Installation and start-up of UPS Keor Hp 200-300kVA
Installation et démarrage de l'UPS Keor Hp 200-300 kVA
Installazione e avviamento UPS Keor Hp 200-300kVA
26
OMD36055 REV. D
current (max Isc) that is needed to determine the breaking power of automatic circuit breakers,
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.
Electrical connection data
Power (kVA)
200 250 300
Input Fuses (A)
Rectifier 3x400 3x500 3x630
Bypass
3x500 3x500 3x630
Input cables
(mm
2
)
Rectifier 3x150
3x185
2x3x95
Bypass 4x185
2x4x120
2x4x150
Ground cables (mm
2
)
95
120
150
Output cables (mm
2
)
4x185
2x4x120
2x4x150
Battery
cables
(mm
2
)
2x185
2x240
2x2x150
