WARNING
1. Please make sure to turn off the power before starting the installation.
2. Installation must be performed by a qualified electrician.
3. Prior to the application, please read this section carefully to ensure correct and safe application.
Please keep the user manual properly.
Surge protection devices (SPDs) for PV installation
• Lightning will cause a damage either from a direct strike or from surges due to a nearby strike.
• Induced surges are the most likely cause of lightning damage in majority or installations,
especially in rural areas where electricity is usually provided by long overhead lines.
Surge may be included on both the PV array conduction and the AC cables leading to the building.
• Specialists in lightning protection should be consulted during the end use application.
Using appropriate external lightning protection, the effect of a direct lightning strike into a building can be
mitigated in a controlled way, and the lightning current can be discharged into the ground.
• Installation of SPDs to protect the inverter against mechanical damage and excessive stress include a surge
arrester in case of a building with external lightning protection system (LPS) when separation distance is
kept.
• To protect the DC system, surge suppression device (SPD type2) should be fitted at the inverter end of the
DC cabling and at the array located between the inverter and the PV generator, if the voltage protection
level (VP) of the surge arresters is greater than 1100V, an additional SPD type 3 required for surge
protection for electrical devices.
• To protect the AC system, surge suppression devices (SPD type2) should be fitted at the main incoming
point of AC supply (at the consumer's cutout),located between the inverter and the meter/distribution
system; SPD (test impulse D1) for signal in according l to EN 61632-1.
• All DC cables should be installed to provide as short a run as possible, and positive and negative cables of
the string or main DC supply should be bundled together.
• Avoiding the creation of loops in the system.
• Spark gap devices are not suitable to be used in DC circuits once conducting, they won't stop conducting
until the voltage across their terminals is typically more than 30 volts.
• Anti-Islanding Effect Islanding effect is a special phenomenon that grid-connected PV system still supply
power to the nearby grid when the voltage loss is happened in the power system. It is dangerous for
maintenance personnel and the public. X1-Hybrid series inverter provide Active Frequency Drift(AFD) to
prevent islanding effect.
PE Connection and Leakage Current
• The end-use application shall monitor the protective conductor by residual current operated protective
device (RCD) with rated fault current Ifn≤240mA which automatically disconnects the device in case of a
fault. The device is intended to connect to a PV generator with a capacitance limit of approx 700nf.
• Incorrect grounding can cause physical injury, death or equipment malfunction and increase
electromagnetic.
• Make sure that grounding conductor is adequately sized as required by safety regulations.
• Do not connect the ground terminals of the unit in series in case of a multiple installation.
This product can cause current with a d.c component, Where a residual current operated protective (RCD)
or monitoring (RCM) device is used for protection in case of direct or indirect contact, only an RCD or RCM
of type B is allowed on the supply side of this product. For United Kingdom
• The installation that connects the equipment to the supply terminals shall comply with the requirements of
BS 7671.
• Electrical installation of PV system shall comply with requirements of BS 7671 and IEC 60364-7-712.
• No protection settings can be altered.
• User shall ensur e that equipment is so installed, designed and operated to maintain at all times
compliance with the requirements of ESQCR22(1)(a). For Australia and New Zealand
• Electrical installation and maintenance shall be conducted by licensed electrician and shall comply with
Australia National Wiring Rules. Battery Safety Instructions BD series inverter should be worked with high
voltage battery, for the specific parameters such as battery type, nominal voltage and nominal capacity
etc., please refer to section 4.3. As accumulator batteries may contain potential electric shock and short-
circuit current danger, to avoid accidents that might be thus resulted, the following warnings should be
observed during battery replacement:
1: Do not wear watches, rings or similar metallic items.
2: Use insulated tools.
3: Put on rubber shoes and gloves.
4: Do not place metallic tools and similar metallic parts on the batteries.
5: Switch o ffload connected to the batteries before dismantling battery connection terminals.
6: Only personal with proper expertise can carry out the maintenance of accumulator batteries.
Summary of Contents for VT-66036103
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