48 CTV-PRB004-EN
Medium-Voltage Starter Types (10,000–13,800 Volts)
Medium Voltage—Autotransformer (10–13.8 kV)
Autotransformer Starter (10,000–13,800 volts)
Starting sequence
Refer to the autotransformer starting sequence (“Starting sequence,” p. 38).
Standard features
• 4 kVA control-power transformer
• Primary and secondary current transformers (CTs)
• Potential transformers (PTs)
• Grounding provisions
• Bolted line-power connections
• Bolted load-side connections for remote starters
• Standard motor protection
Dimensions
Typical dimensions for remote-mounted autotransformer starters are shown in Figure 37, p. 48.
PFCCs, if required, are housed in a 36-inch wide auxiliary cabinet (not shown). Always consult the
submittal drawings for as-built dimensions.
Environmental specification
• Designed, developed and tested in accordance with IEC 60470, 62271-200
• NEMA 1 enclosure as standard
• Operation from sea level to 6,000 ft (1,829 m)
• Operating ambient temperature range 32°F to 104°F (0°C to 40°C)
• Relative humidity, non-condensing 5 percent to 95 percent
• Non-operating ambient temperature range -40°F to 158°F (-40°C to 70°C)
• Voltage utilization range ±10 percent
Figure 37. Remote-mounted, autotransformer dimensions
96"
36"
132"
INCOMING
LINE
LOW-VOLTAGE
SECTION
MAIN BUS
MAIN BUS
MAIN BUS
CTV-PRB004.book Page 48 Sunday, December 18, 2011 6:39 PM
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