Hoymile Technical Note Export Management Dtu Pro

Version 1.
3 (June 2020)
Contents
1. Brief Introduction of Export Management ....................................................................... 3

2. Terms and Definitions ..................................................................................................... 3
3. Introduction of RS485 connection .................................................................................. 3
4. Installing the Export Management system ..................................................................... 4
5. Main Web Pages Display Introduction............................................................................ 8
5.1 “Overview” page under “Solar Station” .................................................................. 8
5.2 “Meter” page under “Device List”........................................................................... 9
5.3 Report generating ............................................................................................... 10
Appendix A: Examples of Export Control ......................................................................... 11
Appendix B: Guideline for CT/Meter Installation .............................................................. 16
1. CT Installation ....................................................................................................... 16
2. Meter Installation ................................................................................................... 17
2.1 Meter Port Description ............................................................................................... 17
2.2 Chint Meter Installation Direction (Direct Connect) ................................................... 19
3. Installation Diagram for Chint and Wattnode Meter .............................................. 22
3.1 Chint Meter ................................................................................................................ 22
3.2 CCS Wattnode Meter................................................................................................. 25
Appendix C: How to choose Chint meter and CT for your Export Management station... 28
1. Meter Types........................................................................................................... 28
2. CT Types ............................................................................................................... 28
3. Meter Application Under Different Grid Type ......................................................... 28
Appendix D: Guidelines for DTU RS485 Connection ....................................................... 30
2 Export Management Technical Note

1. Brief Introduction of Export Management
To maintain the safety and quality level of the grid network, some countries’ local grid
authorities limit the PV generated power exporting to the grid. To meet this requirement,
Hoymiles has developed an Export Management Solution, which can help users install a
bigger PV system without violating export regulations.
2. Terms and Definitions
l Export: The power export to the grid.

l Production: The power produced by the PV microinverter system.
l Consumption: The power consumed by the local loads.
l Solar Meter: A meter installed at the output of solar microinverters and reads the
power/energy produced by the PV microinverter system.
l Load Meter: A meter installed at the load consumption side and reads the
power/energy consumed by the local load.
l Grid Meter: A meter installed at the grid connection side and reads the power/energy
exported to the grid.1
l Current Transformer (CT): A transformer clips on the wiring to detect the current
flow.
l Meter: A device measures for the energy flow.
l DTU: Data Transfer Unit, receive the data from microinverter and meter, then upload
them to the monitoring platform.
Production Export Import
PV Panel Microinverter Grid Meter

Consumption
Grid
Load
3. Introduction of RS485 connection
In Hoymiles Export Management system, Hoymiles gateway, DTU-Pro and the meter are
needed. The meter is installed at the load side or grid side to measure the consumption or
export power. If the export control is enabled, DTU-Pro will adjust the PV power
generation to ensure that the export power will not exceed the give limit by the user.
If the user just wants to know the accurate PV generation, just install the meter at the solar

side then DTU-Pro will collect the data from this meter and the user will get the PV
generation on Hoymiles monitoring platform.
If there is only one DTU used in small size PV system. The RS485 port of the meter is
connected directly to the RS485 port of DTU-Pro using shielded twisted pair.
Microinverter RS485
Grid
DTU-Pro Meter
Load
If there are more than one DTU involved in the installation. The RS485 port of the meter is
connected directly to the RS485 port of DTU-Pro in turn.
RS485
Grid
DTU-Pro Meter
Load
4. Installing the Export Management system
To install the Hoymiles Export Management, please perform the following steps. Before
installation, please confirm if you have the permission to this system. If not, please contact
your installer, dealer or Hoymiles technical support.
Step 1: Confirm the export control type:

l Type 1: Zero Export: to limit the exporting power to zero so that can prevent the
generated power feed back to the grid.
l Type 2: Export Limit: to limit the exporting power within a certain value.
l Type 3: Production and Consumption Monitoring: enable to measure the PV
generating under a high accuracy level.
Note: Refer to appendix A for more information about the Export Control.
Step 2: Confirm the Grid type: the grid type varies in different countries, please
choose the right grid type accordingly.

