Switchgear refers to a full collection of power circulation tools set up from key devices as well as secondary tools according to a specific circuit plan. It is made use of to manage and shield circuits and devices. The framework of the switchgear is approximately comparable, mainly divided right into busbar room, breaker space, secondary control area (tool room), feeder area, each room is generally separated by steel plates.
low-voltage withdrawable switchgear
1. Understanding of circulation box (cabinet).
GCK, GCS, MNS are low-voltage withdrawable switchgear; GGD, GDH, PGL are low-voltage repaired switchgear; XZW is a comprehensive distribution box; ZBW is a box-type substation; XL, GXL are low-voltage power distribution cupboards and building and construction website boxes; JXF is an electric control box; PZ20 and PZ30 collection are incurable lighting distribution boxes; PZ40 and XDD( R) are electrical meter measurement boxes.
2. The impact of low-voltage power circulation closets.
( 1) It is practical to set up the power supply reasonably.
( 2) When the line fails, it is helpful to regulate the range of the mistake and also it is hassle-free to rapidly locate the fault point and remove it in time.
( 3) It is practical to set up circuit maintenance in pieces, without large-scale power failure.
( 4) Various protection gadgets such as merges to stop brief circuits and air buttons to avoid overload can be comfortably put in the power circulation closet.
3. The structure of the low-voltage power distribution closet.
( 1) The power circulation cupboard mostly consists of: electrical wiring terminals, various buttons, defense equipment (air buttons, integrates, and so on), measuring equipment (voltmeter, ammeter, cycle meter, and so on), measuring devices (energetic and responsive power) table).
( 2) There are several sorts of low-voltage power circulation cabinets, as well as the elements are very different. Taking the power closet as an example, from top to bottom: blade button, current transformer, air button, and branch breaker. If you directly manage the electrical load, there are contactors, thermal relays, as well as branch present transformers under the branch circuit breakers. Naturally, there are ammeters, voltmeters, voltage conversion switches, as well as indicator lights.
TControl power distribution cabinet.
4. The web content of each number of the power distribution cabinet model.
GGD low-voltage power circulation cupboard: G-- low-voltage power distribution cupboard; G-- set setup as well as circuitry; D-- power cabinet;.
GCK low-voltage power distribution cupboard: G-- cupboard framework; C-- withdrawable kind; K-- control;.
GCS low-voltage power circulation cupboard: G-- confined button closet; C-- withdrawable type; S-- Senyuan electric system;.
MNS low-voltage power circulation cupboard is a product made based on the transfer innovation of Swiss ABB business.
5. The difference in between GGD, GCS, GCK, MNS power circulation cupboard.
GGD is different from the other 3 because it is a set type, while GCK, GCS, as well as MNS are all cabinet type switch closets. Each outlet device of them is independent as well as each circuit will certainly not impact each other.
GCS is a new generation of drawer kind switch cabinet created by Senyuan Company in the mid-90s with recommendation to ABB's MNS cupboard kind. The major structure is similar to MNS, with the major bus bar behind. The distinction from MNS is that the cabinet module uses a 20mm component (MNS is 25mm); the drawer adopts a press system, that makes the procedure more convenient and adaptable.
The MNS closet can be operated on both sides, as well as a single cupboard can hold 36 loopholes (with 1/4 cabinets) at most, while the GCS can be up to 22. The product utilized in the MNS cabinet is aluminum-zinc layered, completely assembled structure, no post-processing (galvanizing) is required.
The horizontal busbars of MNS as well as GCS are divided from the front left drawer unit pretreatment equipment and the front right wire electrical outlet compartment with dividers. Their vertical busbars are put together in flame-retardant plastic useful boards to be extra reliable. The distinction is that GCS can just have 1/2 cabinet at least, MNS has 1/4 drawer, MNS cabinet has an additional interlocking device, and also GCS only has the switch itself.