Current Transformer, 10/5A, 20/5A, 40/5A to 75/5A

Current transformer current ratio can select 10/5A, 25/5A, 50/5A and 75/5A, accuracy classes can choose 0.5s, 0.2, 0.2s, rated frequency 50 Hz/60Hz, low cost and manufacturer direct sale.

SKU: CCHN-CT-30I

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Delivery date: 6-25 days

Overview

Cheap price AC current transformer with light weight, low price, fast response, high accuracy and good stability. The current ratio 10:5A, 25:5A, 30:5A and 75:5A are optional.

Note: The installation method of current transformer can be fixed by busbar and fixed by the bottom plate, suitable for installation in any direction. The primary conductor can be busbar or cable.

Specification:

Model	CCHN-CT-30I
Weight	1kg
Current Ratio (A)	VA Secondary load/ Burden (VA)			Cross-core Turn Number
Current Ratio (A)	0.2	0.5S	0.2S	Cross-core Turn Number
10/5	2.5	1.5	1.5	15
15/5	2.5	1.5	1.5	10
20/5	2.5	1.5	1.5	8
25/5	2.5	1.5	1.5	6
30/5	2.5	1.5	1.5	5
40/5	2.5	1.5	1.5	4
50/5	2.5	1.5	1.5	3
75/5	2.5	1.5	1.5	2
Rated Frequency	50/60Hz
Rated Test Voltage	3kV AC (1min)
Rated Short-Time Thermal Current (ith)	60 in
Rated Dynamic Current (idyn)	2.5 lth
Rated Voltage (Um)	0.66 kV AC
Continuous Overload (ld)	1.2 in
Operating Temperature	-10℃~50℃
Housing Self-Extinguishing Class	VO
Safety Factor	FS 5
Secondary Current	5A/ 1A
Bus Specification (mm)/Number	/

Dimension (unit: mm)

Model	Dimensions			Perforation size			Installation size
Model	W	H	D	a	e	φ	M	N
CCHN-CT-30I	62	78	45	32	11	22	40	57.5
CCHN-CT-3030I	85	102	50	32	11	28	/	57.5
CCHN-CT-40I	75	95	45	42	11	31	40	57.5
CCHN-CT-60I	102	130	45	61.5	21	45	42	57.5
CCHN-CT-60II	102	125	45	31	33	/	42	57.5
CCHN-CT-80I	118	140	45	82	11	52	60	57.5
CCHN-CT-100II	145	125	45	103	35	/	80	57.5

Tips: How to Prevent Current Transformer Burning up?

Add a watchdog breaker and avoid the power failure of whole feeder line caused by faults on branches, particularly, ensure that the branch breaker can trip correctly in case of single-phase grounding at the user side.
Connect the metering current transformer downstream the breaker, so as to guarantee that the breaker and lightning arrester operate correctly to remove faults when the transformer breaks down.
Strengthen the flashing test for user’s high voltage metering current transformer and lightning arrester (it shall not be more than 4 years according to regulations), find out the aging degree of current transformer and lightning arrester insulation as early as possible, replace timely to avoid power failure caused by burning out of metering current transformer.
Clean the user primary device regularly to reduce the occurrence of flashover, avoid insulation reduction.