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The COMMBOX

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Chap 3 - Quiz

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1. What is the main goal of a correct installation of the COMMBOX?
Reduce battery capacity Increase system voltage Generate more solar energy Ensure stable communication and safe operation
2. What environment is recommended for the installation of the COMMBOX?
A clean, dry and well-ventilated place An area exposed to rain A strongly vibratory room An area subject to chemicals
3. What tool can check the quality of RJ45 communication cables?
Multimeter Clamp meter RJ45 tester Fixing wrench
4. What tool is used to measure voltage and check polarity?
Electric drill Multimeter Fastening level Phillips screwdriver
5. When connecting DCIN, how should the polarities be connected?
DC+ to the positive and DC− to the negative DC+ to the negative and DC− to the positive Polarities are of no importance Depending on the type of battery used
6. What check is required before the CAN connection with the UPS?
The color of cable The compatibility of the communication protocol The energy capacity of batteries The battery charge level
7. What error can result from a polarity reversal?
Better stability of the system An increase in CAN communication Faster charging of batteries Irreversible damage to electronic components
8. Which protocol is used primarily for parallel communication between multiple batteries?
Ethernet USB RS485 Bluetooth
9. What type of cable is recommended for CAN and RS485 communications?
Shielded Cat6E cable Coaxial cable Standard telephone cable HDMI cable
10. When is the system considered validated after testing?
When only CAN communication works When the inverter is powered When all batteries are recognized and no alarm is active When the LEDs are on