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25
Dec, 2020
Working principle of high-voltage ring main unit
The ring network refers to the ring power distribution network, that is, the power supply main line forms a closed loop. The power supply supplies power to the ring main line. From
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25
Dec, 2020
Transformer (transformer) is an electromagnetic device whose functions can be roughly divided into the following functions: 1. You can increase or decrease the value of AC voltage
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25
Dec, 2020
Working principle of transformer
The transformer consists of an iron core (or magnetic core) and a coil. The coil has two or more windings. The winding connected to the power supply is called the primary winding,
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25
Dec, 2020
How to check the quality of high and low voltage switchgear
Inspection of wiring process of high and low voltage switch cabinet: 1. Whether the wires are connected firmly, only one wire is allowed to be connected to each terminal (two wires
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23
Dec, 2020
Control power supply of high and low voltage switchgear
The core control power of the high and low voltage switchgear comes from the control power supply. If the control power fails, the core control components of the high and low volta
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23
Dec, 2020
Precautions for grounding protection of high and low voltage switchgear
The grounding protection of high and low voltage switchgear is to connect some conductive parts of electrical installations or facilities in the power system and buildings to the g
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23
Dec, 2020
Features of GGD low voltage switchgear
GGD AC low-voltage switchgear is suitable for power distribution systems with AC 50Hz, rated working voltage 380V, and rated working current 1000-3150A for power users such as subs
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23
Dec, 2020
Classification of High Voltage Switchgear
Removable type or handcart type (indicated by Y) Indicates that the main electrical components in the cabinet (such as circuit breakers) are installed on the handcart that can be w
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23
Dec, 2020
The difference between PT cabinet and metering cabinet in high voltage switch...
High and low voltage switchgears are equipment for connecting high voltage or low voltage cables. Generally, power supply bureaus and substations use high voltage cabinets, which a
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23
Dec, 2020
Inspection of high and low voltage switchgear before delivery
Cabinet assembly inspection: 1. The width, depth, and height dimensions of the cabinet meet the requirements of the drawings, and the diagonal dimension deviation is ≤±2mm; the dim
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23
Dec, 2020
High and low voltage switchgear
High and low voltage switchgear is the equipment connected to high voltage or low voltage cables. Generally, electric power bureaus or substations use high-voltage cabinets, which
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30
Nov, 2020
What instruments are included in the high and low voltage switchgear?
The switchgear shall meet the relevant requirements of the GB3906-1991 "3-35 kV AC Metal-enclosed Switchgear" standard. It is composed of a cabinet and a circuit breaker,