FOX ESS 7-10.5kW Single Phase Storage Inverter Installation Guide

: July 2, 2024
: FOX-ESS

Table of Contents

Packing List
Installation Steps
Serial Port Connections
Wiring Steps
Inverter Start-Up
Inverter Switch Oﬀ
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

QUICK INSTALLATION GUIDE
7-10.5kW Single Phase
Storage Inverter

Packing List

Object	Quantity	Description
A	1	Inverter
B	1	Bracket
C	6/8	PV connectors (Only for KH) (3positive, 3negative)(KH 7-8)

(4positive, 4negative)(KH 9-10.5)
D| 6/8| PV pin contacts (Only for KH) (3positive, 3negative)(KH 7-8) (4positive, 4negative)(KH 9-10.5)
E| 2| AC connectors (1EPS, 1GRID)
F| 6| Expansion tubes & Expansion screws
G| 1| Earth terminal
H| 1| Communication connector
I| 1| Quick installation guide
J| 1| WiFi/LAN/4G (Optional)
K| 1| Meter (Optional)
L| 1| CT extension connector
M| 3| Hexagonal screws
N| 2| Battery connectors (1positive, Vnegative)
0| 2| Battery pin contacts (1positive, 1*negative)
P| 1| CT (with 10m cable)
Q| 1| RJ45

Installation Steps

Please make sure the inverter will be installed with a proper distance as shown below.

Step1: Fix the bracket on the wall
Choose the place you want to install the inverter.
Place the bracket on the wall and mark the position of the 6 holes from bracket. Drill holes with electric drill, make sure the holes are at least 50mm deep and 8mm wide, and then tighten the expansion tubes. Insert the expansion tubes into the holes and tighten them. Install the bracket with the expansion screws. Step2: Match the inverter with wall bracket
Mount the inverter to the bracket. Secure the inverter with the M5 screw and washer.

Serial Port Connections

Communication interface between the inverter and CT/Meter/485/DRM/BMS/Parallel 1/Parallel 2 are as follows with Rj45 connectors which should be inserted corresponding port in the inverter.

PIN/ Port	1	2	3	4	5	6	7	8
DRM	DRM1	DRM2	DRM3	DRM4	+3.3V	DRMO	GND	GND
Parallel 1	ESTOP	GND
COM	/	Parallel
CANH	Parallel
CANL	/	Parallel
485B	Parallel

Note: Rj45 corresponds to DRM/Paralle1/Parallel2/BMS.

For 16P:

PIN/ Port| 1| 2| 3| 4| 5| 6| 7| 8
---|---|---|---|---|---|---|---|---
CT/ Meter/ 485| Meter 485A| Meter 485B| 485B| 485A| CT2+| CT2-| CT1-| CT1+
PIN/ Port| 9| 10| 11| 12| 13| 14| 15| 16
CT/ Meter/ 485| /| K1| K2| K3| K4| /| DI| COM

Note:

CT1:For KH/KA, CT2: Grid tied inverter (if have).
Compatible Meter type: DDSU666 (CHINT), SDM230 (EASTRON).
CT
K1/K2, K3/K4 are dry contacts or external heat pump control signals.
DI/COM is an external input signal.

Wiring Steps

PV Wiring (For KH version Only)

Choose 12 AWG wire to connect the PV module.
Trim 6mm of insulation from the wire end.
Separate the DC connector (PV) as below.
Insert striped cable into pin contact and ensure all conductor strands are captured in the pin contact.
Insert pin contact through the cable nut to assemble into back of the male or female plug. When you feel or hear a “click” the pin contact assembly is seated correctly.
Crimp pin contact by using a crimping plier. Put the pin contact with striped cable into the corresponding crimping pliers and crimp the contact.
Unlock the DC connector:
– Use the speciﬁed wrench tool.
– When separating the DC+ connector, push the tool down from the top.
– When separating the DC- connector, push the tool down from the botiom.
– Separate the connectors by hand.

Battery Wiring

Choose 8 AWG wire to connect the battery.
Turn oﬀ the DC switch.
Trim 6mm of insulation from the wire end.
Separate the DC connector (battery) as below.
Insert striped cable into pin contact and ensure all conductor strands are captured in the pin contact.
Crimp pin contact by using a crimping plier. Put the pin contact with striped cable into the corresponding crimping pliers and crimp the contact.
Insert pin contact through the cable nut to assemble into back of the male or female plug. When you feel or hear a “click” the pin contact assembly is seated correctly.
Unlock the DC connector:
– Use the speciﬁed wrench tool.
– When separating the DC+ connector, push the tool down from the top.
– When separating the DC- connector, push the tool down from the bottom.
– Separate the connectors by hand.

