How to Place a Voltage Stabilizer?

When receiving the equipment, It is important to check that the voltage stabilizer has not sustained damage during transit. The following procedure should be followed immediately upon receipt of the unit.

  1. Crate/Packaging – Check for transit damage. Make notes, drawings or photos of any damage, starting with the outside of the un-opened crate first.
  2. Cabinet/Casework – Check for visible signs of damage to exterior panels, doors and fittings. If cracks, scratches or dents are visible, there is a chance of internal damage. Particular attention should be paid to the terminal panel.
  3. Internal Components – Unlock the door using the key provided. Inspect for damage to the transformers, PCBs and other components. All mountings should be tight and there should be no sign of movement of the transformers or other parts.
  4. Internal Wiring – All wiring connections should be checked to ensure that transit vibration has not loosened screw terminals.
Single phase automatic voltage stabilizer

It is also important to consider placement after checking that there is no problem with the voltage stabilizer.

  • Positioning of Indoor Units – The voltage stabilizer for home use should be sited on a firm, dry and level surface. A position allowing access on all four sides to permit preventative maintenance would be advantageous. As there are cooling fans mounted in the cabinets it is important that there should be adequate space around the unit. As a guide, a free space of at least 300mm should be left in all directions around the voltage stabilizer. Keep it away form sources of heat and excessive dust and dirt. It should not be positioned where it will be in direct sunlight.
  •  Positioning of Outdoor units – The voltage stabilizer for outdoor should be sited on a firm, level surface. A concrete base is recommended. A position allowing access on all four sides to permit preventative maintenance would be advantageous. As there are cooling fans mounted in the cabinets it is important that there should be adequate space around the unit. As a guide, a free space of at least 300mm should be left in all directions around the voltage stabilizer. Ensure cable routing to/from the voltage stabilizer will not subject the cable to damage. Protect the stabilizer from possible damage from road vehicles. Do not site it close to exhaust outlets, rainwater outflows, or areas frequented by animals. Ventilation The unit should be positioned such that a free flow of air is available. It is especially important to ensure that cooling fan inlets and outlets are free from obstruction. A free space of at least 300mm should be left in all directions around the stabilizer. Open the front door of the voltage stabilizer and identify the power PCBs, ST221 or ST165. These have rows of triacs on heat sinks and resistors on sub-PCBs. A ‘comb’-shaped item is used to support these heat sinks during transit. Remove them before use so as to maximize airflow.

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