l Single Phase 230V: Mainly for residual systems in most countries except North
America and South America. The phase voltage may vary from 220V to 240V. The
outputs of microinverters are connected between live line and neutral line, L1~N.
L1
l Three Phase 230V/400V: Mainly for commercial systems in most countries except
North America and South America. The phase voltage may vary from 220V to 240V.
The outputs of microinverters are connected between live line and neutral line, L1~N,
L2~N or L3~N.
L1
L2
L3
l Spilit Phase 120V/240V: Mainly for residual systems in North America and South
America. The phase voltage may vary from 110V to 120V. The outputs of
microinverters are connected between two live lines, L1~L2.
L1
L2
l Three Phase 120V/208V: Mainly for commercial systems in North America and
South America. The phase voltage may vary from 110V to 127V. The outputs of
microinverters are connected between two live lines, L1~L2, L2~L3 or L3~L1.
L1
L2
L3
Step 3: Confirm the loads’ capacity for CT and Meter type selection:
Please make sure the CT/Meter range can cover the maximum loads power or PV system
generating power.
Note：Please refer to Appendix C for Meter and CT model selection.

Step 4: Prepare the shielded twisted pair RS485 cable with the proper length.
Step 5: Complete the Meter and CT wiring base on the system requirement (please
refer to Appendix B).
For Chint meter, please record the meter SN for further use. Please refer to the pictures
below for the Meter SN position:
For DDSU666 For DTSU666

Note: Please make sure the meter SN in one system will not be duplicated.
For WattNode meter, the 12 digits meter’s SN start with “10C1” and following 8 digits
please refer to the dip switch from the meter. The up position means “1” and down position
means “0”.
For example:
Continental Control Systems LLC Continental Control Systems LLC
A- WATTNODE® MODBUS A- WATTNODE® MODBUS

Modbus
Modbus
B+ WND-WR-MB B+ WND-WR-MB
Com C Com
C
X VN X VN
CT1 PCT1 VA CT1 PCT1 VA
CT2 PCT2 VB CT2 PCT2 VB
CT3 PCT3 VC CT3 PCT3 VC
1 1
0 0
Meter SN is: 10C111000000 Meter SN is: 10C111101000
Note：
1. Please make sure the meter SN in one system will not be duplicated. You can
differentiate the meter SN by re-position the dip switch on the meter.
2. Please only change from the first 6 digits from the left side for meter SN differentiation,
and keep the last 2 digits from right side both in the down position.

Step 6: Use RS485 cable connect A port from the meter to A port from DTU and B
port from meter to B port from DTU (please refer to Appendix D).
Step 7: Connect the power cable to DTU and power the DTU on.
Step 8: Complete the settings on the platform.

a. Create a new station from the monitoring platform.
b. Tick on the Box in front of “Enable Export Management”.
c. Select your Grid type
d. Choose the location that meter has been installed and input the Meter ID. Please also
input the CT rated current if it’s required.
Note: Please make sure the meter SN in one system will not be duplicated.
e. Enable the Export Power Limit function to enable the export control, input the limit
value and click “Finish” to complete the station creation.
Note: For Three phase system, please select the export control method:
Total: for most of the application will use this method, which controls the export by
total value from three phase (eg. Phase A = 500W, Phase B= -300W, Phase C =
-200W);
Per Phase: in certain country refer to the local grid authority’s requirement, need to
control the export on each phase (eg. Phase A = Phase B = Phase C = 0)
f. Go to the “Electrical phase separation” from station page and allocate all
microinverters into each phase (only apply for Three Phase system that use the
control export by “Per Phase” method).
Note: Please make sure the Microinverters that separated into each phase are
matching with the actual installation condition.
g. Click the “Phase network” and complete station creation (only apply for Three Phase
system that use the control export by “Per Phase” method).
5. Main Web Pages Display Introduction
5.1 “Overview” page under “Solar Station”

