APC 40 130KVA user manual Parallel Configuration for Increased Capacity Four UPSs

MGE Galaxy 5000

Figure 2-8: Parallel Configuration for Increased Capacity (Four UPSs)

These configurations have an external System Bypass Cabinet (SBC).

PCA INTN	PCA INTN
UPS 1	UPS 2
	Blue
	plug
20	20
SBC

Interconnections with the external system bypass cabinet (20):

◗Interconnect terminals 7, 8, 9, and 10 on the auxiliary terminal block TB2 in the system bypass cabinet to UPS terminal blocks XMS04/XMS05 pins 1, 2, 3, and 4 respectively.

◗Create a loop connection between the cabinet and the UPSs as shown in Figure 2-8.

Details of terminal block connections.

				TB2
7	8	9	10

	20	20
UPS 4		UPS 3
		Red

4	3	2	1
			Common

SBC		XMS04 /
		XMS05
TB2	7		1
	8		2
	9		3
	10		4

			plug
19	19	21	21	19	19	21	21

UPS 1	UPS 2
	Blue
	plug
UPS 4	UPS 3
	Red plug

Note: The interconnection cables for the SBC are not supplied

Exchange-current interconnections (19): Use the XMS02 and XMS03 connectors to create a loop between the UPSs (all the XMS02 and XMS03 connectors must be used).

CAN // interconnections (21): Daisy-chain the UPSs using the XMS06 and XMS07 connectors. Fit a blue plug on the first UPS unit and a red plug on the last UPS (all the XMS06 and XMS07 connectors must be used).

Note: The supplied cables are 33 ft long. To ensure sufficient isolation of exchange-current, CAN and external bypass cabinet cables, they must be run separately from the power cables.

2 — 6 Setup and Installation 86-174010-00 B00