | 20 | 20 | 20 | 20 | 1 |
| 4000/5 | 30 | 30 | 30 | 30 | 1 | |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| 7000/5 | 45 | 45 | 45 | 45 | 1 | |
| 8000/5 | 40 | 40 | 1 | |||
| LMK3(BH)-0.66_200 | 3000/5 | 20 | 20 | 20 | 20 | 1 |
| 4000/5 | 30 | 30 | 30 | 30 | 1 | |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| 7000/5 | 40 | 40 | 40 | 40 | 1 | |
| 8000/5 | 40 | 40 | 1 | |||
| LMK3(BH)-0.66_220 | 4000/5 | 30 | 30 | 30 | 30 | 1 |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| 7000/5 | 40 | 40 | 40 | 40 | 1 | |
| 8000/5 | 40 | 40 | 40 | 40 | 1 | |
| LMK3(BH)-0.66_260 | 4000/5 | 30 | 30 | 30 | 30 | 1 |
| 5000/5 | 40 | 40 | 40 | 40 | 1 | |
| 6000/5 | 40 | 40 | 40 | 40 | 1 | |
| 7000/5 | 40 | 40 | 40 | 40 | 1 | |
| 8000/5 | 40 | 40 | 40 | 40 | 1 | |
Ordering Instructions
When the customer orders, they must provide the following information:
- The product model and window width
- Rated current ratio
- Rated output, and the corresponding accurate level
For example: order LMK3 (BH) – 0.66 type, window width is 80 mm, rated current than 1500/5 A, and rated output is 10 VA, accurate magnitude of 0.5 on the Richter scale transformer. Orders, code-named LMK3 (BH) 0.66 Φ 80 1500/5 1 turn 10 VA a 0.5 on the Richter scale are unlikely.
Why Choose ZHIMING's Low Voltage Current Transformer?
Certified Accuracy for Measurement & Protection
Designed for precision, this low voltage current transformer ensures reliable electric current and electric energy measurement while providing stable signals for relay protection in 50Hz circuits, forming the accurate foundation for system safety and billing.
Built for Standard Low-Voltage Applications
Operating at a rated voltage up to and including 0.66 kV, it is the ideal, standardized component for common low-voltage indoor AC circuits, ensuring compatibility and safety in standard power distribution environments.
Compact & Versatile Enclosure Design
The plastic shell type construction makes this current transformer lightweight, durable, and resistant to corrosion. Its compact design allows for widely used in complete sets of cabinets without occupying excessive space.
Unmatched Installation Flexibility
This low voltage current transformer offers multiple installation method options, including bus fixed and base plate fixed installation method. This flexibility, along with its indoor design, allows it to be put oneself in another's position in various cabinet layouts.s.
Internationally Recognized Compliance
Manufactured in accordance with Standard: IEC 61869, this low voltage current transformer meets stringent international benchmarks for performance and safety, guaranteeing global reliability and interoperability in relay protection and measurement systems.
FAQ
What is the primary function of the LMK3(BH)-0.66 low voltage current transformer?
This product is a plastic shell type current transformer. Its primary functions are electric current and electric energy measurement and providing signals for relay protection in AC circuits.
What are its key electrical specifications?
This low voltage current transformer is designed for indoor use in AC circuits with a rated voltage up to and including 0.66 kV and a rated frequency of 50Hz.
How and where is low voltage current transformer typically installed?
This low voltage current transformer is widely used in complete sets of cabinets. It offers versatile installation options, supporting both a bus fixed and a base plate fixed installation method, providing great adaptability within switchgear.
What makes its design user-friendly?
The plastic shell ensures a lightweight and robust design. Furthermore, its flexible installation method allows it to be easily integrated into different cabinet configurations, making it a practical choice for assemblers.
