Toroidal transformers, safety isolating transformer
RKD 20/2x18
Characteristics
General data
The toroidal transformers of the RKD series enable space-saving use due to minimal size with maximum performance. The low magnetic stray field does not affect surrounding components and ensures excellent temperature behavior. The connections can be soldered directly onto a PCB.
Benefits
› Safety isolating transformer according to EN (IEC) 61558-2-6
› Lightweight
› Dual input and dual output coils for series or parallel connection
› Minimal no-load losses
› Very low noise field
| Product | Toroidal transformers, safety isolating transformer |
| Order number | RKD 20/2x18 |
| Series | RKD |
| Power | 20 VA |
| Input | 2 x 115 V |
| Output | 2 x 18 V • 0.55 Aac |
| Phases | 1 |
| Frequency range | 50 Hz to 60 Hz |
| No-Load Losses | 0.33 W |
| EN Insulation class | B (130°C) |
| UL Insulation class | class 105 |
| Duty Cycle | 100 % |
| Wire material | Copper |
| Efficiency | 77 % |
General
| Short circuit proof | not short-circuit proof |
| Switching group | IIii0 |
| Cooling type | AN |
Environment
| Ambient temperature | -20 °C to 40 °C / -4 °F to 104 °F |
| Max. installation height | 2,000 m / 6,562 ft |
Protection and Safety
| Protection type | IP 00 |
| Protection class (prepared) | II |
| Overvoltage category | III |
| Degree of contamination | 1 |
Electrical Connections
| Input terminal | Stranded wire |
| Output terminal | Wire connection |
Size and Weight
| Width | 62 mm / 2.44 in |
| Height | 31 mm / 1.22 in |
| Depth | 62 mm / 2.44 in |
| Weight | 0.35 kg / 0.772 lbs |
| Low Voltage Directive | EN 61558-2-6 |
| Approval cURus - Recognized | UL 5085-1/-2; CSA 22.2 |
Conrad Electronic SE
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