Part A (Station Generation Details):
l Today Energy: Today’s total energy generation.
l Current Power: Current power generated.
l Peak-hour: Total generation equals to how many hours fully generated.
l Today Energy: Total energy generated.
l Today reduction: Total CO₂ saved.
Part B (Energy Statistics):

l Solar energy: How much energy generated from PV system.
l Grid purchase: How much energy purchase from Grid.
Part C (Generation Diagram):

l Consumption Power: The power loads used.
l Solar Power: The power generated from PV system.
l Solar Production (Meter): The power export/consumed from Grid.
Note: there might be a point of time that from the diagram it shows the Solar Generated
power is higher than Consumption Power (as circled in red on the picture above), which is
caused by the data obtain timing from meter and DTU is inconsistent. It will not effect on
the actual power limit.
5.2 “Meter” page under “Device List”
You can change the CT settings from this page by click the “CT setting” bottom on the
right side of the list (as circled below).

5.3 Report generating
You can generate the report by choosing “Export management Station” under “Report”
bottom from the functional bar on the left side of the page.
Please input the station name and select the period of time on the top to see more details.

Appendix A: Examples of Export Control
The following examples illustrate that how to use the module of Export Control when you
create an Export Management Station.
Before enabling the Export Control, Types of Power Distribution Networks must be
selected, which are “Single Phase 230V”, “Three Phase 230V/400V”, “Split Phase
120V/240V”and “Three Phase 120V/208V”. These four can cover the power grid types in
most countries around the world.
When “Three Phase 230V/400V” is selected, the Limit Mode in Export Control contains
two modes, Total and Per Phase limit mode, while for other three types there’s only Total
Limit Mode.
Total: The total export power is the total solar production minus the total load
consumption. Export power on one phase can compensate for import power of another
phase.
Per Phase (Only for three phase 230V/400V PV system): When the user selects “Three
Phase 230V/400V”, which means the outputs of PV microinverters are connected to
phase voltage, Per Phase can be selected and limit value of each phase can be entered.
Export power of each phase will be limited to the value as shown in the picture below. The
total export power is the sum of the solar production minus the load consumption of each
phase.

The following examples has twelve hoymiles 4 in 1 microinverters HM-1500 connected to
a three phase system. The phase voltage is 230V and the maximum continuous output
AC power of this system is 18kW. The output power of all the PV modules is 20kW. Each
phase has four microinverters with maximum AC power 6kW. In each example, details
about how the export power, solar power are influenced by different conditions will be
given.
And in the module of Types of Power Distribution Networks, the Three Phase
230V/400V is selected.
l Example 1: Zero export power limit, total limit mode

In this example, the export power limit of the whole PV system is set to zero and the Total
Limit Mode is enabled.
Case 1
Solar production of every phase is lower than the load consumption, so all the loads are
powered from the solar production and the grid. Due to no export power to the grid, the
solar production will not be limited.
Phase1/kW Phase2/kW Phase3/kW Total/kW
Ideal Solar Production 2 2 2 6
Load Consumption 4 3 2 9
Real Solar Production 3 2 1 6
Export -2 -1 0 -3(zero export)
Note: The negative “-3” means 3kW power imported from the grid, no power injected into the grid.
Case 2
Solar production of one phase is higher than the load consumption, but other two phases
are opposite. But if the total solar production is lower than the total load consumption, the
solar production will not be limited in the Total Limit Mode.
Export -1 0 1 0(zero export)
Case 3
Total Solar Production is higher than the total load consumption, so the solar production of
every phase will be limited.

