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Split-Core Current Transformer SCTK671 Series High Accuracy for Electrical Fire Monitoring and Relay Protection

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Split-Core Current Transformer SCTK671 Series High Accuracy for Electrical Fire Monitoring and Relay Protection

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Delivery Time :	4~8 Weeks
Model Number :	SCTK671 Series
Payment Terms :	T/T
Price :	Negotiation
Supply Ability :	10000/MONTH
Certification :	RoHS
Brand Name :	Shinhom

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Product Details
Company Profile

Split-Core Current Transformer SCTK671 Series High Accuracy for Electrical Fire Monitoring and Relay Protection

The SCTK671 series split-core current transformer is designed for current measurement and monitoring in new or existing power distribution networks. Measuring range is 5A to 3000A, with output of 0-10V (AC) or 0-5A. The product uses a split-core structure that allows quick installation without disconnecting or removing cables or busbars. This significantly reduces installation cost and time. The secondary winding has a built-in precision parallel resistor, providing a safe low-voltage output. Epoxy encapsulation ensures excellent insulation performance and vibration resistance. The high-permeability material provides a wide measuring range (5%-130% of rated input). It is widely used in electrical fire monitoring, leakage fire prevention, electromagnetic relay protection, and microcomputer protection applications.

Features

Split core CT current transformer
Test range: 5 to 3000A AC input, output of 0-10V(AC) or 0-5A
Using epoxy resin filling and good seismic performance
Use punched way, easy to install
Using high permeability material, wide measurement range
Small volume, beautiful appearance generous, flexible use
It can save time and the installation costs

Applications

Electrical fire monitoring
Leakage fire prevention system
Electromagnetic relay protection
Microcomputer protection and so on.

Electrical Parameter

Frequency	50-400Hz
Rated Input	5A-3000A
Measuring range	5%In-130%In
Rated Output	0-10V(AC) or 0-5A
Ratio	≤ ± 0.2%
Phase angle	≤ ±10min
Dielectric strength	2.5KV/1mA/1min
Insulation Resistance	DC500V/100MΩmin

Mechanical Parameter

Case	PC /UL94-V0
Bobbin	PBT
Core	Silicon steel
Internal structure	Epoxy
Construction	Tie
Operating Temp	－25℃～＋75℃
Operating Humidity	≤85%
Output Connection	UL101522AWGWire(twinstedwire)2.5m

Type selection

P/N	Rated Input (A)	Output (mA/V)	Accuracy	Dimensions(mm)
				Ø	A	B	C	D	E	F	G	H	Ø1	Ø2
SCTK671A-025	5-400A (5,100,400A)	0-200mA 0-10V	0.2,0.5,1.0	25	80	75	22	56	73	53	21	17	5	5
SCTK671A-045	50-1000A (50,400,1000A)	0-500mA 0-10V	0.2,0.5,1.0	45	108	107	26	71	100	74	24	13	5	5
SCTK671A-065	100-1500A (100,1000,1500A)	0-500mA 0-10V	0.2,0.5,1.0	65	128	127	26	91	120	94	27	17	5	5
SCTK671A-080	500-2000A (500,1500,2000A)	0-500mA 0-10V	0.2,0.5,1.0	80	144	144	28	97	134	104	27	17	5	5
SCTK671A-100	800-3000A (800,2500,3000A)	0-600mA 0-10V	0.2,0.5,1.0	100	174	174	30	126	162	120	27	17	5	5

Notes: Product specifications can be customized

FAQ

Q: What is the function of the built-in precision resistor?

A: The secondary winding has a built-in precision parallel resistor. It converts the current signal directly into a safe low-voltage output (0-10V), eliminating the need for external sampling resistors. This simplifies installation, improves safety, and saves component costs and installation space.

Q: What applications can the ≤±0.2% ratio error meet?

A: The ±0.2% ratio error is a high-precision class. It can meet the requirements of applications with high measurement accuracy, such as electrical fire monitoring, relay protection, microcomputer protection, and industrial automation control.

Q: What are the advantages of epoxy potting?

A: Epoxy resin potting provides excellent insulation, moisture-proof, dust-proof, and corrosion protection, while also enhancing the product's vibration resistance. The completely enclosed structure ensures long-term stable operation of the transformer in various harsh environments.

Q: How to apply for samples? What is the lead time?

A: You can submit a sample application through our website or email. Please provide your company information and target model. Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks.

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