Ac Power - Martin Cyclo Directional IP65 User Manual

A C p o w e r
DANGER! It is the installer's responsibility to ensure that all power
cable and equipment is adequately dimensioned and of appropriate
type for the installation, and that all local safety regulations and legal
requirements are observed when installing and connecting the Cyclo
IP65 Directional.
Current and power data are given in the Specifications section on page 43.
Inrush currents and e lect roni c circuit-breakers
When fluorescent tubes with ECG (electronic control gear) systems are
switched on at the AC wave peak, a larger current surge occurs than with
conventional ballasts. If a large number of luminaires are switched on
simultaneously, this inrush current can trip electronic circuit breakers. To
avoid this in large installations, either switch on luminaires at intervals or
limit the number of luminaires per 16 A electronic circuit breaker to
approximately ten luminaires.
RCDs and common neutral conductors
Many fixed installations use common neutral conductors in branch circuit
distribution boxes. To avoid unintentional tripping of the RCD (residual
current device, or ground fault/earth leakage circuit breaker), ensure that
each luminaire's neutral conductor is connected to AC power via the same
RCD as the live conductor.
Le akage to ground and RCDs
Each ECG "leaks" a total current of maximum 0.5 mA to ground (earth).
Luminaires must be correctly connected to ground so that this "leakage"
current can be absorbed.
Allow for the "leakage" current from ECGs when connecting luminaires to a
circuit that has an RCD for ground fault protection, otherwise the RCD may
trip unintentionally. Bear in mind that RCDs are rated at their maximum trip
current, and that some RCDs rated 30 mA may trip when leakage to ground
is as low as 20 mA.
RCDs can also be tripped by the inrush current when tubes are switched on.
To avoid unintentional tripping of RCDs:
1. Distribute power using 3 phases and install 3-phase RCDs.
2. If it is both safe and legal, use RCDs with a trip current rating higher than
30 mA. When considering this option, the installer must ensure that all
local building and electrical regulations are respected. Maximum legally
18 Cyclo IP65 Directional user manual