The BO-A AC/DC is a two-pole voltage detector for overhead lines of e.g. trams and electric buses. It is used to ensure the absence of voltage during maintenance work. The voltage detector BO-A AC/DC is suitable for use in DC and AC voltage networks. When the BO-A AC/DC is connected to a live line, an optical and acoustic signal is activated. A DC or AC voltage network is detected and indicated automatically. The BO-A AC/DC is designed and tested according to the standards IEC 61243-1,-2 and DIN VDE 0681-6. It can therefore be used worldwide.
| Indication "Ready" | 65 s ±15 s |
| Indication | According to group I of IEC 61243-1 |
| Nominal voltage/Nominal frequency | Vn = 100 V – 300 V Vn = 300 V – 900 V Vn = 1000 V – 3000 V |
| Transportation length | <1,100 mm |
| Minimum length insulating element | >520 mm |
| Power supply | Lithium cells |
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