The soft start MCC cabinet consists of the following parts: 1. circuit breaker at the input end, 2. soft starter (including electronic control circuit and three-phase thyristor), 3. bypass contactor of the soft starter, 4. secondary side control circuit (to complete the selection and operation of manual start, remote start, soft start, and direct start functions), with voltage and current display and fault, operation, and working status indicator lights display.
MNS cabinet:
Main architecture
The basic structure of the cabinet is composed of C-shaped profiles assembled. The C-shaped profile is bent from a steel MNS type distribution cabinet board with E=25mm as the module mounting hole
2. The withdrawable MCC cabinet is divided into three compartments, which are functional unit room (left in front of the cabinet), busbar room (rear of the cabinet), and cable room (right in front of the cabinet). Due to the horizontal busbar compartment located at the back, it can also be made into a double-sided cabinet.
3. In order to reduce the broadband of the switchgear arrangement, the main busbar of the switchgear is horizontally installed at the top of the switchgear, and the rear half of the cabinet is a cable room. At this time, the busbar style is similar to that of the GCK cabinet.
GGD cabinet: (ESS)
Electrical performance:
1. Basic electrical parameters
A) Rated insulation voltage: AC 660v (1000) v
GGD type low-voltage distribution cabinet
B) Rated working voltage: Main circuit: AC 380V (660V) Auxiliary circuit: AC 380V (220V) DC 220V (110V)
C) Rated frequency: 50Hz
D) Rated current: ≤ 4000A
E) Rated peak withstand current (0.1s) 105KA
F) Rated short-term withstand current (1s) 50KA
The GCK series AC low-voltage distribution cabinet is listed as a new energy-saving product by the country. The control center has advanced structure, beautiful appearance, high electrical performance, high protection level, safety and reliability, and convenient maintenance. It is an ideal distribution device for low-voltage power supply systems in industries such as metallurgy, petroleum, chemical, electrical machinery, and light textile.
Main technical performance:
a) Rated working voltage: 380V, 660V.
b) Usage frequency: 50Hz.
c) Rated current: 1600-3150A for horizontal busbar systems, 400-800A for vertical busbar systems.
d) Rated short-term withstand current: 80KA effective value for horizontal busbar/50KA effective value for 1 second for vertical busbar/1 second.
e) Rated peak current: 175KA for horizontal busbar and 110KA for vertical busbar
f) Functional unit breaking capacity: 50KA
g) Peripheral protection level: IP40
