Switchgear describes a complete set of power circulation devices put together from main devices as well as additional tools according to a certain circuit strategy. It is utilized to regulate and secure circuits as well as equipment. The structure of the switchgear is roughly similar, primarily split right into busbar area, breaker space, secondary control space (instrument room), feeder room, each area is normally divided by steel plates.
low-voltage withdrawable switchgear
1. Comprehending of distribution box (cabinet).
GCK, GCS, MNS are low-voltage withdrawable switchgear; GGD, GDH, PGL are low-voltage repaired switchgear; XZW is a thorough circulation box; ZBW is a box-type substation; XL, GXL are low-voltage power circulation cabinets and also construction site boxes; JXF is an electrical control box; PZ20 and PZ30 series are terminal illumination circulation boxes; PZ40 and also XDD( R) are electrical meter dimension boxes.
2. The result of low-voltage power distribution closets.
( 1) It is practical to set up the power supply reasonably.
( 2) When the line stops working, it is beneficial to control the extent of the fault and also it is hassle-free to promptly locate the mistake point and also eliminate it in time.
( 3) It is practical to organize circuit inspection and repair in items, without large pretreatment machine power interruption.
( 4) Various security devices such as integrates to prevent brief circuits as well as air switches to prevent overload can be comfortably placed in the power circulation cabinet.
3. The make-up of the low-voltage power distribution closet.
( 1) The power distribution closet mostly includes: circuitry terminals, various switches, protection devices (air buttons, fuses, etc.), determining devices (voltmeter, ammeter, cycle meter, and so on), gauging tools (active and also reactive power) table).
( 2) There are many types of low-voltage power distribution closets, and the components are really various. Taking the power closet as an example, from leading to bottom: knife switch, present transformer, air button, and branch circuit breakers.
TControl power circulation closet.
4. The web content of each digit of the power circulation cabinet design.
GGD low-voltage power distribution closet: G-- low-voltage power circulation closet; G-- fixed setup and circuitry; D-- power cabinet;.
GCK low-voltage power circulation closet: G-- cupboard structure; C-- withdrawable kind; K-- control;.
GCS low-voltage power distribution cupboard: G-- confined button cabinet; C-- withdrawable type; S-- Senyuan electrical system;.
MNS low-voltage power circulation closet is a product made in accordance with the transfer innovation of Swiss ABB firm.
5. The difference between GGD, GCS, GCK, MNS power circulation cupboard.
GGD is various from the various other three in that it is a fixed kind, while GCK, GCS, and MNS are all cabinet kind button cabinets. Each outlet system of them is independent as well as each circuit will not influence each other.
GCS is a new generation of drawer kind switch cabinet made by Senyuan Company in the mid-90s with referral to ABB's MNS cupboard kind. The major structure is similar to MNS, with the primary bus bar behind. The distinction from MNS is that the cabinet component makes use of a 20mm module (MNS is 25mm); the drawer adopts a press mechanism, that makes the procedure more convenient and also versatile.
The MNS cupboard can be operated on both sides, as well as a single cabinet can hold 36 loopholes (with 1/4 cabinets) at the majority of, while the GCS can be approximately 22. The product used in the MNS cupboard is aluminum-zinc plated, completely constructed structure, no post-processing (galvanizing) is called for.
The straight busbars of MNS as well as GCS are separated from the front left drawer device and the front right cord outlet compartment with dividings. Their upright busbars are assembled in flame-retardant plastic practical boards to be more trusted. The difference is that GCS can only have 1/2 drawer at the very least, MNS has 1/4 drawer, MNS cabinet has another interlocking device, and also GCS just has the switch itself.