Description of letters and numbers in the low-voltage PDC
GGD: G(the first) stands for: AC low-voltage PDC
G(second) stands for: electrical components fixed wiring installation
D stands for: Power cabinet
GCK: G stands for: Closed switch cabinet
C stands for: withdrawable
K is for: Control Center
GCS: G stands for: Closed switchgear
C stands for: withdrawable
S stands for: Senyuan Electrical System
MNS is manufactured with technology transferred from ABB of Switzerland
JXF base box is also called electrical control box
XL-21: X stands for box
L stands for motivation
21 stands for design and development number
If there are only 4 meters on the meter door of the distribution cabinet, then there should be 3 ammeters (A, B, C) The meter dial letter is A. 1 block voltmeter, the switch below the voltmeter is a transfer switch, usually can only measure the voltage of two phases, with the transfer switch can measure the voltage of the other two phases.