Variable transformer
ESS 318
Characteristics
General data
Einstellbare Ringkern-Spartransformatoren der Baureihe ESS dienen zur verlustarmen Erzeugung von netzverbundenen Wechselspannungen. Durch dieses Prinzip erfolgt stets eine optimale Anpassung an den Verbraucher, was geringste Leistungsverluste bedeutet. Die konstruktive Ausführung des Stromabnehmers sorgt für eine durchgehend sichere Kontaktgabe.
Benefits
› Continuous adjustment of alternating voltage from zero to the maximum value
› Self-cleaning of exposed contact tracks
› 4-point flange mounting
› Applicable to three-phase current when mechanically coupling three variable transformers
› 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 |
