APC 7000 dimensions Inverter, Automatic bypass

Page 5

Specification guide

Single UPS, three-phase, 160 to 500 kVA (cont.)

5.3. Inverter

The inverter shall be sized to supply a rated load of …[160/200/250 / 300 / 400 / 500]… kVA at 0.9 PF and shall satisfy the specifications listed below.

5.3.1.Output voltage

ω Rated voltage

…[380 / 400 / 415 / 440]… volts rms, adjustable via the user interface (see section 10), within tolerances of +/- 3% in order to take into account voltage drops in the cables.

ω Number of phases

3 phases + neutral + earth.

ω Steady-state conditions

Variations in the rated voltage shall be limited to ± 2% for a balanced load between 0 and 100% of the rated load, whatever the voltage level on the normal AC source and the DC voltage level, within the limits defined in sections 4.1 and 5.1.4.

ω Voltage variations for load step changes

Output voltage transients shall not exceed ± 1% of rated voltage for 0 to 100% or 100 to 0% step loads. In all cases, the voltage shall return to within steady-state tolerances in less than 100 milliseconds.

ω Unbalanced conditions

For a load unbalance between phases, the variation in the output voltage shall be less than 1%.

5.3.2.Output frequency

ωRated frequency -50 or 60 Hz.

ωVariations in the free-running frequency - ± 0.5 Hz.

5.3.3.Synchronization with bypass power

ω When bypass power is within tolerances

To enable transfer to bypass power (see conditions in section 5.4), the inverter output voltage shall be synchronized with the bypass source voltage whenever possible. To that end, during normal operation, a synchronization system shall automatically limit the phase deviation between the voltages to 3 degrees, if the bypass source frequency is sufficiently stable (within adjustable tolerances of 0.5% to 8% with respect to the rated frequency).

ω Synchronization with an external source

It shall be possible to synchronize with all types of external source.

ω Autonomous operation following loss of synchronization with bypass power

When the bypass source frequency deviates beyond these limits, the inverter shall switch over to free-running mode with internal synchronization, regulating its own frequency to within ± 0.02 Hz. When bypass power returns to within tolerances, the inverter shall automatically resynchronize.

ω Variation in frequency per unit time

To avoid transmitting to the inverter any excessive frequency variations on the bypass AC source when it is within tolerances, inverter frequency variations per unit time (dF/dt) shall be limited to 1 Hz/s or 2 Hz/s (user defined).

5.3.4.Overload and short-circuit capacity

The UPS shall be capable of supplying for at least:

ω10 minutes a load representing 125% of the rated load

ω1 minutes a load representing 135 % of the rated load

ω30 second a load representing 150% of the rated load.

ωFor the specified power rating of …[ 160 / 200 /250 / 300 / 400 / 500 ]… kVA, the inverter shall be capable of current limiting to a peak capacity of ... [290 / 235 / 277 / 230 / 234 / 245% ] ... for 150 ms to allow highly disturbed transient operating states without transferring the load to the bypass.

ωThe overload capacity shall be capable of taking into account temperature conditions for more than ten minutes, by allowing a continuous, 10% overload when the temperature is less than or equal to 20°C.

5.3.5. Higher power ratings for lower temperatures

It shall be possible to increase the power rating when the temperature is less than 35°C. The rating can be raised by +3% for 30°C, +5% for 25°C and +8% for 20°C.

5.4. Automatic bypass

5.4.1. Load transfer to the automatic bypass

The UPS shall be equipped with an automatic bypass comprising a static switch. Instantaneous transfer of the load from the inverter to bypass power and back shall take place without a break or disturbance in the supply of power to the load, on the condition that the bypass source voltage and frequency are within the tolerances specified in section 4.2 and that the inverter is synchronized.

Transfer shall take place automatically in the event of a major overload or an internal inverter fault. Manually

APC by Schneider Electric

Edition - 01/2010

Single UPS spec - p. 5

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Contents Electrical characteristics Sizing and general characteristicsMechanical characteristics Battery managementOperating principles UPS definitionSizing and general characteristics AC sources Electrical characteristicsAutomatic bypass InverterMechanical characteristics UPS not including battery SafetyEnvironment conditions ProtectionUser interface and communication Battery managementControls CommunicationStatus indications with mimic panel Standard communicationStandards and tests Quality system and test proceduresWarranty ServicesElectrical diagram Further servicesBattery management and protection BatteryAppendix. Check list Type of UPSBypass functions InverterEfficiency User interfaceCertification CommunicationOperation, Maintainability Availability

7000 specifications

The APC 7000, a renowned product from APC by Schneider Electric, represents a significant advancement in the realm of power conditioning and management. This high-performance uninterruptible power supply (UPS) is engineered to provide reliable and comprehensive protection for critical equipment in various environments, from small businesses to large enterprises.

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