Leakage protector quality appraisal

leakage protector is an electrical safety device. Install the leakage protector in a low-voltage circuit. When leakage or electric shock occurs and reaches the operating current value limited by the protector, it will immediately act within a limited time and automatically cut off the power supply for protection. Leakage protectors mainly provide indirect contact protection. Under certain conditions, they can also be used as supplementary protection for direct contact to protect against potentially fatal electric shock accidents.

Zhongke Testing and Appraisal Institute can provide leakage protector quality appraisal services and make accurate appraisals in terms of product design analysis, load analysis and product quality analysis.

can be divided into voltage-action type and current-action type according to the action mode;

can be divided into switch type and relay type according to the action mechanism;

can be divided according to the number of poles and wires, including single-pole two-wire, two-pole, two-pole three-wire, etc.;

can be divided according to the action sensitivity: High sensitivity: leakage action current is below 30mA; medium sensitivity: 30~1000mA; low sensitivity: above 1000mA;

can be divided according to the action time: fast type: leakage action time is less than 0.1s; delay type: action time is greater than 0.1s, between 0.1-2s; inverse time limit type: as the leakage current increases, the leakage action time decreases.

JB 8979-1999 Residual current circuit breaker with overload protection

GB/T 13955-2017 Installation and operation of residual current action protection device

GB/T 19436.2-2013 Mechanical and electrical safety Electrosensitive protection equipment Part 2: Special requirements for equipment using active optoelectronic protective devices (AOPDs)

GB/T 41997.1-2022 Mechanical and electrical safety Vision-based electrosensitive protective equipment Part 1: General technical requirements

GB/T 19436.1-2013 Mechanical and electrical safety Electrosensitive protective equipment Part 1: General requirements and tests

0GB/T 18802.12-2014 Low-voltage surge protective devices (SPD) Part 12: Surge protective devices for low-voltage distribution systems Selection and use guidelines

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2GB/T 18802.22-2019 Low-voltage surge protective devices Part 22: Surge protective devices for telecommunications and signaling networks Guidelines for Selection and Use

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The applicant XX gas station signed a "Car Washing Machine Sales Contract" with an electrical company. The electrical company guaranteed that the quality of the car washing machine equipment it sold complied with the technical standards agreed in the contract. On June XX, XX, the victim Zhu was electrocuted when he went to a gas station to use a car washing machine to wash his car. The gas station believed that the leakage protector of the car wash machine involved had quality defects, which led to the accident, and appealed to the court.

Our company was entrusted by the court to identify the quality issues of the car washing machine and leakage protector involved in this case.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information, on-site investigation and inspection data of the "leakage protector" involved in the case, and made the following quality analysis opinions:

The leakage protector submitted for inspection does not meet the leakage protection function quality standards stipulated by the relevant country.