Installation Instructions; Receiving; Mounting, Ventilation And Important Factors To Consider - Emerson SolaHD MCR Hardwired Serie Mode D'emploi

4.0 Installation Instructions

4.1 Receiving

Upon receipt, immediately inspect the unit for obvious signs of shipping damage and/or mishandling. If
damaged, photograph the unit, inform the carrier, and contact your SolaHD representative.

4.2 Mounting, Ventilation and Important Factors to Consider

These units are for use in an indoor humidity and temperature controlled environment. Mount the unit in
either a horizontal or vertical position. The unit should be located where contact with the transformer's hot
surface is unlikely. If mounted in a vertical position (e.g., on a wall), steel mounting hardware must be selected
in accordance with Table 1. The wiring compartment should also be facing up.
When utilizing MCR units, please consider these important factors:
Motor or Inductive Loads: The MCR and CVS products have a fast response time and a built-in overload
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protection which causes the output voltage to collapse during an overload condition. Due to this
protection function, the load must not draw more than the unit's rated capacity, even momentarily. For
this reason, care needs to be considered with highly inductive loads (e.g., motors, pumps, contactors,
solenoids, air conditioners, etc.).
You may size the conditioner based on the peak current rating, but you will need to meet the Minimum
Load requirement. This is the reason why SolaHD highly recommends only using these CVS and
MCR products for resistive or electronic loads.
Minimum Load: Minimum loading of no less than 40% of the nominal rating because output voltage will
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rise by 1% as the load is decreased. Units with less than 40% load may run hotter than those at close to full
load. This may result in overheating in the long run.
Frequency: The output voltage varies linearly with changes in Input Frequency. A 1% change in input
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frequency will yield a 1.5% change in output voltage. 60Hz models cannot be used with 50Hz application
and vice versa. This is also the reason why we don't recommend these units with generator source that has
varying input frequency.
table 1: Mounting Hardware
MCR Rated VA
120 VA
250 VA
500–1000 VA
1500–10000 VA
15000 VA
All regulators generate a considerable amount of heat and depend on natural convection for adequate
cooling. It is important that ventilation openings not be obstructed. Mounting in a confined or poorly
ventilated space should be avoided, unless special provisions have been made for ventilation. For proper
ventilation, allow a minimum of 12 inches of clearance above the unit and minimum of 6 inches of clearance
on each side.
MCR Hardwired Series – 50 Hz & 60 Hz
Steel Mounting Screws (Minimum Diameter)
#10 machine screws
1/4 in. bolts
5/16 in. bolts
3/8 in. bolts
1/2 in. bolts
A272-282 Rev. 4 02/2020
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