Delta RPI Series Specification sheet

RPI-M15A/M20A
Operation and Installation Manual
Grid-tie Transformerless Solar Inverter
The power behind competitiveness
www.deltaww.com
English 1
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1. General Information
1.1. About this Manual
1.2. Product Description
1.3. Additional Information
2. Product Overview
2.1. Unpack the Inverter
2.2. Checking Unit and Accessories
2.3. Product Label
2.4. Exterior Objects
3. Installation
4. Wiring
4.1. Preparation before Wiring
4.2. AC Grid Connection: 3-Phase+PE or 3-Phase+N+PE
4.2.1. Required Protective Devices and Cable Cross-sections
4.3. DC Connection (from PV Array)
4.4. Communication Module Connections
4.4.1. RS-485 Connection
4.4.2. EPO Functions
4.4.3. Dry Contact Connection
5. Turn On PV Inverter
5.1. LCD Flow Chart
5.2. First startup
5.2.1. Home Page
5.2.2. Power Meter
5.2.3. Energy Log
5.2.4. Event Log
5.2.5. Operation Data
5.2.6. Inverter Information
5.2.7. Settings
5.2.7.1. Personal Settings
5.2.7.2. Coefficient Settings
5.2.7.3. Install Settings
5.2.7.4. Active/Reactive Power Control
5.2.7.4.1. Active Power Control – Power Limit
5.2.7.4.2. Active Power Control – Power vs. Frequency
5.2.7.4.3. Active Power Control – P(V)
5.2.7.4.4. Reacitve Power Control – Constant cosφ
5.2.7.4.5. Reacitve Power Control – cosφ (P)
5.2.7.4.6. Reacitve Power Control – Constant Reactive Power
5.2.7.4.7. Reacitve Power Control – Q(V)
5.2.7.5. FRT (Fault ride through)
6.Maintenance
6.1. Clean Fan
6.2. Replace Fan
6.3. Clean Air Outlets
7.Error message and Trouble Shooting
8.De-Commissioning
9.Technical Data
10.Assembly Note
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Contents
03

Safety Instructions
This manual uses the following instructions for conveying important safety related information.
CAUTION !
Machine and equipment damage may occur if this hazardous situation is not
avoided.
WARNING !
Death and serious injury may occur if this hazardous situation is not
avoided.
Repair work on the device should ONLY be carried out by the manufacturer.
No user serviceable parts inside.
In Australia, installation and maintenance work shall be conducted by qualified
electrician and shall comply with Australian Regulations.
DANGER !
To avoid risk of electrical shock, do not open the solar inverter. Death and
serious injury will occur if this hazardous situation is not avoided.
WARNING ! BURN HAZARD
The unit may reach high temperatures and the device surface can
become quite hot. Sufficient cooling time is necessary for optimal yield.
04

1.General Information
1.1. About this Manual
This manual is to provide the explanation and procedures for installing,
operating, maintaining, and troubleshooting the below solar inverters:
RPI-M15A/ RPI-M20A.
1.2. Product Description
This device is a 3-phase grid-tied solar inverter which does not support off-
grid functionality.
The operation of solar inverter is shown as the Figure 1-1.Inverters convert
the DC input power supplied from the PV Array into 3-phase AC output power
to Grid.
Figure 1-1 Solar system operation illustration
1.3. Additional Information
For more detailed or other related product information, please visit
http://www.deltaww.com
PV Array Electrical Grid
Solar Inverter
DC Distribution
box
3PH AC Distribution
box
Surge arrestor
Fuse
DC switch
Surge arrestor
AC breaker
3 phase, N, PE
05
General Information

Figure 2-1 Unpack the inverter
The unpacking procedure of RPI-M15A / M20A is shown as Figure 2-1.
2.Product Overview
2.1. Unpack the Inverter
2.2. Checking Unit and Accessories
Unforeseeable events causing damage or movement may occur during
shipment. Please check following items upon receiving your inverter.
• Check the damage on the packaging.
• Check if all the accessories are in the package, the standard accessories
are list as Table 2-1 & Figure 2-2.
• Check the model number and the serial number on the packaging is identical
with the model number and serial number on the unit itself.
If there is any visible damage to the inverter/accesories or any damage to
the packaging, please contact your inverter supplier.
06
Product Overview

Figure 2-2 Packing list
RPI-M15A/ RPI-M20A
Object Qty Description
1 PV Inverter 1 pcs
1 pcs
1 pcs
1 pcs
RPI series solar inverter
2 User Manual
The Instruction to provide the information of safety,
Installation, specification, etc.
3 AC Plug
Mounting Bracket
Connector for AC connection
Wall mounting bracket to mount the solar inverter
on the wall.
4
5
DC Plug 4 sets Connector for DC connection
Table 2-1 Packing list
Caution: If there is any visible damage to the inverter/accesories or any damage to
the packaging, please contact your inverter supplier.
①③
②⑤④
07
Product Overview

2.3. Product Label
Users can identify the model number and the specifications by the information
on the product label. The location for the label please see Figure 2-3.
Figure 2-3 Product label
08
Product Overview

2.4. Exterior Objects
The Inverter’s exterior objects are shown in Figure 2-4. The detailed input/
output interfaces illustration is shown in Figure 2-5. Different models have
different number of DC input strings.
Label
DC Switch
Communication Connetions
LCD/LED Display and Buttons
Air outlets
DC Connectors
Fan*1 or *2
AC Connectors
Figure 2-4 Inverter’s exterior objects
Figure 2-5 Input/output panel
Communication
-RS-485 *2
-EPO *1
-Dry Contact *1
DC1 DC2
Fan(s) : 2 pcs
AC Connector
230/400Vac, 3Ph
DC Switch
String1
String2
String3
String4
09
Product Overview

Figure 3-1 Mount Dimention
CAUTION !
The unit should not be installed in direct sunlight.
WARNING !
• Do not install the unit near or on flammable surfaces.
• Please mount the unit tightly on a solid/smooth surface.
• PV array that have an IEC 61730 Class A rating, or external insulation
transformer shall be installed at grid side.
3.Installation
This unit is designed to be wall-mounted. Please ensure the installation is
perpendicular to the floor and the AC plug at the bottom. Do not install the
device on a slanting wall.
To mount the inverter on the wall, please follow the procedure below:
1.Screw the mounting bracket on the wall with 12 M6 Phillips head screws.
Please refert to Figure 3-3.
2.Attach the inverter to the mounting bracket.
3.Fix the inverter with 2 M6 Phillips head screws.
Please refer to Figure 3-4.
10
Installation