Installation - Indeeco 110-Z3 Operating Manual

INSTALLATION

WARNING: FIRE HAZARD!! Even the best electronic components CAN FAIL
SHORTED, KEEPING FULL POWER ON! Provide a completely SEPARATE (redundant) OVER
TEMPERATURE SHUTDOWN MEANS to switch power off if safe temperature is exceeded. Solid state
devices are never "off" unless you physically disconnect the incoming electrical power to the SCR.
WARNING: HIGH VOLTAGE!! This control must be installed in a GROUNDED
enclosure. Provide a safety interlock on door to remove power before gaining access to device.
The ground/earth connection can be made to the 110-Z3 chassis mounting point on heat sink / side panel.
This controller must be installed by a qualified electrician in accordance with any and all
local and national electric codes including NEC and any other applicable codes.
First things first, do you have the proper controller for your application? Check the INDEECO 110-Z3serial tag and
verify the correct voltage/ ampere ratings and input control signal for your application.
After verifying you have the proper controller, the next most important item is adequate cooling/ ventilation. All
INDEECO power controllers are rated to deliver full power to their respective load(s) at an ambient temperature not
to exceed 50ºC. Use this formula to calculate the minimum size enclosure required.
Number of SCR's X 1.2 VOLTS X MAXIMUM HEATER CURRENT = TOTAL WATTS
Example: 2 x 1.2 x 60 amps = 144 watts that the power controller has to dissipate
Heat is the worst enemy to any electrical device, including power controllers. Orient heat sink fins and chassis
channel in a vertical position, providing adequate air flow above and below unit. The cooler the unit operates, the
longer it will provide seamless, reliable service. Fan cooled units should have fans on bottom facing up.
As a quick rule for spacing is take footprint measurement of SCR and use that as ideal spacing distance for SCR and
other components.
Example; if the SCR is 12" x 12", space other objects 6" above, 6" below & 6" side to side for best heat dissipation.
Plastic wire duct is an insulator and blocks air flow.
The dryer and cleaner, the better! Over time, a combination of moisture and contaminates will lead to failure due to
corrosion and insulation breakdown (arcing and sparking). If the controller absolutely must be installed in a harsh
and corrosive environment, it is recommended that an air conditioned NEMA 4X or similar type of environmentally
sealing enclosure be used during installation.
DISSIPATED
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