Electrical Connections; Accessing The Ups Terminals - Siel SAFEPOWER-EVO-HF Manual De Instalacion Y Uso

E
LECTRICAL
A
CCESSING THE
The following operations must be performed while the UPS is disconnected from the mains, switched
off and all the isolating switches on the equipment are open. Before performing connection, open all
the machine isolating switches and check that the UPS is completely isolated from all power sources:
battery and AC power line. In particular, check that:
- the UPS input line is completely isolated;
- that isolating switch/battery box fuse is open;
- all the UPS isolating switches (SWIN, SWBY, SWOUT and SWMB) are in the open position;
- no dangerous voltages are present (use a multimeter).
The first connection to be performed is the protective wire (earth cable) which has to be inserted into
the terminal labelled PE. The UPS must operate with the earthing system connected.
The input neutral must always be connected.
Do not connect the output neutral to the input neutral.
CAUTION: a 4-wire three-phase distribution system is required.
The standard version of the UPS must be connected to a 3 phase + neutral + PE (protective earth)
power line (TT, TN or IT); it is therefore necessary to respect the rotation of the phases.
TRANSFORMER BOXES (optional) are available for converting the distribution systems from 3 to 4
wires.
CAUTION:
conductor can reach a value equal to 1.5 times the value of the phase current. Dimension the
input/output neutral cable appropriately taking this fact into account.
ATTENTION:
CAUTION:
cables or cables with tin-plated eyes for the connections.
IV333 Rev.000 SIEL S.p.A.
Data di emissione: 2011-09-28
C
ONNECTIONS
UPS
TERMINALS
If a three-phase distorting load is connected to the output, the current on the neutral
The length of the Battery box cable must not exceed 10 meters
The component material of the connection terminals is aluminium. Use only aluminium
Pag. 61 di 246 + FR