Current Transformer

EHC-RCT series Roche coil

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Description
Advantage

Only few typical products of this series are shown in the following pages. EHC is capable of making other customized design and manufacturing per user request.

Specifications and Parameters:

Technical parameters	index	Remark
Rated primary current I b	100A
Maximum primary current I max	500A
Change ratio	500A/400mV, 500A/30mV, 2000A/400mV
Rated frequency	50Hz/60Hz
Fixed position accuracy level 1 2	0.5S class
Linearity	0.10%
Temperature drift	≤0.5%
DC bias	≤0.1mV	The noise floor is ≤0.1mV, which means that the fixed DC component of the Roche coil itself should be less than 0.1mV to reduce environmental impact.
Bandwidth (-3dB)	45Hz ~ 5kHz
Output internal resistance	40Ω~200Ω
Loading capability	5kΩ
Maximum voltage	600V
AC withstand voltage	3kVAC 50Hz 1min
Operating temperature range	-40℃～70℃
Relative humidity	≤80%RH
altitude	4000m and below
Flame retardant grade of housing	UL94 V-0
Note:
1. When installed at fixed position, the accuracy level is 0.5S
2. When installed in a non-fixed position, the error deviation of the current line passing through the coil perpendicularly is ≤1%, and the error deviation of the inclined passes through the coil is ≤1.5%.
Integrator: Temperature drift should be ≤0.5% under an environment of -40℃~70℃
Coil body: thermoplastic elastomer Compliant with UL 94 V-0
The Roche coil should be able to meet the requirements of 48h salt spray test, 144h humidity and heat test, combustion test, impact test and vibration test; the shell must not deform under long-term light, the surface will not crack, and the deformation and fade, and meet the requirements of 72h light test and -40℃~70℃ high and low temperature test.

// Zhejiang Enhong Electronics Co., Ltd.

Who Are We

Formerly known as Hangzhou Hongci Technology Co., Ltd., it is China custom EHC-RCT series Roche coil suppliers and OEM EHC-RCT series Roche coil factory, we have independent core technology. Its annual sales volume is nearly 40 million. Its service customers include China State Grid, China Southern Power Grid, German Volkswagen, Schneider Electric, Siemens, ABB, Schaffner, Panasonic and other well-known enterprises.

Company History

2006.8

Zhejiang Enhong Technology Co., Ltd. was established in August 2006.
2010

The annual production of magnetic cores exceeds 15 million pieces.
2014

Zhejiang Enhong Electronics Co., Ltd. was established, and the production base was located in Tongxiang.
2016

Obtained 8 patent certificates, Zhejiang high-tech enterprise.
2019

Gradually realize the equipment replacement automation production capacity reaches 80%.