Lsy2 Electric Meter Current Transformer with 0.05 Accuracy Class

• Customization: Available
• Application: Electronic, Instrument, Electricity Meter
• Type: Current Transformer
• Model NO.: LSY1
• Phase: Three
• Operation Condition: Indoor
• Usage: Protection, Measurement, Electricity Meter
• Winding Form: Multilayer Honeycomb Type
• Insulating Medium: Epoxy Resin
• Installation: Busbar Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Capacitive Type
• Accuracy Class: 0.05, 0.1, 0.2
• Application Range: Energy Meter
• Max Current: 5A-300A
• Current Transformer Ratio: 1:1000, 1:2000, 1:2500
• DC Immunity: DC Immunity
• Material: Nano Crystalline, Ferrite Core
• Self Heating Testing: Pass Self Heating Testing
• DC Tolerance: Good DC Tolerance
• Standard: IEC62052-31
• Rosh: Rosh Compliant
• Transport Package: Carton/ Pallet
• Trademark: TOPRO
• Origin: China
• HS Code: 850431
• Production Capacity: 100000000PCS

Product Description

The residual current transformer is mainly used to detect all devices in the distribution circuit that pass through the core hole of the residual current transformer, the vector sum of the node currents, and transform them into the required signals according to the transformer ratio.

    

Residual current transformer is the key component of electric fire leakage detection and monitoring system and electromagnetic relay protection equipment, and its performance directly affects the reliability and stability of leakage protection and monitoring system.

        

    When installing the residual current transformer, try to stay away from the phase lines of other circuits to avoid the influence of large current and strong magnetism. In TN-S, TN-C-S, TN-C and TT systems, the phase line and neutral line of the loop must pass through the through hole of the residual current transformer at the same time. The PE line must not pass through the through hole of the residual current transformer, and any center line of each circuit must not be mixed. In TN-C system, PE line and neutral line are the same, so residual current protection device cannot be used and residual current transformer is not recommended. TN-C system can be changed to TN-C-S system, and then residual current transformer can be installed. Specific reference can be made to the following drawings.

 

The meaning of the model

Description

This series of residual current transformers is of circular structure, which is mainly used in indoor cable circuit environment such as electrical fire monitoring. Encapsulated with epoxy resin, it has the characteristics of good seismic performance, excellent moisture resistance, high precision, stable operation and convenient installation. The inner hole size is 25mm~150mm, and 6 models can be selected.

 

Technical data

 

Rated   Primary current	1A	1A	5A
Rated   secondary current	1mA	0.5mA	2.5mA
Continuous   thermal current:	2A	2A	10A
Accuracy   class	Class 0.5 / Class 0.2
Working   frequency	50-60HZ
Dielectric   strength	AC 3KV 1 minute
Insulation	DC 500V/1000MΩ
Environment   temperature	-15ºC-+45ºC

 

Outline dimensions and drawing (mm)

 

Specification and model	Outline dimension(mm)
Part number	Inner hole(Φ)	A	B	C	D	E	F
LSY1-25	25	55	59	45	4	21	29
LSY1-45	45	78	84	66	5	24	32
LSY1-65	65	98	104	86	5	24	32
LSY1-80	80	113	119	101	5	26	34
LSY1-100	100	135	139	123	5	26	34
LSY1-150	150	187	195	170	5	27	35