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APsystems Microinverter User Manual
ALTENERGY POWER SYSTEM Inc.
emea.APsystems.com
APsystems
Karspeldreef 8, 1101 CJ, Amsterdam, The Netherlands
EMAIL: support.emea@apsystems.com
APsystems
22 Avenue Lionel Terray 69330 Jonage France
EMAIL:support.emea@apsystems.com
© All Rights Reserved
APsystems QS2 Microinverter
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(For EMEA)
2025/01/14 Rev1.0
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Summary of Contents for APsystems Microinverter QS2
- Page 1 APsystems Microinverter User Manual APsystems QS2 Microinverter (For EMEA) ALTENERGY POWER SYSTEM Inc. emea.APsystems.com APsystems Karspeldreef 8, 1101 CJ, Amsterdam, The Netherlands EMAIL: support.emea@apsystems.com Please scan this QR code to have access to our APPs and Products APsystems information 22 Avenue Lionel Terray 69330 Jonage France EMAIL:support.emea@apsystems.com...
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Page 2: Table Of Contents
4.3.5 Step 5 - Ground the system .......................10 4.3.6 Step 6 - Connect the APsystems Microinverter to AC bus cable ............11 4.3.7 Step 7 - Install a Bus Cable End Cap at the end of AC bus cable ............11 4.3.8 Step 8 - AC Extension Cable ...................... -
Page 3: Important Safety Instructions
Do NOT disconnect the PV module from the APsystems Microinverter without first disconnecting the AC power. Be aware that the body of the APsystems Microinverter is the heat sink and can reach a temperature of 80°C. To reduce risk of burns, do not touch the body of the Microinverter. -
Page 4: Radio Interference Statement
1.2 Radio Interference Statement EMC Compliance：The APsystems Microinverter can radiate radio frequency energy. If not installed and used in accordance with the instructions, it may cause harmful interference to radio communication. APsystems Microinverter complies with EMC regulations, which are designed to provide reasonable protection against harmful interference in a residential installation. -
Page 5: Apsystems Microinverter System Introduction
(from 600Vdc up to 1000Vdc) at the end of the PV string. This extreme high DC voltage brings a risk of electrical shocks or electrical arcs which could cause fire in a worst case scenario. When using an APsystems Microinverter, each 1 or 2 PV modules are connected to DC input. - Page 6 Simple to install APsystems Microinvertes are compatible with most of 60 and 72 cell PV modules or 120 and 144 half-cut cells PV modules. (In order to confirm compatibility of PV module with APsystems Microinverter, feel free to check our online “E-decider”...
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Page 7: Apsystems Microinverter Qs2 Introduction
• A 24/7 energy access through apps or web-based portal facilitate remote diagnosis and maintenance Smart Design • Single unit connects to 4 modules • 4 input channels with independent MPPT and monitoring function • Encrypted wireless communication APsystems Microinverter QS2 user manual... -
Page 8: Apsystems Microinverter System Installation
4.APsystems Microinverter System Installation A PV system using APsystems Microinverters is simple to install. Each Microinverter easily mounts on the PV racking, directly beneath the PV module(s). Low voltage DC wires connect from the PV module directly to the Microinverter, eliminating the risk of high DC voltage. -
Page 9: Installation Procedures
4.3.3 Step 3 - Attach the APsystems Microinverters to the Racking 1. Mark the location of the Microinverter on the rack, with respect to the PV module junction box or any other obstructions. -
Page 10: Step 4 - Connect Apsystems Microinverters To The Pv Modules
LED indicator of the Microinverter facing outwards to facilitate monitoring of indicator status and ensure optimal communication quality. 4.3.4 Step 4 - Connect APsystems Microinverters to the PV Modules NOTICE: Each channel connects 1 PV modules in series (For PV modules with Voc<60V). -
Page 11: Step 5 - Ground The System
3. Please ensure each DC cable's length within 3 meters. 4.3.5 Step 5 - Ground the system There are three ways to connect grounds on the APsystems QS2: ① Y3 AC Bus cable has an embedded PE wire to ground the inverters in the AC circuit box ②... -
Page 12: Step 6 - Connect The Apsystems Microinverter To Ac Bus Cable
4.3.6 Step 6 - Connect the APsystems Microinverter to AC bus cable Insert the Microinverter AC connector into the bus cable connector. Make sure to hear the “click” as a proof of robust connection. Click Best Practice: Use the Bus Cable Unlock Tool... -
Page 13: Step 8 - Ac Extension Cable
When AC extension cable is needed, users could connect the AC bus cable and AC extension cable in a junction box or use a pair of male/female AC connectors that APsystems provides as optional accessory. 4.3.9 Step 9 - Connect APsystems Microinverters to Grid NOTICE: 1. -
Page 14: Step 10 - Complete The Apsystems Installation Map
Alternatively, LED sequences could be an indicator of Microinverters status (see section 6.1) NOTICE: Once the ECU has been commissioned properly, the APsystems Microinverters will start to send performance data to the ECU. The time required for all of the Microinverters in the system to report to the ECU will vary depending on the number of Microinverters in the system. -
Page 15: Troubleshooting
Please contact your local APsystems Technical Support. 6.2 ECU_APP APsystems ECU_APP (available in the EMA Manager APP) is the recommended tool to do on-site troubleshooting. When connecting the ECU_APP to the ECU hot spot (please check ECU User Manual for more detailed information), installer can check every Microinverter status (production, communication) but also ZigBee signal strength, grid profile and other insightful data helping the troubleshooting. -
Page 16: Apsystems Technical Support
6.5 APsystems Technical Support APsystems local Technical Support team is available to support professional installers to get familiar with our products and to troubleshoot installations when needed. WARNING: Do not attempt to repair APsystems Microinverters. Please contact your local APsystems Technical Support. -
Page 17: Replace A Microinverter
7.Replace a Microinverter Follow the procedure to replace a failed APsystems Microinverter A. Disconnect the APsystems Microinverter from the PV Module, in the order shown below: 1. Disconnect the AC by turning off the branch circuit breaker. 2. Disconnect the inverter AC connector from the AC Bus. -
Page 18: Technical Data
1. Be sure to verify that the voltage and current specifications of your PV module are compatible with the range allowed on APsystems Microinverter. Please check the Microinverter datasheet. 2. DC operating voltage range of the PV module must be within allowable input voltage range of the APsystems Microinverter. -
Page 19: Qs2 Microinverter Datasheet
(4) Recommend no more than 80 inverters register to one ECU for stable communication. web : emea.APsystems.com (5) To be eligible for the warranty, APsystems microinverters need to be monitored via the EMA portal. Please refer to our warranty T&Cs available on emea.APsystems.com. -
Page 20: Qs2 Accessory
9. QS2 Accessory 9.1 Dimensions APsystems Microinverter QS2 user manual... -
Page 21: Wiring Diagram
9.2 Wiring Diagram APsystems Microinverter QS2 user manual... -
Page 22: Apsystems Microinverter Installation Map
10. APsystems Microinverter Installation Map The APsystems Installation Map is a diagram of the physical location of each microinverter in your PV installation. Each APsystems microinverter has two serial number labels. Peel the one label and affix it to the respective location on the APsystems installation map.
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