Emerson SolaHD SPD200K Series, Руководство пользователя

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SPD200K/300K
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SPD DAMAGE AND POWER SYSTEM OVERVOLTAGE
• Ungrounded power systems are inherently unstable and can produce excessively high line-to-ground voltages
during certain fault conditions. During these fault conditions any electrical equipment, including an SPD, may be
subjected to voltages which exceed their designed ratings. This information is being provided to the user so that
an informed decision can be made before installing any electrical equipment on an ungrounded power system.
• Resistance-grounded power systems must be maintained in a over-damped state to limit voltage overshoot and
duration during operation.
• Verification and adjustment of correct power system damping should be done following power system
modifications and periodically, as part normal system maintenance.
Failure to follow these instructions can result in injury or equipment damage.
General
The SolaHD SPD200K/300K has SPD elements connected from phase to ground. It is critical that there be a
robust and effective connection to the building grounding structure. The grounding connection must
utilize an equipment grounding conductor run with the phase and neutral (if present) connection of the
power system.
For proper over-voltage suppression by this SPD, use a single-point ground system where the service entrance
grounding electrode system is connected to, and bonded to, all other available electrodes, building steel,
metal water pipes, driven rods, etc. (for reference, see IEEE 142-2007). The ground impedance measurement
of the electrical system should be as low as possible, and in compliance with all applicable codes.
Solidly Grounded Power Systems
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Do not connect devices rated for use on solidly-grounded power systems to resistance-grounded (for example,
High Resistance Ground) or ungrounded power systems.
• Verify that the service entrance equipment is bonded to ground in accordance with all applicable codes.
• Verify that the neutral terminal of the power system transformer feeding the device is bonded to system ground in
accordance with all applicable codes.
Failure to follow these instructions will result in death or serious injury.
SPDs rated for use on solidly-grounded power systems must not be connected to resistance-grounded or
ungrounded power systems. Such a connection can result in damage to the SPD.
Always verify the power system grounding configuration prior to application of power to the device. Confirm
that all ground bonds are installed at both the service entrance equipment and power system transformer
prior to application of power.
CAUTION