Installing the PCS Onsite
Safety Considerations
The following safety information is intended to reduce the risk of accidents:
Keep the floor around the PCS clean to prevent metallic dust, iron, or other metal fillings
from being drawn inside the device, consequently causing short circuits.
Closed area installations:
The floor and surrounding area around the PCS must use non-flammable material.
A portable powder fire extinguisher must be installed within easy reach of the PCS.
An automatic fire extinguishing system should be installed and enabled for the site.
Access to the installation site should be restricted to qualified service personnel.
Surge Arrester Safety
The function of the lightning and surge protection system is to protect the devices, functional
isolations, and over voltage-sensitive consumer equipment of the PCS. The PCS is equipped with a
Class II SPD to cover the system when not placed in a direct lightning strike area.
Due to the wide surge energy, voltage, and frequency range of overvoltage in lightning strike areas, it
is recommended:
1. Where the system is equipped with an external lightning protection system(LPS) or protection
against effects of direct lightning is otherwise specified, Class I SPDs shall be used.
2. Where the system is not equipped with an external lightning protection system(LPS) and
where the occurrence of a direct lightning strike to the overhead lines between the last pole and
the entrance of the installation is to be taken into consideration, Class I SPDs at or near the
origin of the electrical installation shall be used.
3. Class II SPDs shall be installed as close as possible to the origin of the installation in the
system, for example in the upstream distribution board for PCS.
Battery Ground Fault Concerns
The following are concerns surrounding the potential risks of DC ground faults and the possible causes.
WARNING!
To prevent possible escalation into serious or catastrophic ground faults, make sure to equip
the corresponding Ground Fault Detection (GFD) equipment and follow strict maintenance
guidelines.
The primary concerns with any Battery Ground Fault include three principle areas:
1.
Fire due to ground fault.
2.
Risk to personnel due to ground or battery fault.
3.
Risk to system reliability due to ground fault.
To prevent possible ground fault risks, equip the corresponding GFD equipment. The battery warranty
may be null and void if the GFD equipment is not equipped.
Please be noted there is DC Insulation Detection circuits equipped inside this PCS, but if PCS is
installed in a grounded system, a Residual Current Monitoring (RCM) Device is necessary to do GFD
function. A type B (universal current sensitive) RCM device is recommended. It can be installed at
either DC or AC side, it is recommended to install RCM on the AC side
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