Explosion proof equipment

Devices that produce sparks under normal operating conditions specifically refer to equipment that generates arcs and sparks under normal operating conditions. Their electrical clearances and creepage distances comply with industrial safety standards, ensuring reliable insulation distances. For instance, switches, relays, and contactors without explosion-proof protection measures. When such electrical equipment is applied in Zone 2 […]

In explosive hazardous environments, the exposed non-charged metal parts of electrical equipment such as the metal enclosures, metal frameworks, equipment installed on grounded metal structures, metal piping and its fittings, cable protection conduits, and the metal sheaths of cables, etc., should all be grounded. Many standards have made clear regulations on the grounding requirements for

The insulation dielectric strength of “n” type electrical equipment to ground or frame shall comply with the following provisions, except when the circuits installed in the electrical equipment are directly connected to the equipment frame or connected to the frame during equipment operation: a. Tests as specified in the relevant industrial standards for the various

In production sites that contain explosive hazardous environments, mobile explosion-proof electrical equipment such as explosion-proof mobile phones, explosion-proof walkie-talkies, explosion-proof flashlights, and explosion-proof mobile work lights have been widely applied. Equipment that may enter or be brought into a hazardous area should have an appropriate Equipment Protection Level (EPL). If mobile or portable equipment used

Steel pipe wiring accessories (hereinafter referred to as accessories) as a component of explosion-proof electrical steel pipe wiring, correct selection, installation, use and maintenance, to ensure the explosion-proof safety of explosion-proof electrical equipment can not be ignored. 1. Accessories can be divided into three categories according to their structure and use 1) Box type (used

I. Determination and Testing Methods for External Conductive Parts Attached to the Appliance External conductive parts that are attached to or form part of a non-metallic enclosure and have a ground resistance exceeding 1 GΩ when measured at (500 ± 25) V d.c., and parts that are susceptible to static charges that may become ignition

The entry devices of flameproof type mainly include cable entry devices, conduit sealing devices, EX blocking parts, EX threaded pipe joints and insulating sleeves. The installation threads (the threaded entry ports installed on flameproof type equipment) of these entry devices should meet the following requirements: 1. Thread type: cylindrical threads shall be metric threads, and

Regardless of the electrochemical type, the batteries (or battery packs) used inside the flameproof enclosure should prevent the formation of flammable mixtures of electrolytic gases (usually hydrogen and oxygen) within the flameproof enclosure. 1.The types of batteries that can be used in explosion-proof enclosures are as follows: (Note: The table is not provided in the

The usage environment of explosion-proof electrical equipment is typically highly corrosive and harsh. Regular maintenance of explosion-proof electrical equipment is a crucial task to guarantee its sustained and effective explosion-proof performance. I. Maintenance of Explosion-proof Electrical Equipment When it is discovered during maintenance that the explosion-proof performance of explosion-proof electrical equipment has deteriorated or failed

Flameproof electrical equipment is extensively utilized in production sites, and the flameproof joint surface is among the factors influencing the flameproof performance. During on-site inspections, the issue of rusting on the flameproof joint surface is relatively common. Hence, it is of utmost significance to carry out effective rust prevention treatment and maintenance of the flameproof