www.theatrelight.co.nz
PO Box 13-
159, Onehunga, Auckland, New Zealand
6 Rowe St, Onehunga, Auckland, New Zealand
Tel 64-9-622 1187, Fax 64-9-
The standard 19 inch rackmount case contains either 6 or 12 Solid State Relays for
remote switching of loads by DMX control. Solid state relays generate very little
electromagnetic interference compared to hard switched Relay contacts.
Features:
• Solid State Relays use dual SCRs (not Triacs)
• SCRs are continuous pulse train driven for no minimum load limitation
requirement
• SCRs switch On at voltage zero cross to eliminate current surges at turn-on of
capacitive loads (as caused by mechanical relay contacts)
• SCRs switch Off at current zero cross to eliminate voltage spikes at turn-off of
inductive loads (as caused by mechanical relay contacts)
• Firing angle in each half-cycle (and hence energy) always maintained equal,
and only positive and negative pairs of half-cycle energy are fed to the load
This results in a very low DC component to protect magnetic transformers
from core saturation and consequent fire hazard
• SCRs are voltage surge and spike protected
• Overload limited by thermistor (channels are switched off on long-term over-
current to limit damage due to over-heating)
• Minimum volts loss to load - only 1.5 volts
• On or Off states may be controlled by DMX remotely, or locally from the
internally lit front panel pushbuttons.
• When DMX controlled, channels turn at 60% and turn off at 40%. This
hysteresis provides flicker-free On/Off switching
• Programmable security delays to prevent switch on off of critical loads
• Manually controlled channels On/Off state always restored on power up
• DMX controlled channels always power up Off
• Keyboard disable feature to prevent unauthorised operation
• Universal power supply: 90-240vac, 50-60 hertz.
Models:
SwitchPack 1210: 12 channels of 13 amp MCBs. Available with Aust/NZ socket back,
Socapex back, terminal back, or to order
SwitchPack 1220: 12 channels of 20 amp MCBs. Available with Socapex back,
terminal back, or to order
SwitchPack 630: 6 channels of 32 amp MCBs. Available with terminal back, or to
order
