Alpha Technologies Continuity: 6K_10K - Manual (Page 47)

0170012-J0 Rev A Page 45
Figure 4 Parallel UPS with Maintenance Bypass Box
CB 1 Utility Input Breaker
L12 N1 G1 L21 N22 G2
OUTPUT INPUT
ON
OFF S1 Ext. Battery
+
-
G
P ar al le l W or k C om m .
TN V C om m uni ca tion N et w or k
B us N ot In tended
to
EPO
RS232
To UPS Battery
To Extended Battery
-
G
+
-
G
+ DC Breaker 30A 250Vdc
BYPASS
INV UPS INPUT
L1 N1 G1
INPUT UTILITY
L2 N2 G
OUTPUT UPS
L11 N11 G
OUTPUT TR
L22 N22
Sensor for MTBS
T2
T2
T2
T2
UPS
BYPASS
L1 N1 G1
INPUT
L2 N2 G2
OUTPUT
CAUTION:
BEFORE SWITCHING TO MAINTENANCE MODE,
1. MAKE SURE UTILITY INDICATOR LIGHTS UP. PROCESS THE FOLLOWING STEPS FIRST:
2. PUSH TEST BUTTON, AND MAKE SURE UPS SWITCHES TO BYPASS MODE. 3. TURN THE SWITCH FROM UPS TO UTILITY.
TEST UTILITY
T2
T2
T2
T3
CBi
CBi
C
B1
C
B2
C
Bo
C
Bo
UTILITY LOAD
MTBS BOX
T3
To UPS Battery
To Extended Battery
-
G
+
-
G
+ DC Breaker 30A 250Vdc
BYPASS
INV UPS INPUT
L1 N1 G1
INPUT UTILITY
L2 N2 G
OUTPUT UPS
L11 N11 G
OUTPUT TR
L22 N22
Sensor for MTBS
L12 N1 G1 L21 N22 G2
OUTPUT INPUT
ON
OFF S1 Ext. Battery
+
-
G
P ar al le l W or k C om m .
TN V C om m uni ca tion N et w or k
B us N ot In tended t
o
EPO
RS232
RS232 Parallel Work Comm. Bus
ON OFF
S1
Set the two terminal resistors of two(2) or
four(4) UPS to at "On" positions.
CB 1 Utility Input Breaker