The principle of current transformers is based on the principle of electromagnetic induction. A current transformer is composed of a closed iron core and winding. Its primary winding has very few turns and is connected in series in the line where the current needs to be measured. Therefore, it often has all the current flowing through the line. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuit. When the current transformer is working, its secondary circuit is always closed, so the impedance of the measuring instrument and protection circuit series coil is very small, and the working state of the current transformer is close to a short circuit. Product Advantage 1. current transformers are High safety: During the measurement process, the current transformer can effectively isolate the circuit, avoiding the possibility of direct contact with hazardous power sources and ensuring the personal safety of operators. 2. current transformers areHigh precision: Current transformers have high precision, making the current data measured through them very accurate, meeting the needs of various metering and protection operations. 3. current transformers are Long service life: By using high-quality materials and processes, the current transformer can maintain a high level of accuracy and reliability for a long time. 4. current transformers are Easy to install: The current transformer has a simple structural design, flexible and convenient installation method, and can adapt to the requirements of various lines and equipment. Technical Parameters 1.Insulation level:40.5/95/200kV 2.Power factor:cosφ=0.8(lag) 3. Rated secondary current: 5A or 1A 4.Rated frequency :50Hz or 60Hz 5.Ambient temperature：-5ºC~+40ºC 6.Weight: 80kg Technical Ratio Single variable ratio parameter

Rated current ratio(A)	Accuracy class	Rated output(VA)	Rated short-time	Rated Insulation
			thermal current(kA/S)	level(kA)
50	0.2S/0.5/10P10/10P10	15/15/30/30	3.6	7.2
60	0.2S/0.5/10P20/10P20	15/15/20/20	4.32	8.1
75			5.4	13.5
80			5.76	14.4
100			7.2	18
120			8.64	21.6
150			10.8	27
200			14.4	36
250			18	45
300			21.6	54
400			28.8	63
500			36	72
600			43.2	81
800	0.2S/0.5/10P30/10P30	15/15/20/20	57.6	120
1000-1600			72	144

Dual ratio parameter

Rated current ratio(A)	Accuracy class	Rated output(VA)	Rated short-time	Rated Insulation
			thermal current(kA/S)	leve(kA)
50-100	0.2S/0.5/10P10/10P10	15/15/30/30	7.2	18
60-120			8.64	21.6
75-150	0.2S/0.5/10P20/10P20	15/15/20/20	10.8	27
80-160			11.52	28.8
100-200			14.4	36
150-300			21.6	54
200-400			28.8	72
250-500			36	90
300-600			43.2	108
400-800			57.6	120
500-1000			72	144
600-1200
800-1600

Triple ratio parameter

Rated current ratio(A)	Accuracy class	Rated output(VA)	Rated short-time	Rated Insulation
			thermal current (kA/S)	level(kA)
50-75-100/5	0.2S/0.5/10P10/10P10	15/15/30/30	7.2	18
75-100-150/5			10.8	27
100-150-200/5	0.2S/0.5/10P20/10P20	15/15/20/20	14.4	36
150-200-300/5			21.6	54
200-300-400/5			28.8	72
300-400-500/5			36	90
200-400-600/5			43.2	108
400-600-800/5			57.6	120
500-600-800/5			57.6	120
600-800-1000/5			72	144

Outline and Dimension