Export -1 0 1 0(zero export)
l Example 2: Zero export power limit, per phase limit mode

In this example, the export power limit of the whole PV system is set to zero and the Per
Phase Limit Mode is enabled.
Case 1
Solar production of every phase is lower than the load consumption, so the loads of every
phase are powered from the solar production and the grid. Due to no export power to the
grid, the solar production will not be limited.
Export -2 -1 0 -3(zero export)
Note: The negative “-3” means 3kW power imported from the grid, no power injected into the grid.
Case 2
Solar production of one phase is higher than the load consumption, solar production of
this phase will be limited in the Per Phase Limit Mode.
Export -1 0 0 -1(zero export)
Case 3
If solar production of any phase is higher than the corresponding load consumption, the
solar production of every phase will be limited.
Export 0 0 0 0(zero export)
l Example 3: 70% export power limit, Total limit mode

In Germany, due to the Renewable Energy Sources Act (EEG) 2012, the PV systems with
system capacity from 800W to 30kW should regulate output power or fixed limit of 70
percent in total limit mode at the point of common coupling.
In this example, with the PV modules output power 20kW, the export power limit should be
20kW*70%=14kW.
Case 1
The total solar production lower than the load consumption or higher than the load
consumption but not more than 70%, the solar production will not be limited.
Export -1 -1 -1 -3
Case 2
If the total solar production is 70% higher than the load consumption or more, the solar
production will be limited in the Total Limit Mode.
Export -4 -5 -5 -14
l Example 4: 6kW export power limit, per phase limit mode

In this example, the export power limit is set to 6kW, and the limit of each phase is set to
2kW.
Case 1
If the solar production of any phase is lower than the corresponding load consumption or
higher than the load consumption but not more than 2kW, the solar production will not be
limited.
Export -1 -1 -1 -3
Case 2
If the solar production of any phase is 2kW higher than the load consumption or more, the
solar production will be limited in the Per Phase Total Limit Mode.
Export -1 -2 -2 -5

l Example 5: No export control, solar production and load consumption display.
Some users do not need the export management, but only want to see the solar
production and load consumption on Hoymiles Monitoring Platform. The steps of creating
a new station is the same as the export management station, but in the module of Export
Control, the function of export power limit should be disable.

Appendix B: Guideline for CT/Meter Installation
1. CT Installation
Please make sure the CT (as known as Current Transformer) has been installed in the
right direction, otherwise will affect the current readings and Meter function.
Please refer to the following diagram for different type of CT installation:

l Position A: Meter install on the PV side, the CT arrow pointed to the Grid.
l Position B: Meter install on the Grid side, the CT arrow pointed to the Grid.
l Position C: Meter install on the Loads side, the CT arrow pointed to the Loads.

2. Meter Installation
2.1 Meter Port Description
a. Chint DDSU666 Single Phase Meter (Direct connect)
7 8
3 4
1 5 6
2
Ø Port 1: input port, connect to the L line;

Ø Port 2: output port, connect to the L line;
Ø Port 3: connect to the N line;
Ø Port 7: connect to the A port from DTU RS485 port;
Ø Port 8: connect to the B port from DTU RS485 port.
b. Chint DTSU666 Three Phase Meter (Direct connect)

Ø Port 1: input port, connect to the L line for Phase A;
Ø Port 3: output port, connect to the L line for Phase A;
Ø Port 4: input port, connect to the L line for Phase B;
Ø Port 6: output port, connect to the L line for Phase B;
Ø Port 7: input port, connect to the L line for Phase C;
Ø Port 9: output port, connect to the L line for Phase C;
c. Chint DTSU666 Three Phase Meter (Via CT)
Ø Port 1: connect to the red wire from CT for Phase A;

Ø Port 2: connect to the L line from Phase A;
Ø Port 3: connect to the black wire from CT for Phase A
Ø Port 4: connect to the red wire from CT for Phase B;
Ø Port 5: connect to the L line from Phase B;
Ø Port 6: connect to the black wire from CT for Phase B;
Ø Port 7: connect to the red wire from CT for Phase C;
Ø Port 8: connect to the L line from Phase C;
Ø Port 9: connect to the black wire from CT for Phase C;
Ø Port 10: connect to the N line from Grid;

d. CCS Wattnode Meter (Via CT)
Continental Control Systems LLC
1 A- WATTNODE® MODBUS
Modbus
2 B+ WND-WR-MB 9
C Com
X VN 10
3 PCT1 VA 11
CT1
4
5 CT2 PCT2 VB 12
6
7 PCT3 VC 13
CT3
8
1
0

