Lzzb12 Indoor Single Phase CT Fully Enclosed Post Types of Current Instrument Energy Meter Transformers

• Application: Instrument, Metering
• Type: Voltage Transformer
• Phase: Single
• Operation Condition: Indoor
• Usage: Protection, Measurement
• Winding Form: Single Layer & Tightly Wound Type
• Model NO.: LZZB12-10
• Insulating Medium: Epoxy Resin
• Installation: Extension Type
• Magnetic Circuit Structure: Single Stage Type
• Voltage Transformation Principle: Electromagnetic Type
• Insulation Level: 12/42/75kv
• Power Factor: Cosφ=0.8(Lag)
• Rated Secondary Current: 5A or 1A
• Rated Frequency: 50Hz or 60Hz
• Air Relative Site: Indoor
• Altitude: Should Not Exceed 1000m
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

Photos of product

General

This type of current transformer adopts epoxy-resin vacuum casting and a fully closed single-phase structure for indoor use, is applicable for power systems of rated frequency 50Hz or 60Hz and rated voltage up to and including 10kV, used for electric energy metering and current measurement.

It complies with the standards GB 20840.1 - 2010 Instrument transformers 
Part 1: General requirements, GB 20840.2 - 2014 Instrument transformers
Part 2: Additional requirements for current transformers, and JJG 313-2010 Instrument Current Transformers

Model And Meaning


Normal Usage Conditions

1. Altitude: should not exceed 1000m
2. Ambient temperature: -5ºC ~ +40ºC
3. Air relative site: Indoor.

Technical Parameters

1. Compliance Standards: GB/T 20840.1&3 and IEC61869-1&2
2. Insulation level:12/42/75kV
3. Power factor:cosφ=0.8(lag)
4. Rated secondary current: 5A or 1A
5. Rated frequency:50Hz or 60Hz
6. Weight: 11kg

Technical Ratio

Table 1: Transformation Ratio Parameters
 

Rated Primary Current (A)	Accuracy class	Rated output(VA)	Rated Short-Time Thermal Current(kA/S)	Rated Insulation Level (kA)
5	0.2S	10	0.36	0.9
10			0.72	1.8
15			1.08	2.7
20			1.44	3.6
25			1.8	4.5
30			2.16	5.4
40			2.88	6.3
50			3.6	7.2
60			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	90

Outline and Installation Dimensions

Eng. ADOFO MICHAEL ADJEI / BSc, MSc
Project Manager, Foreign Trade and Technology
Denggao Electric Co. Ltd
Head Office: No 208 Weiwu Lu, Economic Development Zone. Yueqing - China