460-480 Tyco Electronics, 460-480 Datasheet - Page 127

• 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

Models PTW3-1-60 and PTW3-2-60
• Primary terminals that are unfused are 1/4-20 brass screws with one flatwasher and lockwasher.
• Primary terminals that are fused are 1/4-20 brass screws with one flatwasher and
• Secondary terminals are No. 10-32 brass screws with one flatwasher and lockwasher.
• The transformers are tested for partial discharge to Canadian Standards CAN 3-C13-M83.
• The core and coil assembly is encased in a plastic enclosure and vacuum encapsulated in
• Thermal burden rating is for 120 Volt secondaries.
• Plated steel mounting base.
• Fuses have 1" Dia Caps and 5" clip centres.
• Switchgear style is similar to fused style. No fuse or fuse clip is provided, but inserts for
(a) Two fuse transformers should not be used for Y connections. It is preferred practice to
(b) Voltage transformers connected line-to-ground cannot be considered to be grounding
(c) See page 1, item 2 for ferroresonance considerations. Values in table are in ohms,
(d) Fuse clips noted as “CCS” or “CS” accept fuses with 1" Dia. caps and 5" clip centres. Fuse
NOTE:
maximum system voltage level.
Group
Group
1
2
2
2
4A
4B
4B
lockwasher and two nuts.
This test can also be carried out to IEC requirements if requested.
polyurethane resin.
fuse clips are supplied.
UNFUSED
connect one lead from each voltage transformer directly to the neutral terminal, using a fuse
in the line side of the primary only. By using this connection a transformer can never be
made “live” from the line side by reason of a blown fuse in the neutral side. For continuous
operation the transformer primary voltage should not exceed 110% of rated value.
transformers and must not be operated with the secondaries in closed delta because
excessive currents may flow in the delta.
clips noted as “CCL” or “CL” accept fuses with 1.63" Dia, caps and 5.88" clip centres.
It is recommended the system line-to-line voltage not exceed the transformer
Primary
Voltage
*2400
*4200
*4800
*2400
*4200
*4800
3300
One Bushing (b)
Two Bushing (a)
Ratio
20:1
30:1
35:1
40:1
20:1
35:1
40:1
TWO FUSE
Secondary
Voltage
120
110-50Hz
120
120
120
120
120
PTG3-2-60-242
PTG3-2-60-332
PTG3-2-60-422
PTG3-2-60-482
Unfused
R
(C)
230
230
230
FR
ONE FUSE
PTG3-2-60-242FF
PTG3-2-60-332FF
PTG3-2-60-422FF
PTG3-2-60-482FF
Fuses
PTG3-1-60-242F
PTG3-1-60-422F
PTG3-1-60-482F
Fuses
SWITCHGEAR STYLE
Catalogue Numbers
PTG3-2-60-242CC Sor CCL
PTG3-2-60-332CCS or CCL
PTG3-2-60-422CCS or CCL
PTG3-2-60-482CCS or CCL
PTG3-1-60-242CS or CL
PTG3-1-60-422CS or CL
PTG3-1-60-482CS or CL
Fuse Clips Only (d)
Fuse Clips Only (d)
Catalogue Numbers
Frequency:
60Hz
Standard Secondary Voltage:
120 Volts
Maximum System Voltage:
5.6kV, 60kV BIL full wave
Accuracy Class:
0.3 WXMY, 1.2Z at 100% rated voltage
with 120V based ANSI burden. 0.6 WX,
1.2MY at 58% rated voltage with 69.3V
based ANSI burden.
Thermal Rating:
750VA total 30°C amb
500VA 55°C amb
Weight:
Approximately 34 lbs, unfused
CSA 223647
Approvals
UL 257877
Switchgear Style
PTG3-2-60-242SS
PTG3-2-60-332SS
PTG3-2-60-422SS
PTG3-2-60-482SS
PTG3-1-60-242S
PTG3-1-60-422S
PTG3-1-60-482S
Switchgear Style
129