Hybrid Skybox Installer quick guide – Sky Energy

Hybrid Skybox Installer quick guide

SkyBox AC wiring guide

GEN AUTOSTART

1 - Generator Auto start - No polarity necessary for two-wire auto start

2 - Generator Autostart

AC COUPLE / GENERATOR CONNECTION

3 - Active

4 - Earth

5 - Neutral

GRID CONNECTION

6 - Active

7 - Earth

8 - Neutral

BACK UP CONNECTION

9 - Active

10 - Earth (terminate your earth here - notice the earth missing from the terminal. This is to prevent dual M.E.Ns in a blackout)

11 - Neutral

CT CONNECTION - (Supplied in a small box inside SkyBox)

12 - A white wire of CT -CT-shielded comms cable can be used to extend the CT wire to the switchboard

13 - Black wire of CT

Please check all terminals and breakers in the Skybox switchboard are tight.

CT Installation guide - (ON-GRID ONLY)

The CT must be installed on the incoming mains cable with the arrow pointing downstream towards the SkyBox - away from the Grid.

Installation Modes

Mode 1 - No AC Couple

Mode 2

Mode 3

Mode 1 and AC Couple guide

Mode 1—If all loads are on the backup circuit, the CT can be installed at the incoming mains of the Skybox switchboard; otherwise, it must be installed in the Main switchboard at the incoming grid supply.

Mode 2 - AC Coupled - Line side

CT connects to incoming mains before any home loads and grid-connected inverters.

Select “Gen port use” then tick “AC couple on grid side” and press tick to save.

Mode 3 - AC Coupled - Gen Port

An existing solar inverter can be wired directly into the AC Couple / Generator port of the Skybox switchboard (connections 3,4 and 5). The existing CT/Meter can then be disconnected and removed from the Switchboard, as the SkyBox will now measure the inverter's production.

The existing inverter may require changing the Grid code to Micro Grid. The AC Coupled Inverter will not feed power into the skybox or throw an error code so that it will be obvious. Most inverters will work without changing the grid code. Refer to that inverter's instructions on how to do this. Then, follow the below instructions to set the SkyBox frequency to match.

Once connected, check these settings in the Skybox Inverter.

Press the cogwheel (top right of screen)
Select Gen Port Use
Press the down arrow on the screen
Select Micro Inv Input, then press the tick (bottom right of screen) to save

If the Grid code had to be changed on the existing inverter, adjust the AC couple Frz High to match the Skybox. The shutdown frequency should appear when you are changing the Grid code - typically, for a Microgrid, this is 52 - 53 Hz

Then adjust the ON - OFF Values of Micro Inv Input on the Skybox to
ON - 90% OFF - 95%

3-PHASE METER INSTALLATION

Install CT in the Main switchboard of the home and run 300V rated Cat6 (Pink Cat6) or shielded comms wire between the meter and meter port of the Deye inverter (behind inverter cover plate)

The pinout for the inverter side can be found on the last page of the Deye manual and here:

RJ45 = Pin 4 = B Pin 5 = A

CT CONNECTION

S1 - White wire - S2 - Black wire (CT arrow points towards Skybox - away from the grid)

1 - L1 2 - L2 3 - L3

TX+ A - TX- B (These are the communication wires to connect to terminals 13 - 14 in the switchboard - 12 = A - 13 = B)

POWER CONNECTION =

L1 - L2 - L3 (These leads measure line voltage) - Connect Neutral

LA - NA (This is to power the meter)

COMMISSIONING = Press the P⬇️ to display kWh per phase on the meter

Deye = Press “Advanced Function” - Page 2 - Select “Ex_Meter for CT” then tick Phase A - B and C for Net metering and select the Meter from the menu “Eastron-3P”

Battery Installation - BSL

It's recommended that batteries be installed from the bottom up. If the client only has two batteries, we want them in the bottom racks, as the Master communications cable will not reach the top in most Skyboxes. This also makes adding more batteries more accessible for the installer in the future.
Remove the two screws provided per battery rack, slide the battery into place then use the screws to fix the battery to the rack.

BATTERY COMMUNICATION

The bottom battery will be our master battery. Plug the communication cable into the CAN port.
Using the link cables provided with each battery, a daisy chain between each battery from the RS485 ports on the right-hand side (there are two ports. You can use either one as you daisy chain between batteries).
Now, set the DIP switches for each battery. (some batteries have 6 DIP switches - ignore 5 and 6)

	DIP #1	DIP #2	DIP #3	DIP #4
BATTERY - 1	ON	OFF	OFF	OFF
BATTERY - 2	OFF	ON	OFF	OFF
BATTERY - 3	ON	ON	OFF	OFF
BATTERY - 4	OFF	OFF	ON	OFF
BATTERY - 5	ON	OFF	ON	OFF
BATTERY - 6	OFF	ON	ON	OFF

BATTERY WIRING

ALL battery cables must be connected! If you have two pairs of cables from the inverter and one battery, connect all cables to that single battery.
It's important that all cables are linked together in parallel and that our battery leads are connected evenly across the batteries to provide even voltage and resistance. This ensures that all batteries charge and discharge evenly and that no single battery works harder than the others.

Please follow the pictures on the next page to understand better how to achieve this.

