Scr power controllers are designed for an accurate and cost effective way to modulate electric heat.
Electric duct heater scr control.
Since the scr is solid state it.
These controls proportionally turn on a percentage of each power line half cycle.
Capacity and stages are dependent on voltage phase and heater dimensions.
Fuses to protect each circuit in any heater drawing more than 48 amps.
Automatic reset thermal safety switch for primary over temperature protection.
Not only does this give maximum control of your heat process but it can extend heater life many times over other control methods.
Their applications vary from a partial or auxiliary nature to being the major or principal heat source in a building.
This gives smooth infinitely variable application of power to the heaters.
Manual reset thermal safety switch for secondary over temperature protection.
Upon restoration of power the step sequence resumes.
A transformer with any overcurrent protection required by ul or the nec to supply the internal control circuit of 120 volts per heater with a step controller for vernier control and 24 volts for all other heaters with scr control.
This duct heater features.
When interruption of power occurs all stages cycle off.
Indeeco s attention to detail and rigorous testing give worldwide customers premium products that they receive quickly and at a fair price.
Standalone coils supplied as duct heaters are certified in compliance with ul 1996.
Viconics r820 scr power controller has been designed for safe and reliable control of electric heat loads.
Phase angle fired zero voltage switched and on off control.
The scr control can deliver electrical power to heaters in several ways.
Useful for electric reheat and supplemental electric duct heaters.
Thermolec electric duct heaters are designed for use in all forced air commercial and industrial hvac systems.
An electronic step controller provides electronic sequencing control of an electric duct heater up to 12 steps.
Scr pictured solid state relays are used to provide continuous modulation.
Power and control terminal boards.
Our heaters and controls range from standard duct heaters to the most sophisticated custom designed comprehensive systems.
Scr power control in depth.
A silicon controlled rectifier scr is a solid state switching device which can provide fast infinitely variable proportional control of electric power.
