Why do advanced EV charging systems need accurate current sensors?     As the use of electric vehicles continues to increase, people’s attention to the car battery system has shifted from the range to the charging time. Electric vehicle charging systems must operate safely and reliably, as improper execution can lead to inefficiencies and shortened […]

The main electrical energy measurement problems in electric vehicle charging pile introduction The contradiction between people’s growing material and cultural needs and limited non-renewable energy is an important reason for the promotion and development of new energy and related industries. China’s aggressive push for electric vehicles has also boosted demand for charging piles. Promoting the […]

Electromagnetic leakage protection characteristics robust design    Analysis of factors affecting the robustness of leakage protection characteristics Influence of compensation capacitance dispersion on the robustness of protection characteristics In order to analyze the influence of the dispersion of compensation capacitor C1 on the leakage action value, equation (2) can be obtained by transforming (4) Then […]

An in-depth study of the world of Type B residual current devices (RCDS)   Understand RCD concepts The residual current device, commonly referred to as rcd, is the basic safety mechanism in the circuit. When the current of the live conductor at a point in the phase exceeds a predetermined value, they provide protection by […]

influencing factors of electromagnetic leakage protection characteristics 1 Influence of compensation circuit parameters on leakage protection characteristics Leakage protection features include leakage action value IDd and leakage action time td. The action value IDd should be less than the rated leakage action current IDn and greater than the rated leakage action current IDno, generally IDno= […]

Electromagnetic leakage protection working principle    The electromagnetic leakage protector is generally composed of five parts: residual current transformer, leakage detection circuit (signal conditioning circuit and trip drive circuit), magnetic release device, test button and circuit breaker action mechanism, as shown in Figure 1. Fig.1 Schematic diagram of electromagnetic leakage circuit breaker    When the […]

The capacity of the current transformer is mainly based on the secondary use of the current transformer; Generally speaking, the secondary line is long, and the required capacity is larger; Secondary line; The capacity of the current transformer is generally 5VA-50VA, for short lines; The selection of current transformer capacity should be combined with actual […]

Type AC or type A rcd, com conforms to the standard IEC/ EN 61008 and IEC/EN 610091), applicable to Most types of families and the like The application. However, the growingUsing power electronics technology Leakage current can occur in household appliances with a ground connection . In both have waveforms with high DC com components […]

 HYCA series leakage transformer      The international standard “IEC62752-2016” was officially release in 2016, and the functions and roles of IC-CPD are specifi in the standard. In 2018, the “‌IEC 62955” standard was released. In both standards, Type B residual current detection has become an important function. Residual current detection also becomes a mode […]

HYCA Current Transformer   HYCA is an AC DC leakage current sensor (RCD/RCM sensor) with pin/cable installation. It has the characteristics of high sensitivity, correct measurement, small size and compact/integration design. The residual current monitor can set separately for AC and DC leakage. When leakage current is detect, an alarm signal is generate, and the […]

How does an RCM work?   In circuit monitoring, all monitored circuit conductors (except the PE conductor) need to pass through the measuring current transformer. Under normal circumstances, the sum of the currents in these conductors is zero, so no voltage is induce in the measuring current transformer. However, if a fault current (IΔ) appears […]

What is the difference between CT in measurement and protection?   Current transformers (CTs) are widely use in power systems for measurement and protection, but their functions and requirements in these two applications are different. Here are the main differences: 1. Current transformer for measurement Main function: Convert large currents into smaller currents in proportion […]