Bh0.66 Low Voltage Transformer Indoor CT

• Customization: Available
• Application: Instrument, Measuring and Protection
• Type: Current Transformer
• Model NO.: BH-0.66
• Phase: Single
• Operation Condition: Indoor
• Usage: Protection, Measurement
• Winding Form: Single Layer & Tightly Wound Type
• Insulating Medium: Epoxy Resin
• Installation: Busbar Type
• Magnetic Circuit Structure: Single Stage Type
• Voltage Transformation Principle: Electromagnetic Type
• Metering Class: 0.2s, 0.2, 0.5s, 0.5
• Rated Voltage: 660V
• Standard: IEC61869-2
• Rated Frequency: 50Hz or 60Hz
• Transport Package: Standard Export Box
• Specification: 380*240*470mm
• Trademark: Lokedl
• Origin: China
• HS Code: 8504311000
• Production Capacity: 50000 Pieces/Year

Product Description

Product Description

Low voltage indoor Current Transformer
· Indoor epoxy resin current transformer or indoor plastic casing current transformer
· Single phase, two phase or three phase.
· Rated voltage: 0.66kV
· Metering class for CT: 0.2S, 0.2,0.5, 0.5S
· Standard: IEC61869-2
· Type name: BH-0.66, MSQ-0.66, LMK1-0.66

This indoor dry type current transformer is used in 0.66kV, 0.75kV. power system, for measuring and protection.
It has been used in cubicle switchgear or in bay-installed switching stations.
The current transformer is made from high temperature indoor epoxy resin, amorphous alloy core for metering and high quality inside core for protection, primary and secondary use pure electrolytic copper.

Standard
IEC standards IEC 61869. IEEE C57.13

Standard Sizes
Model	Dimensions			Perforation Size			Installation Size				Installation Notes
	W	H	D	a	e	φ	A		B
							M	N	M	N
30I	60	79	36.5	31.5	11.5	23	32	58	40	57	A B C E
30*30I	75	98	43	31.5	11.5	-	45	58	52	66	A B C E
40I	75	98	40	42	11.5	31	45	58	52	66	A B C E
50I	81.5	98	40	51	11.5	37	45	58	52	66	A B C E
60I	101.5	126	40	62	21.5	46	45	58	50	69	A B C E
80I	116.5	137	45	81.5	14	51	60	58	-	-	A B E
100I	144	154	45	102	22	61	60	58	-	-	A B E

Detailed Photos

 

Product Parameters

 

Specifications	30I		30*30I		40I		50I		60I		80I		100I
Traverse Aperture	23		-		31		37		46		51		61
Max busbar/QTY	30*10/1		30*10/1		40*10/1		50*10/1		60*10/1 60*6/1-2		80*10/1 60*6/1-2		100*10/1 80*6/1-2
Accuracy	0.5	1	0.5	1	0.5	1	0.2	0.5	0.2	0.5	0.2	0.5	0.2	0.5
Rated primary/secondary current (A)	Rated Burden
15/5		2.5(5)		2.5(4)		2.5(5)
20/5		2.5(4)		2.5(3)		2.5(4)
25/5		2.5(3)		2.5(2)		2.5(3)
30/5		2.5(3)		2.5(2)		2.5(3)
40/5		2.5(2)		2.5(2)		2.5(2)
50/5		2.5(2)		2.5		2.5(2)
60/5		2.5(2)		2.5		2.5(2)
75/5		2.5	2.5	5		2.5
100/5		2.5	2.5	5		2.5
120/5		2.5	2.5	5		2.5
150/5	2.5		5	10	2	5
200/5	5		10		5
250/5	5		15		5		2.5	5
300/5	5		20		5		2.5	5		5		5
400/5	5		20		5		2.5	5		5		5
500/5					10		5	10	5	10	5	10
600/5					10		5	10	5	10	5	10
750(800)/5							5	10	5	10	5	10	15	10
1000/5							10	15	15	20	15	20	15	20
1200(1250)/5							10	15	20		20		20
1500/5									20		20		20
2000/5									20		20		30
2500/5											30		30
3000/5													30

 

