3
1200-185
APEX Series Installation
The APEX Series surge suppressor models are designed specifically to operate on the following
configurations:
Configurations
120V 1Ø
240V 3Ø Delta
120/240 Split 1Ø
220/380 3Ø Wye
120/208 3Ø Wye
230/400 3Ø Wye
240V 1Ø
240/415 3Ø Wye
Suppression is accomplished in parallel between phase conductors and/or between phase and the
neutral conductors, depending upon the voltage configuration. Once activated, the suppressor remains
operative until excess transient energy is dissipated and instantaneous peak line voltage falls below the
approximate 120% overvoltage threshold. At that time the suppressor automatically deactivates, resets
to a “ready” state, and awaits further transient activity.
Please take a moment to read and understand the installation instructions included with this product. If
any questions should arise concerning the proper installation of this product, please contact us.
Mechanical Installation
Step 1:
Select a location along the electrical distribution system as physically close to critical equipment loads
as practical to install the surge suppressor. The suppressor can be installed at distribution panels, at
equipment AC power inputs, or at the secondary windings of isolation transformers. The suppressor must
be positioned within four (4) feet (122 cm) of the AC power source. It is recommended that the suppressor
be installed within two (2) feet (61 cm) of the AC power source, if possible.
CAUTION: Increasing electrical impedance values to the inputs of any transient suppressor, regardless
of manufacturer, can increase the device’s voltage limiting levels. Suppressors should be installed as
physically close to the protected electrical distribution panel or critical load as possible using the largest
size wiring/conductors as practical.
Step 2:
Verify that the maximum current rating of the electrical service to be protected does not exceed specified
amperage rating of the suppressor model to be installed.
Table One: Application Rating
APEX II
225 Amps and below
APEX III
400 Amps and below
APEX IV
1000 Amps and below
