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TM
6000 : Specification guide
Parallel UPS, three-phase, 250 to 3000 kVA*
* Power rating for an N+1 redundant configuration
APC By Schneider Electric Edition - 03/2009 Spec. E - 6
3.5 - Limitation of harmonics upstream of the UPS
The UPS system shall not draw a level of harmonic currents that could disturb the upstream AC system, i.e. it shall
comply with the stipulations of guide IEC 61000-3-4.
To that end, it shall be possible to equip each rectifier/charger input with a filter of the type …[compensated LC /
non-compensated LC / with contactor / double-bridge / phase shifting]...
If necessary, it shall be possible to use an electronic active filtering system to obtain, at the normal AC input, the
following levels, constant from 50% to 100% load:
ω total harmonic current distortion (THDI) upstream of the rectifier/charger not exceeding 4%;
ω input power factor (pf) greater than 0.94.
3.6 - Efficiency
Overall efficiency shall be greater than or equal to:
ω 95% at full rated load (In);
ω 93% at half rated load (In/2).
3.7 - Noise level
The noise level for each unit, measured as per standard ISO 3746, shall be less than:
.........................................................................................................................................................................
ω 69 dBA (
)
for 250 and 300 kVA units).
ω 72 dBA (
)
for 400, 450, 500 and 600 kVA units).
.........................................................................................................................................................................
4 - AC sources
The UPS shall be designed to receive power from the sources listed below.
4.1 - Normal AC source
(rectifier input)
The normal AC source supplying the UPS shall, under normal operating conditions, have the following
characteristics:
ω rated voltage: 380 - 400 or 415 volts rms at full rated load Pn;
ω voltage:
volts, ± 15%;
ω number of phases: 3 + N + earth;
ω frequency:
Hz ± 10%.
4.2 - Bypass AC source
(static-bypass input, if separate from rectifier input)
The bypass power supplying the UPS in the event of an inverter shutdown (maintenance, failure) or an overload
(short-circuit, heavy inrush currents, etc.) shall have the following characteristics:
ω voltage: /
volts, ± 10%;
ω number of phases: 3 + N + earth; (a non-distributed neutral is possible);
ω frequency:
Hz ± 5% (adjustable up to ± 2 Hz).
Outside these tolerances, it shall be possible to supply the load, but in downgraded mode.
5 - Electrical characteristics
5.1 - Rectifier and charger
5.1.1 - Supply
The rectifier and charger module shall be supplied via the normal AC input (see § 4. AC sources) and shall have
the characteristics presented below.
5.1.2 - Inrush current
A device shall be provided to limit inrush currents.
When AC power fails and during genset start, the rectifier shall limit the power drawn to 70% of its rating for ten
seconds. The remaining 30% shall be supplied by the battery.
5.1.3 - Battery-current limiting
For long battery life, an electronic device shall automatically limit the charging current to the maximum value