Switchgear refers to a full collection of power distribution devices assembled from main equipment and also secondary equipment according to a specific circuit plan. It is made use of to regulate and secure circuits and also devices. The structure of the switchgear is about comparable, mostly divided right into busbar area, breaker room, second control space (instrument room), feeder room, each area is usually separated by steel plates.
low-voltage withdrawable switchgear
1. Recognizing of circulation box (cupboard).
GCK, GCS, MNS are low-voltage withdrawable switchgear; GGD, GDH, PGL are low-voltage repaired switchgear; XZW is a comprehensive circulation box; ZBW is a box-type substation; XL, GXL are low-voltage power circulation cupboards and also building and construction site boxes; JXF is an electrical control box; PZ20 as well as PZ30 collection are terminal illumination distribution boxes; PZ40 as well as XDD( R) are electrical meter measurement boxes.
2. The result of low-voltage power distribution cupboards.
( 1) It is practical to configure the power supply fairly.
( 2) When the line stops working, it is advantageous to regulate the extent of the mistake and it is convenient to swiftly discover the mistake point and remove it in time.
( 3) It is convenient to arrange circuit maintenance in pieces, without large power failure.
( 4) Various defense gadgets such as integrates to prevent brief circuits and air buttons to stop overload can be easily put in the power distribution cabinet.
3. The make-up of the low-voltage power distribution closet.
( 1) The power distribution cabinet primarily includes: electrical wiring terminals, various switches, defense devices (air buttons, integrates, and so on), determining tools (voltmeter, ammeter, cycle meter, etc.), determining equipment (energetic and reactive power) table).
( 2) There are several kinds of low-voltage power distribution cupboards, and also the parts are very various. Taking the power cabinet as an example, from top to bottom: blade switch, current transformer, air switch, and also branch circuit breakers. If you directly control the electrical lots, there are contactors, thermal relays, as well as branch present transformers under the branch circuit breakers. Naturally, there are ammeters, voltmeters, voltage conversion changes, and indicator lights.
TControl power distribution cupboard.
4. The material of each digit of the power distribution closet design.
GGD low-voltage power circulation closet: G-- low-voltage power distribution cabinet; G-- fixed setup and electrical wiring; D-- power closet;.
GCK low-voltage power distribution cupboard: G-- closet framework; C-- withdrawable kind; K-- control;.
GCS low-voltage power circulation cabinet: G-- confined switch closet; C-- withdrawable type; S-- Senyuan electric system;.
MNS low-voltage power circulation closet is a product produced according to the transfer modern technology of Swiss ABB firm.
5. The distinction in between GGD, GCS, GCK, MNS power distribution cabinet.
GGD is various from the other 3 because it is a set type, while GCK, GCS, and MNS are all drawer kind button cupboards. Each electrical outlet unit of them is independent as well as each circuit will certainly not influence pickling line acid each other.
GCS is a brand-new generation of cabinet kind switch cabinet developed by Senyuan Company in the mid-90s with referral to ABB's MNS closet kind. The major framework resembles MNS, with the major bus bar behind. The distinction from MNS is that the cabinet module makes use of a 20mm module (MNS is 25mm); the cabinet takes on a push system, which makes the operation more convenient as well as flexible.
The MNS cupboard can be operated both sides, and a single cupboard can hold 36 loops (with 1/4 cabinets) at most, while the GCS can be approximately 22. The product made use of in the MNS cabinet is aluminum-zinc layered, fully set up structure, no post-processing (galvanizing) is called for.
The straight busbars of MNS as well as GCS are separated from the front left cabinet device and also the front right cord electrical outlet area with partitions. Their upright busbars are assembled in flame-retardant plastic functional boards to be a lot more trusted. The distinction is that GCS can only have 1/2 cabinet at least, MNS has 1/4 drawer, MNS cabinet has an additional interlacing device, as well as GCS just has the switch itself.