Variable transformer
ESS 318
Characteristics
Benefits
› Stepless adjustment of the AC voltage from zero to the maximum value
› Self-cleaning of the exposed contact tracks
› 4-point flange mounting
› Rotary knobs and scales optionally available
| Product | Variable transformer |
| Order number | ESS 318 |
| Series | ESS |
| Power | 4,140 VA |
| Phases | 1 |
| Frequency range | 50 Hz to 60 Hz |
| EN Insulation class | B (130°C) |
| Duty Cycle | 100 % |
| Wire material | Copper |
General
| Short circuit proof | not short-circuit proof |
| Switching group | Ia0 |
| Cooling type | AN |
Environment
| Ambient temperature | -20 °C to 45 °C / -4 °F to 113 °F |
| Max. installation height | 2,000 m / 6,562 ft |
Protection and Safety
| Protection type | IP 00 |
| Protection class (prepared) | I |
| Degree of contamination | 1 |
Electrical Connections
| Input terminal | Screw terminal |
| Output terminal | Screw terminal |
Size and Weight
| Width | 153 mm / 6.02 in |
| Height | 231 mm / 9.09 in |
| Depth | 243 mm / 9.57 in |
| Weight | 13.555 kg / 29.884 lbs |
