NSQ Series current transformer,V0 Grade,Self-Extinguishing Casing
Feature
Base plate mounting: Designed for easy installation, suitable for use in various electrical equipment and power distribution systems, facilitating wiring and maintenance for users.
Low Cost: Compared to other types of current transformers, the NSQ series features optimized materials and manufacturing processes, offering a more competitive price and making it suitable for large-scale applications.
Wide Range of Rated Primary Current: This series of current transformers has a rated primary current range from 5A to 30000A, which can meet the application scenarios with different current requirements and is suitable for industrial, commercial and civil power systems.
High-precision measurement: The NSQ series current transformers have excellent linearity and stability, providing accurate current measurement and ensuring the safe and reliable operation of the power system.
Durability: Made of high-quality materials, it has good environmental resistance and anti-interference ability, making it suitable for working in various harsh environments.
Multiple Output Modes: Different output signals can be provided according to user needs, facilitating integration with various monitoring and control systems.
Safety: Designed to meet relevant safety standards, ensuring safe use under high current conditions and reducing the risk of electrical accidents.
Standard
IEC60044-1 GB1208-2006
Technical parameters
|
Rated Frequency |
50/60Hz |
|
Rated Test Voltage |
3kv AC.(1min) |
|
Rated short-time thermal current(Ith) |
60ln |
|
Rated dynamic current |
2.5lth |
|
Rated voltage (Um) |
0.72Kv AC. |
|
Continuous overload (ld) |
1.2ln |
|
Operating temperature |
-10°C~50°C |
|
Housing self-extinguishing class |
VO |
|
Safety factor |
FS 5 |
|
Secondary current |
5A/1A |
Scope of application
The five specifications of the NSQ series current transformers typically cover different application requirements and technical parameters.
Specification 1: Suitable for low-current applications, with a rated primary current range of 5A to 100A, suitable for monitoring small devices and low-power circuits.
Specification 2: Medium current applications, rated primary current range from 100A to 1000A, suitable for general industrial equipment and power distribution systems.
Specification 3: High current applications, rated primary current range from 1000A to 5000A, suitable for large industrial equipment and high load circuits.
Specification 4: Ultra-high current applications, with a rated primary current range of 5000A to 15000A, suitable for heavy industry and power transmission systems.
Specification 5: Extra-high current application, rated primary current range is 15000A to 30000A, suitable for high current applications such as power stations and substations.
These molded case current transformers are designed to meet diverse current measurement and monitoring needs, offering excellent durability and reliability, making them suitable for a wide range of industrial and commercial applications. Specific technical parameters and application scenarios can be selected based on actual requirements.

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Model |
Current ratio |
Burden |
|
|
0.5 |
1.0 |
|||
|
NSQ-30 |
50/5 |
- |
2.5 |
|
|
75/5 |
- |
2.5 |
||
|
100/5 |
1.5 |
3.75 |
||
|
150/5 |
2.5 |
5 |
||
|
200/5 |
5 |
5 |
||
|
250/5 |
5 |
5 |
||
|
300/5 |
5 |
5 |
||

![]() |
Model |
Current ratio |
Burden |
|
|
0.5 |
1.0 |
|||
|
NSQ-40 |
100/5 |
1.5 |
2.5 |
|
|
150/5 |
1.5 |
3.75 |
||
|
200/5 |
3.75 |
5 |
||
|
250/5 |
3.75 |
5 |
||
|
300/5 |
5 |
5 |
||
|
400/5 |
5 |
10 |
||
|
500/5 |
5 |
10 |
||
|
600/5 |
5 |
10 |
||

![]() |
Model |
Current ratio |
Burden |
|
|
0.5 |
1.0 |
|||
|
NSQ-55 |
100/5 |
1.5 |
2.5 |
|
|
150/5 |
2.5 |
3.75 |
||
|
200/5 |
3.75 |
5 |
||
|
250/5 |
3.75 |
5 |
||
|
300/5 |
5 |
5 |
||
|
400/5 |
5 |
10 |
||
|
500/5 |
5 |
10 |
||
|
600/5 |
5 |
10 |
||
![]() |
Model |
Current ratio |
Burden |
|
|
0.5 |
1.0 |
|||
|
NSQ-85 |
100/5 |
1.5 |
2.5 |
|
|
150/5 |
2.5 |
3.75 |
||
|
200/5 |
3.75 |
5 |
||
|
250/5 |
3.75 |
5 |
||
|
300/5 |
5 |
5 |
||
|
400/5 |
5 |
10 |
||
|
500/5 |
5 |
10 |
||
|
600/5 |
5 |
10 |
||
![]() |
Model |
Current ratio |
Burden |
|
|
0.5 |
1.0 |
|||
|
NSQ-125 |
100/5 |
1.5 |
2.5 |
|
|
150/5 |
2.5 |
3.75 |
||
|
200/5 |
3.75 |
5 |
||
|
250/5 |
3.75 |
5 |
||
|
300/5 |
5 |
5 |
||
|
400/5 |
5 |
10 |
||
|
500/5 |
5 |
10 |
||
|
600/5 |
5 |
10 |
||

JDG4-0.5 type voltage transformer,Accuracy class 0.5,designed for voltage measurement and relay protection in indoor AC circuits






