MGE UPS Systems Galaxy PW Instrukcja Użytkownika Pobierz pdf (Strona 13)

5

different types of Galaxy

PW™ systems

single-UPS unit

Fig. 2

parallel UPS system

See figure 3 showing two parallel-connect-

ed (redundant) UPS units.

Fig. 3

When increased power is required (two to

four parallel units), an external bypass

must be added (see figure 4).

Fig. 4

isolation and protection

devices

(See figure 1 on previous page):

■ Q1 (Molded circuit breaker NA):

❏ isolation of the rectifier/charger (A) from

the normal AC source (1);

❏ rectifier/charger (A) start-up;

■ QF1 (circuit breaker):

❏ battery (D) protection and isolation;

■ Q5N (switch):

❏ isolation of the UPS (B) from the load;

■ Q4S (switch):

❏ isolation of the static bypass (C) from

the bypass AC source (2);

■ Q3BP (switch):

❏ bypass switch for maintenance;

■ FUE (fuses):

❏ protection of the rectifier/charger (A)

from the normal AC source;

■ FUS (fuses):

❏ protection of the inverter (B) from the

load.

Note:

■ switch Q3BP is lock on open position on

parallel UPS systems constituted to

increase available power.

external bypass for parallel

UPSs and the hot-swap

option

See figure 4.

■ Q5N: isolation of the inverters of all the

parallel UPS systems from the load;

■ Q3BP: bypass for maintenance.

2

1

Q3BP

Galaxy 1

Galaxy 2

2

1

Galaxy 3

2

1

Galaxy 4

2

2

Q5N

1

2

1

Q3BP

S

Galaxy 1

Galaxy 2

2

2

Q5N

1

1

2

AB

C

D

User’s Manual

Introduction

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