LEMZKJH8-0.5 Type Open close Electronic Current TransformerDetailed product description：

1、 Overview (Description)
LEMZKJH8-0.5 type switchable electronic current transformer is mainly suitable for measuring current in power systems with rated frequency of 50Hz or 60Hz and rated voltage of 35kV and below. It is widely used in compact fully insulated ring main switch cabinets. This product complies with IEC60044-8:2002 and GB/T20840.8-2007 "Electronic Current Transformers" standards.



3、 Structure Introduction (Construction)
The LEMZKJH8-0.5 type open close electronic current transformer is an open close type, which adopts ABS engineering plastic shell and epoxy resin integrated casting molding. It has the characteristics of good insulation performance, beautiful appearance, and easy installation. This product is small in size, light in weight, and does not require maintenance. During installation, two semicircles are wrapped around the phase separated cable and clamped tightly with clamps, integrated with the cable, creating a harmonious and beautiful appearance. Especially its open close structure can be directly clamped onto the cable, achieving tool free installation without modifying the cable. The measurement range is wide, and the secondary open circuit does not generate high voltage. The secondary output is a small voltage signal with extremely low power consumption. There is no need to convert large signals into small signals, simplifying the error source and improving the stability and accuracy of the entire system.

4、 Technical data
1. The primary insulation of LEMZKJH8-0.5 switchable electronic current transformer is ensured by cables, and the product only assesses the insulation performance of the secondary winding. The secondary winding can withstand a 3kV power frequency withstand voltage to ground. (Because 2, Technical Data Form):

one	Rated primary current Rated primary current	20～630A
two	Rated secondary voltage (measurement level) Rated secondary voltage for measurement	1.5V，4V
three	Rated secondary voltage (protection level) Rated secondary voltage for protection	150mV, 225mV (core type coil)
four	Rated output digital quantity (measurement level) Rated digital output for measurement	0x2D41
five	Rated digital output for protection level	0x01CF/0x00E7
six	Measurement level accuracy level Accuracy class for measurement	0.2 level (class)
seven	Protection level accuracy level Accuracy class for protection	5P25 (iron core coil) 5P25(core type coil)
eight	rated frequency Rated frequency	50Hz (or 60Hz)
nine	rated load Rated burden	2kΩ，20kΩ,2MΩ
ten	Rated primary time constant Rated primary time constant	100mS
eleven	Rated wake-up time Rated wake-up time	0
twelve	ambient temperature Ambient temperature	－40℃～＋40℃

5、 Outline and installation dimension diagram

LEMZKJH8-0.5 Open close Electronic Current Transformer