Voltage detectors
BO-A AC/DC
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.
According to DGUV regulation 3 (table 1c), the device should undergo a maintenance test every 6 years.
- One device for DC and AC networks
- Plug-in system – easy and quick to use
- Integrated self-test device – increased safety
- AC/DC-Residual Voltage Indicator
- DC ± Polarity Indicator
- Low weight – easy handling and transport
- Use even in precipitation
- Up to max. 4.7 m length – voltage testing from the ground
- Magnetic earthing contact
Technical specifications
| Dry conditions | --- |
|---|---|
| Dry and wet conditions | --- |
| Indication | „Standby“: green LED (after successful self-test) „Voltage present“: red LED and acoustic signal for DC with static polarity indication (blue/red) for AC without polarity indication „Voltage not present“: green LED, no acoustic signal AC/DC residual voltage indicator: yellow flashing LED for: AC residual voltage detection from 50 V RMS or DC residual voltage detection from ±75V DC ± Polarity indicator: Detecting DC voltage polarity: red or blue flashing LED |
| Indication "Ready" | 65 s ±15 s |
| Indication | According to group I of IEC 61243-1 |
| Nominal voltage/Nominal frequency | The following three standard versions are available: • Vn = 100 V – 300 V • Vn = 300 V – 900 V • Vn = 1000 V – 3000 V See imprint on name plate, tolerance ± 10 % 16.7 — 60 Hz |
| Properties of the insulating rod | Tested for leakage current of the insulating part with 1.2 x Ur for 1 min |
| Transportation length | <1,100 mm (including catch hook probe) |
| Minimum length insulating element | >520 mm |
| Power supply | Lithium cells, 6 years at approx. 10 ready cycles / day and 230 days / year |
| Temperature range | -25 to +65°C |
