460-480 Tyco Electronics, 460-480 Datasheet - Page 122

• Manufacturer Part Number: 460-480
• Description: Voltage Transformer
• Manufacturer: Tyco Electronics
• Series: 460r

Specifications of 460-480

• Turns Ratio: 4
• Transformer Mounting: Chassis
• Voltage Ratio: 480
• Primary Voltages: 480V
• Power Rating: 150VA
• Output Voltage: 120V
• Mounting Type: Foot Mounted
• Transformer Type: Voltage
• Lead Free Status / RoHS Status: na

NOTE:
line-to-ground on ungrounded system
cannot be considered to be grounding
transformers and must not be operated
with the secondaries in closed delta
because excessive currents may flow in
the delta. For further details see
ANSI/IEEE C57.13.
*Not recognised in ANSI/IEEE C57.13
122
Voltage transformers connected
Voltage Transformer Groups
Transformers for application with 100% of rated primary voltage connected to the primary
terminate either line-to-line or line-to-ground. These transformers are capable of operating
at 125% of rated volts in emergency conditions, but cannot have their thermal burden
rating exceed 65% of rated volt amperes and 105°C Ave. winding temperature. This will
result in a reduced life expectancy. Consult the factory for details. Continuous operation
at 110% of rated voltage is permissible, provided that the thermal burden rated volt amperes
is not exceeded.
Transformers are for line-to-line connection, but may be connected line-to-neutral at a
voltage of the rated line volts divided by the square root of three.
Continuous operation at 110% of rated voltage is permissible, provided that the thermal
burden rated volt amperes is not exceeded.
Transformers are for line-to-ground connection, indoors only. The neutral terminal is
insulated to withstand a test voltage of 10kV. They may be continuously operated at 110% of
rated voltage, provided that the thermal burden rated volt amperes is not exceeded. Group
4A transformers may be operated at 125% of rated primary voltage, under emergency
conditions, provided that the burden does not exceed 65% of the rated thermal burden,
with a limit of 75°C temperature rise. This will result in a reduced life expectancy. Consult
the factory for details.
2400 for 4160 GND Y
4200 for 7200 GND Y
4800 for 8320 GND Y
7200 for 12470 GND Y
8400 for 14560 GND Y
4200 for 4160 GND Y
4800 for 4800 GND Y
7200 for 7200 GND Y
8400 for 8400 GND Y
11000 for 11000 GND Y
12000 for 12000 GND Y
13200 for 13200 GND Y
14400 for 14400 GND Y
840 for 1455Y*
1200 for 2078Y*
2400 for 4160Y
4200 for 7280Y
4800 for 8320Y
7200 for 12470Y
8400 for 14560Y
12000 for 20785Y
14400 for 24940Y
2400 for 2400Y
3300 for 3300Y*
4200 for 4200Y*
4800 for 4800Y
7200 for 7200Y
8400 for 8400Y*
11000 for 11000Y
12000 for 12000Y
13200 for 13200Y
14400 for 14400Y
18000 for 1800Y*
21000 for 21000Y*
24000 for 24000Y
27600 for 27600Y*
34500 for 34500Y*
Rated Primary Voltage for Rated
System Voltage Line-To-Line
Rated Primary Voltage for Rated
System Voltage Line-To-Line
Rated Primary Voltage for Rated
System Voltage Line-To-Line
Group 4A For Operation At 100% Rated Voltage
Turns Ratio
Turns Ratio
Turns Ratio
300:1
100:1
200:1
120:1
240:1
100:1
100:1
100:1
100:1
120:1
40:1
120:1
150:1
20:1
60:1
70:1
175:1
35:1
40:1
60:1
40:1
60:1
110:1
30:1
40:1
60:1
110:1
20:1
70:1
70:1
10:1
20:1
70:1
35:1
35:1
35:1
7:1
Basic Impulse Insulation
Level (Kv Crest)
*60 or 45*
75
75
110
110
60 or 45
60 or 45
75
75
110
110
110
110
Basic Impulse Insulation
Level (Kv Crest)
125 or 150
Basic Impulse Insulation
Level (Kv Crest)
45
60 or 45*
60 or 45*
75 or 110*
75 or 110*
95 or 110*
95 or 110
95 or 110
95 or 110
125*
125*
125 or 150
150 or 200
150 or 200
*45*
*45*
125 or 150
60 or 45*
60 or 45*
75
75
95 or 110
95 or 110