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0102030405

LZZBJ9‑12/175b/2(4) 12kV Indoor Current Transformer for MV Switchgear

Our current transformers are widely used in power monitoring, protection relays, metering equipment, and other fields, and are an indispensable component of power systems. Whether it is industrial, commercial, or domestic power management, our products can provide you with reliable current measurement solutions.
The product execution standards are GB20840.1-2010 and GB20840.2-2014.

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Product Detail

Dimensional Drawing

Model and its meaning

LZZBJ9-12-175b-2(4).jpg

Summarize

Current transformers must be operated within specified normal operating conditions. They should be installed indoors in a temperature-controlled environment. They are designed to operate within a temperature range of -5°C to 40°C, with an average daily temperature not exceeding 30°C. These conditions are crucial to ensuring the lifespan and reliability of the current transformer, as extreme temperatures can adversely affect its performance and accuracy.

Normal service condition

Installation site: Indoor.

Ambient temperature: Maximum air temperature 40℃ ; The minimum temperature is -5℃. The daily average temperature does not exceed 30℃.

Atmospheric conditions: There is no severe pollution in the atmosphere.

Technical parameter

LZZBJ9-12/175b/2 Type Technical parameter table of Current Transformer

Product model	Rated primary current	Accuracy level combination	Rated output	Rated short-term thermal current	Rated dynamic stability current
LZZBJ9- 12/175b/2	5	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15 0.2S/10P30	10/15 10/15 10/15 15/15 15/15	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			18	45
	200			21	52.5
	300	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15 0.2S/10P30	10/15 10/15 10/20 15/20 15/15	24.5	61.25
	400			32	80
	500
	600
	800	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15 0.2S/10P30	15/20 15/20 15/20 30/20 15/15	50	125
	1000
	1200
	1250
	1500	0.2/10P10 0.5/10P10 0.2/10P15 0.5/10P15 0.2S/10P30	15/20 15/20 20/20 30/20 15/15	63	157.5
	2000
	2500
	3000
	3150

LZZBJ9-12/175b/4 Type Technical parameter table of Current Transformer

Product model	Rated primary current	Accuracy level combination	Rated output	Rated short-term thermal current	Rated dynamic stability current
LZZBJ9-12/175b/4	5	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	10/10/20 10/10/15 10/10/15 10/15/15 10/15/15 10/10/15/15	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			18	45
	200			21	52.5
	300	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	10/10/20 10/10/20 10/15/15 10/15/20 15/15/15 10/10/15/15	24.5	61.25
	400			32	80
	500			32	80
	600	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	10/10/20 10/10/15 10/10/15 10/15/15 15/15/15 10/10/15/15	32	80
	800		10/10/20 10/10/15 10/10/15 10/15/15 15/15/15 10/10/15/15	50	125
	1000	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	10/10/30 15/15/20 15/20/20 10/15/15 15/15/20 10/10/15/15	50	125
	1200
	1250
	1500			63	157.5
	2000			63	157.5
	2500	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	15/15/30 15/15/20 15/20/20 15/15/20 15/20/15 10/10/15/15	63	157.5
	3000	0.2/0.2/5P10 0.2/0.5/5P15 0.2/0.5/5P20 0.2/5P10/10P15 0.5/5P10/10P20 0.2S/0.5/5P30/5P30	15/15/30 15/15/20 15/30/20 15/15/20 15/20/15 10/10/15/15	63	157.5
	3150		15/15/30 15/15/20 15/30/20 15/15/20 15/20/15 10/10/15/15	63	157.5

Rated secondary current: 5A or 1A, rated insulation level: 12/42/75kV.

Structure and characteristics

This series of current transformers utilizes a fully enclosed epoxy resin cast structure, exhibiting excellent insulation and moisture resistance. Its compact design, small size, and light weight make it easy to clean and maintain. The secondary terminals are equipped with a terminal block for safety and reliability. The baseplate is equipped with a grounding bolt and six mounting holes for flexible installation.