Battery Wiring

This example shows the battery connection for a Skybox with a 250A DC breaker, which has two pairs of battery leads. The 125A model for 5kW/5kVA Skybox will only have one pair of battery leads, so follow the connection guide for 5 - 2 batteries with positive connections at the top and negative at the bottom.

PYLONTECH BATTERIES

Follow the connection guide as 5 - 2 batteries.
Master battery-only DIP is set to 1 - ON and all other DIP switches remain OFF.

System Check

With the system installation completed, we can commission the system.

START UP PROCEDURE

Turn on all breakers on the main switchboard and Skybox sub board.
Connection to the grid will take 1 - 2 minutes as the inverter tests grid stability.
Turn on the PV isolators next to the Skybox sub-board.
Press the ON button on the Skybox inverter (on the Left side of the inverter, a blue light will signal that the inverter is ON).
Check that the Skybox inverter PV isolator is ON (it is on the left side of the inverter under the ON button).
Turn on the Battery isolator under the Skybox inverter.
Turn on all Battery breakers.
HOLD the reset button on the MASTER battery for 2-3 seconds until the battery lights up. Repeat this process on all batteries if the MASTER battery does not trigger wake-up.

Press the battery symbol on the inverter touchscreen.

Select Li-BMS at the bottom right of the screen.
It should display BSL or PYLON to confirm battery communication. If not, please check the battery comms wiring and DIP switches.

Press the solar panel symbol on the inverter touchscreen.

Check voltage and current for strings attached to Skybox MC4 receptacles.

AC COUPLED to GEN port - MODE 3

The inverter symbol should display above ON at the home screen
Press to check voltage and power generation

Look at the overview for solar generation, home loads, and grid import/export.

If something doesn't look right, check that the CT direction is correct and all breakers are on.
If the batteries are not discharging to a load on the system see next page.

INVERTER SERIAL NUMBER: In the Menu, select Device list = Inverter ID

System Work Mode

Depending on the time of install and testing you may see the Skybox is NOT discharging the batteries to power loads.

This will be because of the battery discharge settings set under System work mode - Page 2

From the factory we pre-set the Skybox to discharge batteries down to 20% but between 9am and 5pm the batteries are set to NOT discharge below 60 - 80%.

We do this to allow the batteries to attempt to charge and discharge a full cycle everyday if possible (weather permitting).

You can change these settings with the customer or during testing to see the batteries discharge as normal. Change the battery % as required and press the TICK symbol on the screen to save these settings.

The percentage set is the state of charge the batteries will stop discharging at.

The percentage set here will also be the stop charge value if grid or gen charging is set.

Gen charging is ticked from our factory but will not affect the system if there is no generator present.

If you would like to know more about these settings and how they affect the system to customize the end users experience its best to watch Deye Hybrid Inverter Quick Setup Guide Video on youtube. Otherwise SkyEnergy can configure these settings remotely once connected to Wi-fi.

Connecting to Wifi

LOCATE LOGGER BENEATH INVERTER

Have the customer download the Deye Cloud App and create an account.
Request access to the “site” from SkyEnergy
Once the Site is accessible select it then select “Device” at the bottom right of screen
Select “Logger” then “Wi-Fi Configuration”
You will Enter customers Wi-Fi details and then be prompted to connect to the Skybox loggers AP.
AP address and password can be found on the stick logger under the inverter.

ALL SYSTEMS MUST BE CONNECTED TO THE INTERNET SO SKY ENERGY CAN MONITOR THE SYSTEM FOR TECH SUPPORT.

Deye - Generator setup

The Skybox has been designed to accept a 50HZ two-wire auto start generator. The instructions below are based on this generator style.

The M.E.N must be removed from the generator, and any outlets on the generator must be disconnected/made safe and clearly labeled as such.
The generator's two-wire auto start connects to terminals 1 - 2 in the Skybox switchboard.
Settings for generator power need to be set on the Deye inverter relative to generator power.

(Example) - 7kVA Generator
7000 x .8 = 5600 (5.6kWs maximum generator power)
We Recommend kVA x .6 for generators as you don't want to run them at maximum load continuously.
We may need to set it closer to kVA x .5 depending on the generator (listen to the audible load of the generator during testing)

Setting generator on Deye inverter -

Press the cogwheel (top right of the touch screen)
Press Gen Port Use
Select Rated power and use the tactile UP - DOWN buttons to change the value.
Press the tick on the bottom right of the LCD screen to save the setting.

Make sure the generator breaker is a 2 pole breaker in the Skybox switchboard if not please change this so it's compliant.

TESTING

If connected to the Grid - turn off the Grid supply breaker (The inverter has an ATS to prevent the generator from feeding to the grid)
Ensure the Generator is set to Auto mode so the Skybox can turn it on and off.
Press the cogwheel (top right of screen), then select battery settings. Press the down arrow on the LCD screen and choose Gen Force to test the generator and auto-start function. Press the tick on the screen to save this setting, then press the Esc button to return to the main screen and see the generator charging batteries.
Turn off Gen Force once testing is complete.

The battery BMS controls how much power the batteries take, so although you may have settings at 7kW from Gen if only one battery is connected, that battery will limit the charge.

(100A @ 54.8V = 5480kWs) - 54.8V being battery charge voltage. The remaining power can be used to power loads while batteries charge.

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