Isolating transformer, three-phase

TT3 16-4-4

Characteristics

Benefits

 Safe galvanic isolation

 Patented assembly technology to lower heat losses

 Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation

 Secondary side ±5 % tappings for voltage adjustment

 Fixed, contact protected screw connection terminals complying with UVV BGV A3

 Multifunctional fixing rails with 12 oval slots

 Enlarged fixing rail for easy installation from above

 Integrated crane eyes

Product Search
Product Isolating transformer, three-phase
Order number TT3 16-4-4
Series TT3
Power 16,000 VA
Input 3 x 400 V
Output 3 x 380 V • 24.4 Aac
or 400 V • 23.1 Aac
or 420 V • 22 Aac
Phases 3
Frequency range 50 Hz to 60 Hz
Short-Circuit Losses 235 W
No-Load Losses 270.3 W
Short circuit voltage uk 1.5 %
EN insulation class F (155°C)
UL Insulation class class 155
Duty Cycle 100 %
Wire material Copper
Efficiency 96.9 %
General
Short circuit proof not short-circuit proof
Switching group Dyn5
Unbalanced load 100.00 %
Cooling type AN
Environment
Ambient temperature -20 °C to 50 °C / -4 °F to 122 °F
Max. installation height 2,000 m / 6,562 ft
Protection and Safety
Protection type IP 00
Protection class (prepared) I
Overvoltage category II
Degree of contamination 2
Electrical Connections
Input terminal Screw terminal
Output terminal Screw terminal
Terminal PE Screw plug-in connection
Size and Weight
Width 550 mm / 21.65 in
Height 510 mm / 20.08 in
Depth 267 mm / 10.51 in
Weight 154 kg / 339.511 lbs
Low Voltage Directive EN 61558-2-4

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