Energy Meter Current Transformer Lsf1 with 0.1 Accuracy Class

• Customization: Available
• Application: Electronic, Instrument, Electricity Meter
• Type: Current Transformer
• Model NO.: LSF1
• 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 are rectangular structures, which are mainly used for installation and use in bus bars of low-voltage distribution cabinets such as electrical fire monitoring. Epoxy resin potting has the characteristics of good seismic performance, excellent moisture-proof performance, high precision and stable operation. Different specifications can meet different busbar sizes.

 

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	A	B	C	D	E	F	G	Φ
LSF1-1025	100	25	125	53	19	150	140	6
LSF1-1434	140	34	172	71	24	202	186	5
LSF1-1834	180	34	215	71	24	245	230	6
LSF1-2247	220	47	250	85	24	280	265	6
LSF1-2647	260	47	293	85	24	325	308	6
LSF1-3050	300	50	360	110	30	390	375	6
LSF1-3250	320	50	380	110	30	410	395	6
LSF1-3650	360	50	420	110	30	450	435	6
LSF1-4250	420	50	480	110	30	510	495	6
LSF1-5050	500	50	560	110	30	590	575	6