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EVO STAR 60-800
16
3.1.6 BREAKERS
The U.P.S. has a system of breakers, which allows the user to carry out the necessary operations in order to use and
carry out maintenance on the equipment and to shut down the power supply if there is an emergency. A sticker placed
on the second access specifies the name of each switch near the switch itself. The by-pass switch contains a protection
device so, as it cannot be disconnected inadvertently. The user can remove this protection device if he/she decides to
carry out a manual by-pass.
1.
MAINS SWITCH
Break the mains supply, as specified in point 1 picture 3.1
2.
RESERVE SWITCH
Break the secondary power supply, as specified in point 7 picture 3.1
3.
MANUAL BY-PASS
Short-circuits the secondary input with the output
4.
OUTPUT SWITCH
Break the loading power supply.
5.
BATTERY SWITCH
Break, according to the model, one or both battery polarities.
3.1.7 FUSES
The U.P.S. includes a system with two fuse groups, both counting three fuses each which are able to disconnect
electrical power input (points 1 and 7 picture 3.1), when the electrical power is not within the set parameters. The type
of fuse, which is used, guarantee quick intervention and therefore are a guarantee also for optimum protection of the
internal devices. Furthermore, there is also a fuse on the line, which connects the U.P.S. to the batteries (point 6 picture
3.1), both for internal and external batteries.
Board A, (picture 12), to the user’s left, protects the state of the rectifier input, board B , to the user’s right, protects
the reserve line. Whereas the single-fuse board C protects the battery line. In UPS over 150 KVA fuses are on
connection bars without board, for battery there are two fuses.
REPLACING THE FUSES
CAUTION! : ALL CONNECTING PROCEDURES DESCRIBED IN THIS CHAPTER
MUST BE CARRIED OUT BY AUTHORIZED ELECTRICIANS OR BY QUALIFIED
TECHNICIANS.
CAUTION! : BEFORE REPLACING THE FUSES YOU MUST CARRY OUT THE
MANUAL BY-PASS PROCEDURE WITH THE U.P.S. DISCONNECTED (CHAPTER 5)
A nut screw fastens each fuse. When replacing a fuse you must unscrew the two knurled nuts corresponding to the
fuse, which must be replaced, remove the washers, replace the fuse and put back the washers and the knurled nut in this
order. IMPORTANT spare fuses are supplied together with the U.P.S. If they have to be purchased please make sure
that they are extra-fast fuses for the current same as on machine so as to guarantee total protection.
A
B
C
Picture 3.7
