Product News
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How to choose circuit breaker (air switch) type C and type D?
How to choose the type C and D of the circuit breaker (air switch)? There is usually a distribution box somewhere in our home, and a corresponding switch will be installed in the distribution box. There are mainly two kinds of switches installed in the distribution box: the first is the ordinary ...Read more -
How to connect the UPS battery？
Many friends ask how to connect the UPS battery?This is a small detail that is easy to ignore, but related problems are often encountered in actual projects. In this issue, JONCHN Electric will answer this question together. UPS battery wiring 1. The installation sequen...Read more -
Where on earth is the sound coming from the transformer?
The sound of the transformer comes from inside the transformer.The transformer is based on the principle of electromagnetic induction, with primary side winding coil and secondary side winding coil installed inside, and silicon steel sheet with high magnetic conductivity material in the middle.Un...Read more -
Basic knowledge and maintenance of UPS
What is an uninterrupted power supply system? Uninterrupted power supply system is a kind of uninterrupted, stable and reliable AC power device, which is specially used for computers and other important equipment, so that the equipment can still operate normally when the...Read more -
Introduction to Medium Voltage Switchgear —JONCHN GROUP
1、Introduction The switch cabinet is a kind of electrical equipment. The external lines of the switch cabinet enter the main control switch in the cabinet first, and then enter the sub control switch. Each branch is set according to its needs. For example, instruments, ...Read more -
Introduction to Basic Technology of Box type Substation– JONCHN Electrical
Box type transformer Relevant knowledge of box type transformer What is a transformer? It is a device that uses the principle of electromagnetic induction to change the AC voltage. It is often used for voltage rise and fall, m...Read more -
Classification, structure, maintenance and troubleshooting of box type substation
Box Type Substation Box type substation integrates high and low voltage primary equipment, transformer and secondary equipment into a double-layer, sealed, corrosion-resistant and movable outdoor box in the factory. Box type substation, also known as prefabricated substa...Read more -
Portable solar lantern, making life more convenient
According to official statistics, about 789 million people worldwide live without electricity. It is estimated that 620 million people will still have no access to electricity by 2030, of which 85% are in sub-Saharan Africa. Most of these people rely on kerosene, candles...Read more -
Product Recommendation – JFS1-400/3 Pole Mount Fuse Switch
Product usage The pole mount fuse switch is applicable to the power line system with AC 50Hz, rated insulation voltage up to 690V and rated current of 400A, and is used to connect and isolate the power supply under the voltage line. Th...Read more