Electronic ballasts for HID

FAQ: Frequently asked questions

  1. Does the PCI have a thermal cut-out?
    • Yes, the PCI has a thermal cut-out. It switches-off at about 10 °C above tc temperature.

  2. PCI B011 have a metal base plate. Is it allowed to connect the earth via this base plate or do I have to use the earth terminal?
    • Yes, it is allowed to connect the earth via the base plate. However, it is not allowed to wire the earth through the ballast.

  3. Is it allowed to use a PCI upside down (base plate on top)?
    • Yes, if the temperature values are within the specification.

  4. What happens if I use a 35 W HI lamp on a PCI 0070?
    • The 35 W lamp will be operated with 70 W. The lamp will reach its end of life very soon.

  5. I have a luminaire where the PCI 0150 B011 gets a bit too hot. Can I produce my own pcb version when I take off the housing cover by myself?
    • No, you’ll lose the warranty if you open the ballast! Also the pressure on the thermal transfer compound may have changed and the cooling is not ensured anymore.

  6. With a PCI 35/70 C011 PRO a 70W HI lamp light shines greenish. Is the ballast defect?
    • No, probably the phase is connected to the wrong multiwatt terminal and the 70 W lamp is operated with 35 W.

  7. Why isn’t it possible to operate a 150 W sodium lamp with a PCI 0150 B021? The ignition voltage of the PCI is fine.
    • The PCI will strike the lamp but it will probably extinguish after about 2.5 minutes as the sodium ramp up is too slow for the PCI and the short circuit detection becomes active.

  8. My customer wants to install some PCI 2/70 B021 but he’d like to use the ballasts with just one lamp in the beginning. If he needs more light he’ll add a lamp to the second circuit. Is this fine?
    • Yes, the circuits of the Twin ballasts operate individually. If you leave one circuit open, it will stop the ignition attempts after about 26 minutes.

  9. In the data sheet of the PCI 0035 B021 a maximum lamp wire length of 3 m/240 pF is declared. I have a cable with a low capacitance with 40 pF/m. Can I place the lamp 6 m away from the ballast?
    • Yes, the cable capacitance is crucial for the PCI. The declared max. length refers to a “standard cable” with 80 pF/m.

  10. Can I use some PCI FOX in a mixed DALI installation together with some TE converter?
    • Yes, but you have to be aware of the different behaviour during the commissioning procedure.

  11. Is earthing required for the PCI devices?
    • The devices operate perfectly well without an earth connection. In critical luminaires an earth connection can improve the EMC behaviour however.

  12. Why can the PCS not be dimmed immediately after starting?
    • Dimming is not permitted in the first few minutes because lamp manufacturers want the lamp to stabilise first.

  13. Why is the minimum dimming level for PCIS outdoor DIM limited to 40 %?
    • High-pressure sodium vapour lamps may typically be reduced to 50 % lamp wattage. This corresponds approximately to a 40 % DALI light value. For metal halide lamps the minimum dimming value is mostly above this.

  14. Is through-wiring possible?
    • Through-wiring is possible for all surface-mounted devices. Connection of the new PCI C021 devices is particularly easy. There are three channels available (power connection, extension of the power line and lamp line).

  15. Can a PCI 35/70 C011 be used to reduce a 70 W light source to 35 W?
    • No, the lamp will be operated outside its specification and exhibit strong colour deviation (green tinge).

  16. The lamp goes out and it takes several minutes to restart. Is the device faulty?
    • Hot HID lamps are very difficult to restart. The ignition time for a hot lamp may be as much as 15 minutes.

  17. What are the special aspects of DALI addressing with PCI?
    • The lamp remains off during the initialisation/addressing phase. Because of the starting properties of a high-pressure lamp visualisation is problematic.