Ø Port 2: connect to the B port from DTU RS485 port;
Ø Port 3: connect to the white wire of the CT for Phase A;
Ø Port 4: connect to the black wire of the CT for Phase A;
Ø Port 5: connect to the white wire of the CT for Phase B;
Ø Port 6: connect to the black wire of the CT for Phase B;
Ø Port 7: connect to the white wire of the CT for Phase C;
Ø Port 8: connect to the black wire of the CT for Phase C;
Ø Port 9: connect to the Ground line;
Ø Port 11: connect to the L line from phase A
Ø Port 12: connect to the L line from phase B;
Ø Port 13: connect to the L line from phase C
2.2 Chint Meter Installation Direction (Direct Connect)
Please make sure the Chint Meter has been installed in the right direction
(Direct connect), otherwise will affect the current readings and Meter function.
a. Single Phase Meter DDSU666, Load Side, Direct Connect

PV PV PV PV
Module Module Module Module
Hoymiles Hoymiles
MI-600 MI-600
Phase A
PV PV PV PV
Grid
Neutral
Hoymiles Hoymiles
MI-600 MI-600
1 3
Solar
2 4
Local Load
b. Single Phase Meter DDSU666, Grid Side, Direct Connect
PV PV PV PV
Hoymiles Hoymiles
MI-600 MI-600
Phase A
1 2
PV PV PV PV
Grid
Neutral
3 4
Hoymiles Hoymiles
MI-600 MI-600
Solar
Local Load
c. Single Phase Meter DDSU666, Solar Side, Direct Connect

PV PV PV PV
Hoymiles Hoymiles
MI-600 MI-600
Phase A
1 2
PV PV PV PV
Grid
Neutral
3 4
Hoymiles Hoymiles
MI-600 MI-600
Solar
Local Load
d. Three Phase Meter DTSU666, Load Side, Direct Connect

PV PV PV PV
Hoymiles Hoymiles
MI-600 MI-600
Phase A
Phase B
Phase C
Grid
PV PV PV PV
Neutral
Hoymiles Hoymiles
MI-600 MI-600
1
Solar 4
3 7 10
6
9
Local Load

e. Three Phase Meter DTSU666, Grid Side, Direct Connect
PV PV PV PV
Hoymiles Hoymiles
MI-600 MI-600
Phase A
1 3
Phase B
4 6
Phase C
Grid
PV PV PV PV 7 9
Neutral
Hoymiles Hoymiles 10
MI-600 MI-600
Solar
Local Load
f. Three Phase Meter DTSU666, Solar Side, Direct Connect
PV PV PV PV
Hoymiles Hoymiles
MI-600 MI-600
Phase A
1 3
Phase B
4 6
Phase C
Grid
PV PV PV PV 7 9
Neutral
Hoymiles Hoymiles 10
MI-600 MI-600
Solar
Local Load

3. Installation Diagram for Chint and Wattnode Meter
3.1 Chint Meter
a. Single Phase Meter with Single phase system (230V, Direct connect):
1 2 3 4
B 8 + -
Hoymiles DTU
A 7
Phase A
+ -
230Vac
Neutral
b. Three Phase Meter with Three Phase system (230V/400V, Direct connect):
1 3 4 6 7 9 10
+ - + - + - B 25
Hoymiles DTU
A 24
Phase A
+ -
400Vac
400Vac Phase B
+ - 230Vac 400Vac
230Vac Phase C
+ -
230Vac
Neutral
c. Three Phase Meter with Three Phase system (230V/400V, via CT):

1 3 4 6 7 9 2 5 8 10
+ - + - + - B 25
Black
Black
Black
Red Hoymiles DTU
Red
Red
A 24
Phase A
400Vac
400Vac Phase B
230Vac 400Vac
230Vac Phase C
Current Transformer 230Vac

