LEGRAND KEOR HP Serie Installation Et Démarrage page 26

and to the minimum current (min Isc) that is needed to determine the maximum length of the
line protected. The protection against short-circuit must operate on the line before any thermal
and electrothermal effects of the overcurrents may damage the cable and relevant connections.
During the electrical installation take particular care to respect the phase rotation. The
terminal boards for cables connection are positioned at the front of the UPS, under the
breakers. To access the terminals remove the front protection, extracting the fixing bolts.
Mains connection
The connection to the mains must be carried out with protection fuses between the
mains and the UPS.
The use of differential protection devices in the line supplying the UPS is
unadvisable. The leakage current to ground due to the RFI filters is rather high
and it can cause spurious tripping of the protection device.
According to CEI EN62040-1 standard, in order to take into account the UPS'
leakage current, residual current devices having adjustable threshold can be used.
Power (kVA)
Input Fuses (A)
Input cables
2
(mm
)
Ground cables
Output cables
Battery cables
26 OMD10073 REV. D
Installation and start-up of UPS Keor Hp 60-160kVA
Installation et démarrage de l'UPS Keor Hp 60-160 kVA
Installazione e avviamento UPS Keor Hp 60-160kVA
Electrical connection data
Rectifier
Bypass
Rectifier
Bypass
2
(mm
)
2
(mm
)
2
(mm
)
60 80 100
3x125 3x150 3x200
3x150 3x200 3x315
3x35 3x50 3x70
4x35 4x50 4x70
16 25 35
4x35 4x50 4x70
2x35 4x50 4x70
125 160
3x250 3x315
3x315 3x400
4x95 3x120
4x95 4x120
50 70
4x95 4x120
2x95 2x120