The document is a single line diagram for an automatic transfer switch (ATS) panel and automatic power factor correction (APFC) panel. It shows the key components including 4P air circuit breakers, current transformers, relays, meters, switches and fuses that make up the ATS and APFC panels. It also includes specifications for the busbars and cables connecting the components as well as earthing details.

1. 1250A 35kA
4P ACB
with UVT
I>
M
1250A 35kA
4P ACB
with UVT
I>
M
MECHANICAL AND
ELECTRICAL INTERLOCK
CT 1250/5A
CL1 15VA
X3
TO APFC RELAY
CT 1250/5A
CL1 15VA
x3 DPA
ENERGY ANALYZER
0.5S-Accuracy
TO SCADA
RS485
400V 1250A 50Hz 3Ph TPN TINNED COPPER BUSBAR 36 kA/1 Sec
2R 40X10mm Cu(N,L1,L2,L3) 2R 10x10mm Cu(E)
TO MDB
FUSE 2A 230VAC
RD YE BU
230VAC 230VAC
CT 1250/5A
CL1 15VA
x3
ASS
4POSITION
AMMETER
0~1500A
A
FUSE 2A
VSS
7 POSITION
V
VOLTMETER
0~500V
CT 1250/5A
CL-5P10 15VA
X4
NUMERICAL RELAY
50/51, 60,
50N/51N, 59N
86,50GS
47,67N,50Arc
FUSE 2A
CT 1250/5A
CL-5P10 15VA
X4 NUMERICAL RELAY
FUSE 2A
FUSE 2A FUSE 2A
ATS
Controller
FUSE 2A 230VAC
RD YE BU
230VAC 230VAC
FUSE 2A
230VAC
RD
YE
BU
230VAC
230VAC
DPA
ENERGY ANALYZER
0.5S - Accuracy
TO SCADA
RS485
CT 1250/5A
CL1 15VA
x3
100 kA SPD
TYPE 1
CLASS 1
125A
HRC
FUSE
G
400A
4P
MCCB
25kA
I>
160kVar ON OFF TRIP
ON OFF
M O S
ON OFF TRIP
ON OFF
16mm2 (D), 3m(L)
Bonded Cu Earth Rod
(BS EN 50164-2) UL
Certified Resistance
<5ohms
COMMERCIAL
POWER SUPPLY
GENERATOR
POWER SUPPLY
SINGLE LINE DIAGRAM FOR AUTOMATIC TRANSFER SWITCH (ATS) PANEL AND APFC PANEL
DESIGNED BY : GHA SAJEEWA LAKMAL
50/51, 60,
50N/51N, 59N
86,50GS
47,67N,50Arc
7%
Dtune
Reactor