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Class 8839 Econoflex™ AC Drives
Sample Specifications
208
09/2003
© 2000–2003 Schneider Electric All Rights Reserved
C. Provisions shall be included for locking the disconnect in the OFF position with a padlock.
D. All enclosure and heatsink fans shall be front accessible and not require the removal of the AC drive
power converter.
2.04 Motor Data
A. The AC Drive shall be sized to operate the following AC motor:
• Motor horsepower [ ]
• Motor full load ampere [ ]
• Motor rpm will be [3600] [1800] [1200] [900] at 60 Hz.
• Motor voltage will be [208] [230] [460]
• Motor service factor will be [1.15] [1.25]
• NEMA MG1 [Part 30] [Part 31]
2.05 Application Data
A. The AC Drive shall be sized to operate a Variable Torque load.
B. The speed range shall be from a minimum speed of 1.0 Hz to a maximum speed of 60 Hz.
2.06 Environmental Ratings
A. The AC Drive shall meet IEC 60664-1 and NEMA ICS 1 Annex A Standards.
B. The AC Drive shall be designed to operate in an ambient temperature from 0 °C to 40 °C
(32 °F to 104 °F).
C. The storage temperature range shall be –25 °C to 65 °C (–13 °F to 149 °F).
D. The maximum relative humidity shall be 95% at 40 °C (104 °F), non-condensing.
E. The AC Drive shall be rated to operate at altitudes less than or equal to 3,300 ft (1000 m). For
altitudes above 3,300 ft (1,000 m), de-rate the AC Drive by 1% for every 330 ft (100 m).
F. The AC Drive shall meet the IEC 60721-3-3-3M3 operational vibration specification.
2.07 Ratings
A. The AC Drive shall be designed to operate from an input voltage of [460 Vac (±) 10%]
[230 Vac (±) 10%] [208 Vac (±) 10%].
B. The AC Drive shall operate from an input frequency range of 60 (±) 5%
C. The displacement power factor shall not be less than 0.98 lagging under any speed or load
condition.
D. The efficiency of the AC Drive at 100% speed and load shall not be less than 97%.
E. The variable torque rated AC Drive over current capacity shall be not less than 110% for 1 minute.
F. The output carrier frequency of the AC Drive shall be programmable at 0.5, 1, 2, 4 or 8, kHZ. In
addition, the output carrier frequency shall be randomly modulated about the selected frequency.
2.08 Protection
A. Upon power-up, the AC drive shall automatically test for valid operation of memory, loss of analog
reference input, loss of communication, DC-to-DC power supply, control power, and pre-charge
circuit.
B. The enclosure shall provide a fully coordinated [5 kAIC] [10 kAIC] [22 kAIC] rating marked on the
enclosure nameplate. Short circuit coordination to UL508C Power Conversion Equipment and
NEMA ICS 7.1.
C. The AC Drive shall be protected against short circuits, between output phases and to ground.
D. The AC Drive shall have a minimum AC undervoltage power loss ride-through of 200 milliseconds
(12 cycles).
E. The AC drive shall have a programmable ride through function, which will allow the logic to maintain
control for a minimum of one second (60 cycles) without faulting.