Hall Effect Closed Loop Current Sensor Split Core Current Transmitter for DC AC Current

In the electrical systems always exists the possibility of having shutdowns due to over currents or short circuits produced by operation mistakes,ambient conditions,lack of maintenance or atmospheric discharges.

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Product Introduction

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Round type leakage detection residual current transformer

S/N: LO-ZRCT-XX

Product overview:

The LO-ZRCT-XX series residual current transformers are primarily used in low-voltage distribution systems such as 380V and 660V, or in densely packed drawer cabinets, to continuously monitor and detect residual currents at installation nodes in corresponding circuits. The outer shell of this series is made from environmentally friendly flame-retardant ABS engineering plastic, and it uses high magnetic permeability nanocrystalline soft magnetic material. Combined with a reasonable structural design and rigorous production processes, the product features high precision, good balance performance, small size, high insulation strength, strong impact resistance, and easy installation, making it reliable and stable for indoor use.

Additionally, the structural design incorporates customer feedback, with the fixing feet designed to be retractable into corresponding slots before transport and installation. This prevents damage to the fixing feet before installation, reducing the risk of product failure, and also helps lower packaging and transportation costs. This series includes 11 different models, suitable for monitoring residual currents in cable circuits or copper busbar circuits, with a minimum detectable leakage current of less than 5mA and accuracy meeting or exceeding the national standard GB14287.2. The balance characteristics can be customized according to usage requirements. The color of the product casing can be customized to meet different color scheme requirements specified by customers.

Features:

Resin casting process, excellent waterproof and moisture-proof performance
It has strong overload capability and can be overloaded 50 times the rated current for a long time if necessary.
Excellent balance characteristics, small size products meet the detector alarm threshold requirement of 20mA
High precision: precision level 0.5/1.0/3, optional compact design, small size

Structure:

678

S/N	Name	Main features
1	Secondary terminal block	For output signal connection
2	Fixing tube	Made of brass or ABS plastic, used to connect the two parts of the transformer housing during assembly.
3	PCB for terminal connector	Hidden beneath the terminal block, to connect the output signal wires terminals and clamping diode
4	Clamping diode	According to the customer's technical specifications, the output signal is clamped to the required voltage
5	Insulation layers of core	The structure used to protect the iron core and prevent the enamel-coated wires of the winding from being damaged.
6	Core	Highly permeable nanocrystalline soft magnetic materials
7	Fixing part	Produced from flame-retardant ABS engineering plastic, it is rotated out from the enclosure slot during installation to secure the product.
8	Secondary winding	Made of oxygen-free copper material, directly welded with polyurethane paint film, temperature resistant up to 155 degrees Celsius
9	Winding insulation	Polyester film/PVC film/crepe paper, etc., used to protect enameled wires from damage
10	Shield	Made of high magnetic permeability silicon steel or other magnetic permeability materials to ensure excellent balance characteristics
11	Enclosure	Flame-retardant ABS plastic or PC/ABS alloy plastic, with high temperature resistance, high strength and good flame-retardant properties

Normal use and installation conditions:

Installation location: indoor/outdoor. Ambient temperature -40℃ ~ +45℃
It is recommended that the relative humidity of the environment should not be greater than 80%
The altitude does not exceed 3000m
Atmospheric conditions: There are no seriously polluted, corrosive and explosive media in the atmosphere
An environment without significant frequent vibration and shock. Storage temperature ：-20℃ ~ +75℃

Balance performance:

P/N	Main circuit rated operating current	Test current	Conductor diameter	Conductor insulation thickness	Unbalance current
LO-ZRCT-30	0≤In≤63A	63A	4mm	0.5mm	≤2mA@63A
LO-ZRCT-46	0≤In≤100A	100A	6mm	1.0mm	≤5mA@315A
LO-ZRCT-65	0≤In≤250A	250A	10mm	1.5mm	≤5mA@315A
LO-ZRCT-80	0≤In≤315A	315A	10mm	1.5mm	≤10mA@630A
LO-ZRCT-100	0≤In≤630A	630A	14mm	2.0mm	≤20mA@630A
LO-ZRCT-120	0≤In≤1000A	1000A	20mm	2.0mm	≤20mA@1000A

Dimensions:

Model specifications	Main circuit current (A)	Aperture (mm)	Overall dimensions (mm)			Dimensions (mm)
Model specifications	Main circuit current (A)	Aperture (mm)	L	W	H	D1	D2	W
LO-ZRCT-30	≤63A	30	65	32	75	67.5	75.5	6
LO-ZRCT-46	≤100A	46	85	32	94	88.5	100.5	6
LO-ZRCT-65	≤250A	65	108	32	120	108.5	122	6
LO-ZRCT-80	≤400A	80	128	36	140	134	144	6
LO-ZRCT-100	≤630A	100	150	36	162	152	172	6
LO-ZRCT-120	≤1000A	120	172	36	184	177	197	6

General technical specs:

Technical Spec	Electrical specs
Rated primary current	1000mA	5A	5A	10A	10A
Rated secondary current	0.5mA	2.5mA	5mA	5mA	10mA
Rated continuous thermal current	2000mA	10A	10A	50A	50A
Operating frequency	50-60Hz
Rated Accuracy class	Equal or above Class 0.5
Operating voltage	<=660V
Flame retardant class	UL94V-0
Insulation resistance	>= 1M Ohms @500VDC
Dielectric strength	AC3KV/2mA/60s/50Hz
Thermal Class	Class B

When the corresponding AC current passes the residual current transformer, the output sampling voltage should meet the requirements listed in the table below

R=1000Ω C=0.022uF Current source frequency:50-60Hz, accuracy class better than 0.1%, the voltage meter accuracy class of mV testing range is better than 0.1%

Detection current value(mA)	Current range (mA)	Load resistor	Testing terminals	Sampling voltage range (mV)
50	49.75-50.25	1000Ω/0.022uF	S1-S2	24.64-25.64
200	199-201			97.18-101.14
500	498-502			243.01-253.01
800	796-804			388.7-404.7
1000	995-1005			486.25-506.26

WuXi Liou Electronics Co.,Ltd

Our constant goal is to work hard to provide customers with high-quality Hall Effect Closed Loop Current Sensor Split Core Current Transmitter for DC AC Current. We will cooperate with you with fast and efficient service and reasonable prices, and create a better future with you! Our products and solutions are selling well both in domestic and foreign markets. We get good reputation from the customers due to our good products quality and fine after-sale service.

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