Specifications	30I		30*30I		40I		50I		60I		80I		100I
Traverse Aperture	23		-		31		37		46		51		61
Max busbar/QTY	30*10/1		30*10/1		40*10/1		50*10/1		60*10/1 60*6/1-2		80*10/1 60*6/1-2		100*10/1 80*6/1-2
Accuracy	0.5	1	0.5	1	0.5	1	0.2	0.5	0.2	0.5	0.2	0.5	0.2	0.5
Rated primary/secondary current (A)	Rated Burden
15/1		1.5(4)		1.5(3)		1.5(4)
20/1		1.5(3)		1.5(2)		1.5(3)
25/1		1.5(2)		1.5(2)		1.5(2)
30/1		1.5(2)		1.5(2)		1.5(2)
40/1		1.5(2)		1.5		1.5(2)
50/1		1.5		2.5		1.5
60/1		1.5		2.5		1.5
75/1		2.5	2.5	5		2.5
100/1		2.5	2.5	5		2.5
120/1		2.5	2.5	5		2.5
150/1	5		10	15	2.5	5
200/1	5		10	15	5
250/1	5		10	15	5			2.5
300/1	5		10	15	5			2.5		5		5
400/1	5		10	15	5			5		5		5
500/1					10			10		10		10		10
600/1					10			10		10		10		10
750(800)/1					10		5	10	5	10	5	10	5	10
1000/1							10	15	10		10		10
1200(1250)/1							10	20	15		15		15
1500/1									15		15		15
2000/1									15		15		15
2500/1											15		15
3000/1													15

Certifications

 

Packaging & Shipping

 

Our Advantages

1. Premium Materials
High-Grade Cores: Precision-laminated silicon steel or nanocrystalline cores for minimal losses and high linearity.  
Robust Insulation: Epoxy resin designs ensure long-term stability in harsh environments.  

2. Superior Performance
Accuracy: Class 0.2/0.5 for metering, 5P/10P for protection, compliant with IEC 61869, 60044, IEEE, and ANSI standards.  
Wide Range: Supports 0.6kV-36kV systems, with custom ratios/frequency (50/60Hz).  
Low Thermal Rise: Optimized design reduces overheating, extending lifespan.  
EMC Immunity: Shields against electromagnetic interference for reliable signals.  

3. Service & Support
Custom Solutions: Tailored ratios, sizes, or connectors (e.g., DIN rail, IEC terminals).  
Global Certifications: IEC, CE, ISO, and local grid approvals.  
Lifelong Technical Aid: 24/7 support, installation guidance, and spare parts supply.  
Fast Delivery: Standard products in 2-4 weeks; expedited options for urgent needs.  

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Why Trust Us?
15+ years in power industry, serving 500+ clients worldwide.  
Rigorous testing 100% routine tests with reports provided.  
"Zero major failure" record since 2015.  

Need a quote or specs?
Contact us today for a responsive, no-obligation consultation.  
 

Our Team and exhibition

 

Our Workshop

 

 

FAQ

1. What customization options do you offer?
We provide tailored solutions based on your specific requirements, including adjustments to dimensions, performance specifications,
and other technical parameters. Contact us with your needs, and we'll confirm feasibility.  

2. How do I request a custom product?
Simply send us your detailed specifications (e.g., technical drawings, performance standards, or samples). Our team will evaluate and provide a solution within 2 business days.  

3. Are there minimum order quantities (MOQ) for customized products?  
MOQ depends on the complexity of customization. Standard products may have low MOQs, while highly specialized designs may require larger volumes. Discuss your needs with us for clarity.  

4. What's the lead time for custom orders?  
Lead times vary based on design complexity and order volume. Standard products ship in 2 weeks, while custom projects may take longer. We'll provide a timeline after reviewing your requirements.  

5. Can you meet international certifications/standards (IEC, CE, ISO, etc.)?
Yes, we comply with major international standards. Specify your certification requirements, and we'll ensure compliance.  

6. How do you ensure quality for custom products?
We conduct rigorous in-house testing and offer third-party inspections if needed. Prototypes can be provided for approval before mass production.  

7. What if I need technical support after purchase?
Our team provides lifelong technical assistance, including installation guides, troubleshooting, and spare parts support.  

8. Do you offer samples? Are they free?  
Samples are available for evaluation. Costs depend on product complexity-contact us for details.  

9. What's your payment terms for custom orders?
Standard terms include [T/T, L/C, etc.], with deposits required for custom projects. Terms are negotiable for long-term partnerships.  

10. How do you handle shipping and logistics?
We work with reliable global carriers (DHL, FedEx, sea freight, etc.) and handle customs documentation. Incoterms (EXW, FOB, CIF, CFR, etc.) can be negotiated.