Refu sol PV Heater DCLV, Инструкция по эксплуатации и монтажу

Страница: 11 / 44

BA_AE_PV Heater_V02.6_EN
11
4 Structure and function
4.1 Equipment safety and personnel protection
The AE PV Heater device prodives the following safety functions:
•
Recognizing of Earth connection and insulation error PV-modules and screw heater.
•
Recognizing and protective circuit in case of wrong DC-polarity.
•
Recognizing and regulation in case of surge on the screw heater.
•
Redundant temperature monitoring and switching off in case of emergency.
•
Recognizing of errors or failures in PV-modules and screw heater.
•
Personal protection guaranteed by protective extra low voltage (PELV).
•
Internal temperature monitoring and switch off.
CAUTION
Damages to equipment because of defects caused possibly high back
current in parallel connection of modules.
⇒
Possible back current of modules to be checked by experts.
4.2 Protection from surge and lightning strike
PV-supply inputs for PV Heater DCLV are protected by the use of surge conductors against surge
from internally and externally. The electronic facilities and communication lines fulfill the requirements
for protection against external surges.
In case of an existing lightning protection system a lightning protection specialist has to evaluate, as
to how far the complete system must be connected with the PV Heater DCLV in the lightning
protection.
4.3 Installation suggestions for the complete system
While planning, installation and after the following first commissioning of the complete PV- System the
following must be considered:
•
The local standards and laws concerning grounding, construction, cabeling and conncetion.
•
Installation suggestions of the PV-module manufacturer
•
Standards presently valid at the location, specially the standards:
o
IEC 60364 (Erection of low voltage systems)
o
IEC 61643 (Surge arrester for low voltage systems)
o
IEC 821749 / EN 62446 (Minimum requirements for PV-systems)
o
EN 61000-4 (EMC)