About Ring Main Unit: The Key Equipment in Modern Power Distribution
In today’s power distribution field, the Ring Main Unit (RMU) plays a crucial role. It is a factory-assembled metal-enclosed switchgear widely used in the power supply systems of various infrastructures, including high-rise buildings, industrial facilities, and residential communities. A deep understanding of the RMU is of great significance for optimizing power distribution decisions. 1. Definition […]
About Switchgear
1. The Essence of Switchgear Switchgear, in its simplest form, is a collection of electrical devices that work in harmony to control, protect, and isolate electrical equipment within a power system. It serves as the first line of defense against power surges, short circuits, and overloads, safeguarding the integrity of the entire electrical infrastructure. 1.1 […]
Analysis of Reasons for High Transformer Temperature
There are several reasons why a transformer’s temperature may be too high. These can be due to issues with the transformer itself or external factors. Causes of Transformer Overheating Internal Causes When a transformer operates, it reaches a state where heat generation and heat dissipation are balanced, and the temperature of each part stabilizes. If […]
Electricity Market Report – Mid-Year Update
Background information Despite the enduring impacts of the global energy crisis, growth in electricity demand has remained robust in the first half of 2024 due to solid economic activity in many regions, intense heatwaves, and continued electrification. This mid-year update, which follows the Electricity 2024 report published in January, explores this trend and its implications. It features […]
Design of IEC standard ring main unit
The design of IEC ring network cabinet, the current Saudi Arabia, Russia and other countries for China-made ring network cabinet demand, various manufacturers are designing related products. IEC standard ring network cabinet requirements generally have a common box, mechanical key interlocking, internal arc pressure release, cable voltage test dedicated interface, outdoor box and its size, […]
Electric operation of medium voltage switchgear
Medium-voltage switchgear circuit breaker, equipped with electric remote breaking and closing operation is a basic requirement, spring actuator mechanism circuit breaker to remote breaking and closing, first of all, electric energy storage, the general circuit breaker are equipped with circuit breaker in the closing (regardless of manual or electric), immediately after the energy storage action, […]
Environmentally friendly transformer box
Currently, environmentally friendly vegetable oil has been applied to high-voltage 220/550kV transformers, achieving good electrical performance and environmental performance. The American box variable seals the switch, transformer and other high-voltage circuits inside the oil tank, which has a compact structure, and can be environmentally friendly and safe through the use of vegetable oil substitution. Realise […]
“Five-Proof” Blocking and Typical Failure Analysis of High Voltage Switchgear
1 Composition of high voltage switchgear The switchgear cabinet consists of two parts: the cabinet and the handcart. High-voltage switchgear is mainly divided into four parts: busbar room, cable room, handcart (circuit breaker) room, relay instrumentation room. The upper part of the back of the switchgear cabinet is the busbar room, which holds the high-voltage […]
Lifespan of switchgear
Excessive temperature rise, insulation aging, and institutional wear are the three main forms of switchgear failure. Temperature rise and insulation are closely related, one of the main purposes of limiting the temperature rise is to avoid insulation problems, air insulated metal-enclosed switchgear, long term use, due to increased temperature leading to thermal runaway, accelerated insulation […]
Transformer oil seepage hazards and treatment methods
Transformer seepage leakage of oil specific hazards 1. transformer oil seepage phenomenon not only seriously affects the appearance, but also because the transformer needs to be shut down to eliminate the leakage and cause economic losses. If the transformer ground base on the more oil, may also become a fire hazard. 2. oil seepage will […]