Voltage Transformers are encased in a thermoplastic case with the core and windings encapsulated in resin. They are designed for line to line operation but may also be used in a line to neutral or line to ground configuration at 58% of rated voltage.
All transformers with rated voltages 346 Volts and below are ANSI C57.13 Group 1. All transformers rated for 480 and 600 Volt are Group 2.

Model 460 Voltage Transformer - 120 Volt Secondary
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Thermal Rating: 150 VA @ 30 Deg. C.
Model 460 Voltage Transformer - 240 Volt Secondary
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Accuracy Class: 0.6% @ 7.5VA
Thermal Rating: 150 VA @ 30 Deg. C.
Model 467 Voltage Transformer - 120 Volt Secondary
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Accuracy Class: +/-1% up to 5VA at 1.0 and 0.95 P.F.
Thermal Rating: 40 VA @ 30 Deg. C., 27 VA @ 55 Deg. C.
Model 468 Voltage Transformer - 120 Volt Secondary
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Accuracy Class: +/-0.6% up to 7.5VA and +/-1.5% @ VA
Thermal Rating: 75 VA @ 30 Deg. C., 50 VA @ 55 Deg. C.
Model 2VT469 Voltage Transformer - 120 Volt Secondary
Model 2VT469 is a two transformer assembly in one case with all terminals accessible for an Open Delta Connection.
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Accuracy Class: +/-1% at all burdens up to 5VA at 1.0 and 0.95 P.F.
Thermal Rating: 40 VA @ 30 Deg. C., 27 VA @ 55 Deg. C.
Model 3VTL460 3 Phase Voltage Transformer - 120 Volt Secondary
Frequency: 60Hz
Insulation Level: 600 Volt, 10kV BIL Full Wave
Accuracy Class: 0.6W, 1.2 X at 60Hz (Per Phase)
Thermal Rating: 150 VA @ 30 Deg. C., 100 VA @ 55 Deg. C.