Jands HP6, Technical Manual

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Equipment Description 1-2
Revision 2 - 26 April, 2000 HP SERIES DIMMER TECHNICAL MANUAL
DELTA SUPPLY OPERATION (ILLEGAL IN MOST COUNTRIES!)
The available venue mains supply in some countries (eg. the Philippines) is in the form of
three phases (220 volts between phases) with no neutral connection. The dimmer may be
configured for operation from 220V delta supplies.
The bridge between the three neutral terminal poles (N1, N2, N3) must be removed
before the three incoming active lines are connected.
•
The first incoming active is connected to terminals A1 and N3.
•
The second incoming active is connected to terminals A2 and N1.
•
The third incoming active is connected to terminals A3 and N2.
Note that this connection is ILLEGAL in Australia, Europe and the U.K..
Note that this connection renders the output sockets' neutral pins LIVE.
Note that a dimmer wired in this fashion will be subjected to CONTINUOUS
OVERVOLTAGE if connected to the 415V wye or star three-phase supply of most
countries.
The three active lines must each be protected at not more than 50 amps [63 amps: HP6-
C]. The dimmers' breakers are not rated to clear faults if the supply is protected at
currents of over 50 amps [63 amps: HP6-C]. The earth conductor must be similarly
rated.
The neutral-earth voltage detector will sense whether the "centre" (average) voltage of
the three phases deviates more than 15 volts from earth.
Once again -
DELTA CONNECTION IS ILLEGAL AND DANGEROUS IN MOST COUNTRIES!
1.2 Phase failure
If one power phase should fail, the dimmer will turn off the outputs associated with that
phase. This function can be disabled by the operator. See section 4.1.4.5.
1.3 Circuit breakers
The circuit breakers protect the HP dimmers' output devices and the user’s output wiring
against overloads and short circuits. The breakers have a "type 32" delay characteristic,
which is similar to standard switchboard breakers.
The delay characteristics of the circuit breaker are a delicate balance between high speed
(required for adequate semiconductor protection) and surge tolerance (to pass the inrush
current demanded by large incandescent lamps).
Each of the twelve output circuits is protected by a 11.5 amp [25 amp: HP6-C] fast-
acting magnetic circuit breaker. These breakers are designed to pass the rated current,
but will disconnect the output circuit for any overload condition (the larger the overload,
the quicker the disconnection).
NOTE: The dimmer outlet sockets are rated at 10 amps [20 amps: HP6-C]. Avoid
loading the dimmer outputs beyond the socket capacity.
The breakers protect the dimmer’s output devices from short-circuit loads and faulty
wiring looms, and save on expensive dimmer repairs. A tripped circuit breaker indicates a
load fault that requires immediate attention.