Instrument Transformer

Model 2 Current Transformers ---

• Window Diameter 1.13" 
• Application: Generally for ammeter use only 
• Frequency: 50-400 Hz. 
• Insulation Class: 0.6 KV. BIL 10 KV full wave 
• Flexible leads are UL 1015, 105šC, CSA approved, #16 AWG, 24" long 
• Non-standard length to be specified 
• Terminals are brass studs No. 8-32 UNC with one flat washer, lockwasher and 

regular nut 
• Approximate weight 0.5 lb

Model 5 Current Transformers ---

• Window Diameter 1.56" 
• Application: ammeters, wattmeters, relays, and cross current compensation 
• Frequency: 50-400 Hz 
• Insulation Class: 0.6 KV, BIL 10 KV full wave 
• Flexible leads are UL 1015, 105š C, CSA approved. #16 AWG, 24" long 
• Non-standard length to be specified 
• Terminals are brass studs No. 8-32 UNC with one flat washer, lockwasher and regular nut 
• Approximate weight: 1.0 lb

Model 7 Current Transformers ---

• Window Diameter 2.50" 
• Application: ammeters, wattmeters, relays, and cross current compensation 
• Frequency: 50-400 Hz 
• Insulation Class: 0.6 KV, BIL 10 KV full wave 
• Flexible leads are UL 1015, 105°C, CSA approved, #16 AWG, 24" long 
• Non-standard length to be specified 
• Terminals are brass studs No. 8-32 UNC with one flat washer, lockwasher and regular nut 
• Approximate weight: 1.5lb

Model 500 Split Core Current Transformers ---

• Window Sizes: Available up to 10" x 30" 
• Application: ammeters and wattmeters 
• Frequency: 50-400Hz 
• Insulation Level: 0.6 KV, BIL 10 KV full wave 
• Continuous thermal current rating factor: 1.33 at 30°C amb.; 1.0 at 55°C amb 
• Terminals are 10-32 brass studs with one flatwasher, lockwasher and regular nut 
• Flexible leads are UL 1015, 105°C CSA approved, #16 AWG, 24" long are available 
• Approximate weight: 8 to 18 lbs

Models 600 & 601 Split Core Current Transformers ---

• Window Size: 600: 2" x 5.5"; 601: 4.5" x 4.5" 
• Application: For energy management systems and instrumentation 
• Frequency: 50-400Hz 
• Construction: core and windings are encased in U.L. approved plastic 
• Insulation Level: 0.6 KV, BIL 10 KV full wave 
• Terminals are 10-32 brass studs with one flatwasher, lockwasher and regular nut 
• Flexible leads are UL 1015, 105°C CSA approved, #16 AWG, 24" long are available 
• Approximate weight 1.5 lbs

Instrument Transformer Voltage Transformers 

Model 460 Voltage Transformer ---

• Primary Voltages: 69.4-600 
• Frequency: 60 Hz 
• Standard Secondary Voltage: 120 Volts 
• Insulation Level: 0.6 KV, BIL 10 KV full wave 
• Accuracy Class: 0.6 W, 1.2 X at 60 Hz 
• Thermal Rating: 150 VA at 30šC. amb., 100 VA at 55šC. ambient 
• Terminals are brass studs No. 10-32 with one lockwasher, flatwasher and regular nut 
• The core and coil assembly is encased in a thermoplastic shell and filled with resin 
• These transformers are designed for operation line-to-line. They may also be operated line-to-ground or line-to-neutral at reduced voltage, (58% of rated Volts) 
• It is desirable to use a 1.6 Amp fuse in the secondary to protect the transformer 
• With three exceptions these transformers are AHSl C57.13 group 1 
• The model 460-360 is designed specifically for 50 Hz operation 
• Each transformer has two plastic terminal covers 
• Approximate weight: 7.75 lbs

PTG3-1-60 & PTG3-2-60 Indoor Voltage Transformer ---

• Primary Voltages: 2400-4800; Secondary: 120 
• Accuracy Class: 0.3 WXMY, 1.2Z at 100% rated voltage with 120V based ANSI burden; 0.6 WXM, at 58% rated voltage with 69.3V based ANSI burden 
• Frequency: 60 Hz 
• Insulation Level: 5 KV, BIL 60 KV full wave 
• Thermal Rating: 750 VA at 30šC. amb. 500 VA at 55šC. ambient 
• Weight: Approximately 34 lbs., unfused 
• Primary terminals that are unfused are 1/4-20 brass screws with one flatwasher and lockwasher 
• 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. This test can also be carried out to lEC requirements if requested 
• The core and coil assembly is encased in a plastic enclosure and vacuum encapsulated in polyurethane resin 
• Thermal burden rating is for 120 Volt secondaries 
• Plated steel mounting base