(CT) Neutral
d. Three Phase Meter with Split Phase system (120V/240V, Direct connect):
1 3 4 6 10
+ - + - B 25
Hoymiles DTU
A 24
Phase A
+ -
240Vac
120Vac Phase B
+ -
120Vac
Neutral
e. Three Phase Meter with Split Phase system (120V/240V, via CT):
1 3 4 6 2 5 10
+ - + - B 25
Black
Black
Hoymiles DTU
Red
Red
A 24
Phase A
240Vac
Phase B
120Vac
120Vac
Current Transformer
(CT) Neutral

f. Three Phase Meter with Three Phase system (120V/208V, Direct connect):
1 3 4 6 7 9 10
+ - + - + - B 25
Hoymiles DTU
A 24
Phase A
+ -
208Vac
208Vac Phase B
+ - 120Vac 208Vac
120Vac Phase C
+ -
120Vac
Neutral
g. Three Phase Meter with Three Phase system (120V/208V, via CT):
1 3 4 6 7 9 2 5 8 10
+ - + - + - B 25
Black
Black
Black
Hoymiles DTU
Red
Red
Red
A 24
Phase A
208Vac
208Vac Phase B
120Vac 208Vac
120Vac Phase C

(CT) Neutral

3.2 CCS Wattnode Meter
a. WattNode with Single phase system (230V):

B- A- WATTNODE® MODBUS
Modbus
Hoymiles DTU
A+ B+ WND-WR-MB Ground
C Com
X VN
White
CT1 PCT1 VA
Black
Shorting Jumper CT2 PCT2 VB
CT3 PCT3 VC
Shorting Jumper
1
0
Phase A
230Vac
Current Transformer
(CT) Neutral

b. WattNode with Three Phase system (230V/400V):
Modbus
Hoymiles DTU
C Com
X VN
White
CT1 PCT1 VA
Black
White
CT2 PCT2 VB
Black
White
CT3 PCT3 VC
Black
1
0
Phase A
400Vac
400Vac Phase B
230Vac 400Vac
230Vac Phase C

(CT) Neutral
c. WattNode with Split Phase System (120V/240V):

Modbus
Hoymiles DTU
C Com
X VN
White
CT1 PCT1 VA
Black
White
CT2 PCT2 VB
Black
CT3 PCT3 VC
Shorting Jumper
1
0
Phase A
240Vac
Phase B
120Vac
120Vac
Current Transformer
(CT) Neutral

d. WattNode with Three Phase System (120V/208V):
Modbus
Hoymiles DTU
C Com
X VN
White
CT1 PCT1 VA
Black
White
CT2 PCT2 VB
Black
White
CT3 PCT3 VC
Black
1
0
Phase A
208Vac
208Vac Phase B
120Vac 208Vac
120Vac Phase C

(CT) Neutral

Appendix C: How to choose Chint meter and CT for your
Export Management station
There are 3 types of Chint meter and different types of CT that you can choose base on
the actual installation requirement.
1. Meter Types
Meter Model Type SN Description

DDSU666 (60A) Single Phase 10C011XXXXXX Direct connect, NOT via any kind
of CT
DTSU666 (80A) Three Phase 10C013XXXXXX Direct connect, NOT via any kind
of CT
DTSU666 (5A) Three Phase 10C012XXXXXX Compatible with 100A/5A,
300A/5A, and 600A/5A CT
2. CT Types
a. Current ratio: 100A/5A;

b. Current ratio: 300A/5A;
c. Current ratio: 600A/5A;
3. Meter Application Under Different Grid Type
Install Meter Install on Meter Install on Meter Install on PV

Grid Type
Method Load Side Grid Side Side
DTSU666 (100A/5A,
Single Phase Via CT / /
300A/5A, 600A/5A)
System
Direct
(230V) DDSU666(60A) DDSU666(60A) DDSU666(60A)
Connect
DTSU666 (100A/5A,
Three Phase Via CT / /
300A/5A, 600A/5A)
System
Direct
(230V/400V) DTSU666 (80A) DTSU666 (80A) DTSU666 (80A)
Connect
DTSU666 (100A/5A,
Split Phase Via CT / /
300A/5A, 600A/5A)
System
Direct
(120V/240V) DTSU666 (80A) DTSU666 (80A) DTSU666 (80A)
Connect
Three Phase DTSU666 (100A/5A,
Via CT / /
System 300A/5A, 600A/5A)

(120V/208V) Direct
DTSU666 (80A) DTSU666 (80A) DTSU666 (80A)
Connect
Note:
CCS Wattnode meter can be used on Load/Grid/PV side.

