Switchgear describes a total set of power distribution devices constructed from key equipment as metal pretreatment line well as secondary tools according to a certain circuit plan. It is made use of to manage and safeguard circuits as well as devices. The structure of the switchgear is roughly comparable, primarily split into busbar space, breaker space, additional control room (instrument area), feeder room, each space is typically 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 circulation box; ZBW is a box-type substation; XL, GXL are low-voltage power distribution cupboards and construction website boxes; JXF is an electrical control box; PZ20 as well as PZ30 series are incurable lighting circulation boxes; PZ40 and XDD( R) are electrical meter dimension boxes.
2. The effect of low-voltage power circulation cabinets.
( 1) It is practical to configure the power supply reasonably.
( 2) When the line stops working, it is beneficial to regulate the extent of the mistake as well as it is practical to rapidly find the mistake point and eliminate it in time.
( 3) It is practical to set up circuit maintenance in pieces, without large-scale power outage.
( 4) Various security tools such as fuses to avoid short circuits as well as air buttons to stop overload can be easily positioned in the power distribution closet.
3. The structure of the low-voltage power distribution closet.
( 1) The power distribution closet mostly includes: wiring terminals, numerous buttons, defense equipment (air switches, fuses, etc.), measuring equipment (voltmeter, ammeter, cycle meter, etc.), determining devices (active as well as reactive power) table).
( 2) There are numerous types of low-voltage power circulation closets, as well as the parts are really various. Taking the power cupboard as an example, inside out: blade button, current transformer, air switch, and also branch breaker. If you directly regulate the electrical lots, there are contactors, thermal relays, and branch current transformers under the branch breaker. Of course, there are ammeters, voltmeters, voltage conversion switches over, and also sign lights.
TControl power distribution closet.
4. The web content of each number of the power circulation cupboard design.
GGD low-voltage power distribution cupboard: G-- low-voltage power distribution cabinet; G-- set setup as well as wiring; D-- power cupboard;.
GCK low-voltage power circulation cupboard: G-- cupboard framework; C-- withdrawable type; K-- control;.
GCS low-voltage power distribution cabinet: G-- confined switch cabinet; C-- withdrawable kind; S-- Senyuan electrical system;.
MNS low-voltage power distribution cupboard is a product produced in accordance with the transfer technology of Swiss ABB company.
5. The difference between GGD, GCS, GCK, MNS power circulation cupboard.
GGD is various from the other three because it is a set kind, while GCK, GCS, as well as MNS are all drawer type switch closets. Each electrical outlet device of them is independent and each circuit will not influence each various other.
GCS is a new generation of cabinet kind button cabinet designed by Senyuan Company in the mid-90s with referral to ABB's MNS cabinet type. The major structure is similar to MNS, with the main bus bar behind. The difference from MNS is that the cabinet component uses a 20mm module (MNS is 25mm); the cabinet embraces a press system, that makes the procedure easier as well as flexible.
The MNS cabinet can be operated both sides, and a single cabinet can hold 36 loops (with 1/4 drawers) at the majority of, while the GCS can be as much as 22. The product made use of in the MNS cupboard is aluminum-zinc plated, fully put together structure, no post-processing (galvanizing) is required.
The horizontal busbars of MNS and GCS are separated from the front left drawer unit and also the front right wire outlet compartment with partitions. Their vertical busbars are constructed in flame-retardant plastic useful boards to be more trusted. The distinction is that GCS can just have 1/2 cabinet at least, MNS has 1/4 drawer, MNS cabinet has another interlacing device, as well as GCS only has the switch itself.