AC Wiring
Cable dimensions

Power (kW) 0	7.0	8.0	9.0	10.0	10.0	10.5
Cable (ON-GRID)	Conduct Core Section: 13-16mm²

Outside Diameter: 16-22mm
Cable (EPS)| 8.0mm2| 8.0mm2| 8.0mm2| 8.0mm2| 8.0mm2| 8.0mm2
Micro-Breaker| 80A| 80A| 80A| 80A| 80A| 80A

Note:

If you don’t use the EPS function or use on-grid power to charge the batiery, the wiring conduct core section can use 8-10mm².
At the same me, you can choose 63A Micro-Breaker.
– Trim all the wires to 52.5mm and the PE wire to 55mm.
– Use the crimping pliers to trim 12mm of insulation from all wire ends as shown in the picture.
The information concerning 9.9kw applies to the Australian market only. L: Brown/Red Wire
N: Blue/Black Wire
PE: Yellow & Green Wire
Note: Please refer to local cable type and color for actual installation.

A. GRID Wiring

Separate the ON-GRID plug into three parts as below.
1. Hold the middle part of the female insert, rotate the back shell to loosen it, and detach it from female inset.
2. Remove the cable nut (with rubber insert) from the back shell.
Slide the cable nut and then the back shell onto the cable. Install the cable into the plug terminal and lock the screw, torque is (3.0+/-0.3 N.m).
Push the threaded sleeve into the socket, tighten up the cap on the terminal.
Push the threaded sleeve to connection terminal until both are locked tightly on the energy station.
Remove the ON-GRID connector: Press the bayonet out of the slot with a small screwdriver or the unlock tool and pull it out, or unscrew the threaded sleeve, then pull it out.

B. EPS Wiring

et the parts on the cable one by one.
Wire crimping cord end terminal can be inserted into the housing quickly according to the sign, torque 0.7 +/-0.1N·M.
The housing is inserted into socket.
Insert Seal and Clamp Finger into socket, then tighten the nut, torque 8+/-2N·m.
Push the threaded sleeve to connection terminal until both are locked tightly on the inverter.
Remove the EPS connector: press the connector unlock with a small screwdriver or the unlock tool and pull it out.

Grounding Wiring
Trim 6mm of insulation from the wire end.

Insert striped cable into earth terminal and ensure all conductor strands are captured in the earth terminal.
Crimp earth terminal by using a crimping plier. Put the earth terminal with striped cable into the corresponding crimping pliers and crimp the contact . Use the crimping pliers to press the ground cable into the ground terminal, screw the ground screw with screwdriver as shown below.

Inverter Start-Up

Please refer to the following steps to start up the inverter.

Ensure the inverter ﬁxed well.
Make sure all wirings are completed.
Make sure the CT/meter is connected well.
Make sure the battery is connected well.
Make sure the external EPS contactor is connected well (if needed).
Make sure the BMS buttons and battery switch oﬀ.6.
Turn on the PV/DC switch (for Hybrid version only), AC breaker, EPS breaker and battery breaker.
Enter the setings page, default password is ‘0000’, select START / STOP
and set it to start (long press “enter” to quickly go to the START / STOP page).

Note:

When starting inverter for the ﬁrst time, the country code will be set by default to the local setings. Check if the country code is correct.
Set the time on the inverter using the bution or by using the APP.

Inverter Switch Oﬀ

Please refer to the following steps to switch oﬀ the inverter.

Enter the setings page, select START / STOP and set it to stop.
Turn oﬀ the PV/DC switch (for Hybrid version only), AC breaker, EPS breaker and battery breaker.
Wait 5 min before you open the upper lid (if in need of repair).

Note:
The Ethernet port under inverter is only for local monitoring use (Via register), LAN connection need to purchase an separate product Smart LAN.
Please scan the QR Code and follow the steps below to download our latest multi-language User Manual/Quick Installation Guide:
Scan the QR Code → Select your Language → Choose to download User Manual or Quick Installation Guide → Download

https://www.foxesscloud.com/document/fox/doc.html?series=k

V1.3
10-203-00180-03

Documents / Resources

| FOX ESS 7-10.5kW Single Phase Storage Inverter [pdf] Installation Guide
7-10.5kW, 7-10.5kW Single Phase Storage Inverter, 7-10.5kW Storage Inverter, Single Phase Storage Inverter, Storage Inverter, Inverter
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