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Current Transformers LZZBJ9-12/150b/2(Series - China Suppliers & Factory for Electrical Measurement

Discover our high-quality current transformers (CTs), essential electrical devices designed for accurate measurement of alternating current. Widely utilized in power systems, industrial automation, and electrical monitoring, our CTs effectively convert large currents into smaller, manageable outputs for instrumentation and protective devices. Manufactured in our state-of-the-art factory in China, we adhere to rigorous product execution standards, specifically GB20840.1-2010 and GB20840.2-201As trusted suppliers in the industry, we ensure that our current transformers meet the highest quality and performance benchmarks.

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Product Detail

Model and its Meaning

Summarize

The LZZBJ9-12/150b/2(4) series current transformers are suitable for power systems with a rated frequency of 50Hz or 60Hz and a rated voltage of 10kV, and are used for electric energy metering, current measurement and relay protection.

One of the most attractive features of the LZZBJ9-12/150b/2(4) current transformer is its maintenance-free operation. In industries where downtime can result in significant financial losses, the ability to deploy a transformer that requires no special maintenance is a significant advantage. This feature not only reduces operating costs but also improves overall power system reliability. Users can be confident that the LZZ-10 current transformer will perform consistently without the need for frequent inspection or repair, enabling a more streamlined approach to energy management.

Normal Service Condition

Installation Site Indoor

Ambient Temperature Max: 40°C | Min: -5°C | Daily avg ≤ 30°C

Atmospheric Conditions No severe pollution in the atmosphere

Technical Parameter

LZZBJ9-12/150b/2 Type Current Transformer — Technical Parameter Table

Product Model	Rated Primary Current	Accuracy Level Combination	Rated Output	Rated Short-term Thermal Current	Rated Dynamic Stability Current
LZZBJ9- 12/150b/2	5	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15	10/15	0.5	1.25
	10			1	2.5
	15			1.5	3.75
	20			2	5
	30			3	7.5
	40			4	10
	50			5	12.5
	75			7.5	18.75
	100			10	25
	150			15	37.5
	200			21	52.5
	300			24.5	61.25
	400			32	80
	500	0.2(0.5)/10P10 0.2(0.5)/10P15	10/15 10(15)/15	32	80
	600	0.2(0.5)/10P10 0.2(0.5)/10P15	10/15 10(15)/15	32	80
	800	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15	15/20 15/20 15/15 20/15	50	125
	1000			50	125
	1200			50	125
	1250			50	125

Note: Rated secondary current: 5A or 1A | Rated insulation level: 12/42/75kV

LZZBJ9-12/150b/4 Type Current Transformer — Technical Parameter Table

Product Model	Rated Primary Current	Accuracy Level Combination	Rated Output	Rated Short-term Thermal Current	Rated Dynamic Stability Current
LZZBJ9- 12/150b/4	5	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.2S/0.5/10P10/10P10	10/10/15 10/10/15 10/15/15 10/10/15 10/10/10	0.6	1.5
	10			1.2	3
	15			1.8	4.5
	20			2.4	6
	30			3.6	9
	40			4.8	12
	50			6	15
	75			9	22.5
	100			12	30
	150			21	52.5
	200			21	52.5
	300	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.2S/0.5/10P10/10P10	10/10/15 10/10/15 10/15/15 10/15/15 15/15/15	45	112.5
	400			45	112.5
	500			32	80
	600
	800
	1000	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.2S/0.5/10P10/10P10	10/10/20 10/15/15 10/15/15 10/15/20 15/15/20	50	125
	1200
	1250

Structure and Characteristics

This series of current transformers are of fully enclosed structure with epoxy resin casting, featuring excellent insulation performance and moisture-proof capability. The product features a compact structure, small size, light weight and easy surface cleaning. A terminal box is installed at the secondary output terminal, which is safe and reliable. There are grounding bolts and six installation holes for installation on the product base plate.

Frequently Asked Questions

1What is the rated voltage of the LZZBJ9-12/150b/2(4) current transformer?

The LZZBJ9-12/150b/2(4) series current transformers are designed for power systems with a rated voltage of 10kV, making them suitable for medium-voltage distribution and industrial power applications.

2What frequencies are supported by the LZZBJ9-12/150b/2(4) current transformer?

This series supports both 50Hz and 60Hz rated frequencies, making it compatible with power systems used in different regions and countries worldwide.

3What are the main applications of the LZZBJ9-12/150b/2(4) current transformer?

The LZZBJ9-12/150b/2(4) current transformers are primarily used for electric energy metering, current measurement, and relay protection in 10kV power distribution systems.

4What is the rated insulation level of this current transformer?

The rated insulation level of the LZZBJ9-12/150b/2(4) current transformer is 12/42/75kV, ensuring safe and reliable operation in the designated voltage class environments.

5Does the LZZBJ9-12/150b/2(4) current transformer require regular maintenance?

No. One of the key advantages of this series is its maintenance-free operation. The fully enclosed epoxy resin casting structure provides excellent insulation and moisture resistance, eliminating the need for frequent inspection or repair.

6What is the ambient temperature range for installing the LZZBJ9-12/150b/2(4) current transformer?

The transformer is designed for indoor installation with an ambient temperature range of -5°C to +40°C. The daily average temperature should not exceed 30°C to ensure optimal performance and longevity.