Appendix D: Guidelines for DTU RS485 Connection
The picture below indicates the RS485 A Port and B Port on DTU.
BA
l Scenario 1: if only one DTU installed on one system, when the RS485 cable length is
more than 200m it will be suggested to use the shorting jumper on the first two ports
from DTU’s RS485 port.
a. For Chint Single Phase Meter
7 8
3 4
B A
Shorting Jumper
1 5 62
b. For Chint Three Phase Meter
B A
Shorting Jumper
c. For WattNode Meter
A- WATTNODE® MODBUS
Modbus
B+ WND-WR-MB
C Com
X VN
CT1 PCT1 VA
B- A+
CT2 PCT2 VB
Shorting Jumper
CT3 PCT3 VC
1
0

l Scenario 2: when multiple DTU installed within one system, please connect the
DTUs one by one (as diagram shows below). Shorting jumper for the last two RS485
ports from last DTU will be suggested if the distance between microinverter and the
last DTU is more than 200 meters.
a. For Chint Single Phase Meter

7 8
3 4
B A B A
Shorting Jumper 1 5 62
b. For Chint Three Phase Meter
B A B A
Shorting Jumper
c. For WattNode Meter

A- WATTNODE® MODBUS
Modbus
B+ WND-WR-MB
C Com
B- A+ B- A+
X VN
CT1 PCT1 VA
CT2 PCT2 VB
Shorting Jumper
CT3 PCT3 VC
1
0

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Version 1.

1. Brief Introduction of Export Management ....................................................................... 3

2 Export Management Technical Note

2. Terms and Definitions

l Export: The power export to the grid.

Production Export Import

PV Panel Microinverter Grid Meter

3. Introduction of RS485 connection

3 Export Management Technical Note

4. Installing the Export Management system

Step 1: Confirm the export control type:

4 Export Management Technical Note

5 Export Management Technical Note

For DDSU666 For DTSU666

A- WATTNODE® MODBUS A- WATTNODE® MODBUS

CT1 PCT1 VA CT1 PCT1 VA

CT2 PCT2 VB CT2 PCT2 VB

CT3 PCT3 VC CT3 PCT3 VC

Meter SN is: 10C111000000 Meter SN is: 10C111101000

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Step 8: Complete the settings on the platform.

c. Select your Grid type

5. Main Web Pages Display Introduction

5.1 “Overview” page under “Solar Station”

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Part B (Energy Statistics):

Part C (Generation Diagram):

5.2 “Meter” page under “Device List”

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l Example 1: Zero export power limit, total limit mode

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l Example 2: Zero export power limit, per phase limit mode

l Example 3: 70% export power limit, Total limit mode

l Example 4: 6kW export power limit, per phase limit mode

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Please refer to the following diagram for different type of CT installation:

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2.1 Meter Port Description

a. Chint DDSU666 Single Phase Meter (Direct connect)

Ø Port 1: input port, connect to the L line;

b. Chint DTSU666 Three Phase Meter (Direct connect)

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c. Chint DTSU666 Three Phase Meter (Via CT)

Ø Port 1: connect to the red wire from CT for Phase A;

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Continental Control Systems LLC

Ø Port 1: connect to the A port from DTU RS485 port;

2.2 Chint Meter Installation Direction (Direct Connect)

a. Single Phase Meter DDSU666, Load Side, Direct Connect

c. Single Phase Meter DDSU666, Solar Side, Direct Connect

d. Three Phase Meter DTSU666, Load Side, Direct Connect

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3.1 Chint Meter

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Current Transformer 230Vac

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