Current Transformer Ct 200 300 500 800 5a

Wenzhou XiFa Electric Power Equipment Co., Ltd is a reliable factory to produce 10kv to 35kv current transformer and potential transformer, such as a current transformer ct 200 300 500 800 5a. the current ratio of 200/5, 300/5 500/5 and 800/5 are the regular type in the company. To ensure a in time delivery, Wenzhou XiFa keeps a certain mount of regular type current transformer and potential transformer on storage. Before delivery a current transformer ct 200 300 500 800 5a, the factory test must be undergo such as Withstand voltage test, partial discharge test, error calibration, and temperature rise test.

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Product Description

The current transformer ct with primary ratings of 200 A, 300 A, 500 A, and 800 A and a standard 5 A secondary output is designed for reliable current measurement and protection applications in 10 to 35 kv voltage level power systems.

Each current transformer ct 200 300 500 800 5a uses a precision wound copper conductor and a solid quality magnetic core to keep a excellent performance on accurate ratio across the entire operating range. The current transformer ct 200 300 500 800 5a is built to deliver stable secondary output under varying load conditions, to make them suitable for both metering and protection circuits.

The housing is manufactured from durable, flame retardant insulating material that offers excellent resistance to moisture and environmental stress. The compact design allows easy installation in switchgear panels, control cabinets, and power distribution boards.

Current Transformer Ct 200 300 500 800 5a

Technical Specification:

Type	Primary Rated Current (A)	Accuracy Class	Accuracy Class and Rated Output cosΦ=0.8				Shory-Time thermal Current (kA/S)	Rated Dynamic Current(kA)
Type	Primary Rated Current (A)	Accuracy Class	0.2 (s)	0.5 (s)	10P10	10P15	Shory-Time thermal Current (kA/S)	Rated Dynamic Current(kA)
LZZBJ9-12	20	0.2s/0.5 0.2s/10P 0.2/10P 0.5s/10P 0.5/10P	10	10	15	15	2	5
	30 (40)						3	7.5
	50 (60)						5	12.5
	75						7.5	18.5
	100						10	25
	150						15	37.5
	200						25	62.5
	300						31.5	80
	400 to 600						45	112.5
	750 to 1250						80	160

Current Transformer Ct 200 300 500 800 5a

Product FAQ:

Q: What does a CT ratio like 200/5A mean in a current transformer ct 200 300 500 800 5a?

A: in a current transformer ct 200 300 500 800 5a, a CT ratio of 200/5A means that when 200 amperes flow through the primary conductor, the secondary winding delivers 5 amperes. The same principle applies to other ratios: 300/5A, 500/5A, 800/5A, etc. The ratio ensures that large primary currents can be reduced to a standardized secondary value for safe measurement and protection.

Q: How do I choose the right CT ratio?

A: The CT ratio should be selected according to the maximum load current of the system. For example, if your feeder normally carries 180 A with occasional peaks up to 220 A, a 200/5A CT would be suitable. If the current is expected to reach 450 to 500 A, then a 500/5A CT would be more appropriate. The goal is to avoid both over sizing, which reduces accuracy at low load, and under sizing, which risks saturation.

Q: What accuracy classes are available for current transformer ct 200 300 500 800 5a?

A: For metering purposes, common classes include 0.2, 0.2S, 0.5, and 0.5S. For protection, typical classes are 5P10, 10P10, or 10P20. The required class depends on whether the CT will be used for revenue metering, general monitoring, or protection relays.

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