MTEC Energy Butler Series User manual

Energy Butler Hybrid Series
User Manual 1
Energy Butler Series
USER MANUAL
September 2021

Energy Butler Hybrid Series
User Manual 2
To secure the full 10-years battery product warranty, be sure to install the M-TEC three phase Energy Butler Series hybrid storage
system by qualified installers.
All specifications and descriptions contained in this document are verified to be accurate at the time of printing. However, because
continuous improvement is a goal at M-TEC, we reserve the right to make product modifications at any time.
The images provided in this document are for demonstration purposes only. Depending on product version and market region,
details may appear slightly different.
To communicate any inaccuracies or omissions in this manual, please contact us:[phone]
Proper disposal of batteries is required. Refer to your local codes for disposal requirements.
All information in this document is subject to copyright and other intellectual property rights of M-TEC GmbH. and its licensors. This
material may not be modified, reproduced or copied, in whole or in part, without the prior written permission of M-TEC GmbH.
and its licensors. Additional information is available upon request. The following are trademarks or registered trademarks of M-TEC
GmbH. :
All other trademarks contained in this document are the property of their respective owners and their use herein does not imply
sponsorship or endorsement of their products or services. The unauthorized use of any trademark displayed in this document or on
the product is strictly prohibited.
Warning:
Read this entire document before installing or using M-TEC three phase Energy Butler Series Hybrid storage system. Failure to do
so or to follow any of the instructions or warnings in this document can result in electrical shock, serious injury, or death, or can
damage M-TEC three phase Energy Butler Series Hybrid storage system, potentially rendering it inoperable.
PRODUCT SPECIFICATIONS
ERRORS OR OMISSIONS
ELECTRONIC DEVICE: DO NOT THROW AWAY
© M-TEC Energy, a.s. All rights reserved.

Energy Butler Hybrid Series
User Manual 3
1. Important Safety Instructions -------------------------------------------------------4
2. Inverter Introduction -------------------------------------------------------------------8
3. Battery Introduction ------------------------------------------------------------------18
4. Mechanical Installation ---------------------------------------------------------------23
2.1 Basic features ---------------------------------------------------------------------------8
2.4 Specifications -------------------------------------------------------------------------15
3.2 Specifications -------------------------------------------------------------------------21
3.3 Standard Packing List ----------------------------------------------------------------22
4.1 Selection of Installation Location -------------------------------------------------23
4.2 General installation steps ------------------------------------------------------------24
4.3 Cables Connection -------------------------------------------------------------------27
2.2 Appearance Introduction -------------------------------------------------------------12
3.1 Appearance Introduction -------------------------------------------------------------18
2.3 Display Interface ----------------------------------------------------------------------14
2.5 Standard Packing List ------------------------------------------------------------------17
8. Troubleshooting ------------------------------------------------------------------------47
7. General Operation ---------------------------------------------------------------------45
8.1 Fault Messages ---------------------------------------------------------------------47
7.1 Display Operation ----------------------------------------------------------------------45
8.2 Maintenance --------------------------------------------------------------------------48
7.2 Auto-Test ------------------------------------------------------------------------------46
7.3 Monitoring and Configuration ------------------------------------------------------46
5.1 Electrical Connection ------------------------------------------------------------------28
5. Inverter Cables Connection ----------------------------------------------------------28
5.2 Communication Connection ---------------------------------------------------------39
5.3 Monitoring Device Installation -----------------------------------------------------43
6. System Start and Stop --------------------------------------------------------------44
CONTENTS

Energy Butler Hybrid Series
User Manual 4
1. Important Safety Instructions
Save these important safety instructions.
M-TEC three phase Energy Butler Series Hybrid storage system installation and repair instructions assume knowledge of high
voltage electricity and should only be performed by M-TEC Certified Installers. M-TEC assumes no liability for injury or property
damage due to repairs attempted by unqualified individuals or a failure to properly follow these instructions. These warnings and
cautions must be followed when using our product.
Symbols in this document
Danger
Warning
Caution
Attention
Note
This manual uses the following symbols to highlight important information:
Used to warn of urgent dangerous situations, if not avoided, it could result in death or serious personal
injury.
Indicates a hazardous situation which, if not avoided, could result in injury or death.
Indicates a hazardous situation which, if not avoided, could result in damage to the equipment.
Used to transmit the safety warning information about equipment or environment, if not avoided, it
may cause equipment damage, data loss, equipment performance degradation or other unpredictable
results. “Attention” does not involve personal injury.
Indicates an important step or tip that leads to best results, but is not safety or damage related.

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User Manual 5
Symbols on the Hybrid Inverter
Power indicator.
Grid status indicator.
Inverter status indicator.
Battery SOC and status indicator.
Grounding symbol, the inverter casing needs to be properly grounded.
Symbols on the Packing box
Handle with care.
This side up.
Keep dry.
Stacked layers.
Symbols on the Inverter nameplate
The inverter cannot be disposed of with household waste.
Please read the instructions carefully before installation.
TUV certification.
Danger. Risk of electric shock!
The surface is hot during operation and no touch is allowed.
Do not touch any internal parts of the inverter until 5 min after being disconnected from the mains and
PV input.
CE mark, the inverter complies with the requirements of the applicable CE guidelines.
Electric shock hazard, it is strictly forbidden to use the person to disassemble the inverter casing.

Energy Butler Hybrid Series
User Manual 6
GENERAL INFORMATION
Warning: Read this entire document before installing or using M-TEC three phase Energy Butler Series Hybrid storage
system. Failure to do so or to follow any of the instructions or warnings in this document can result in electrical shock,
serious injury, or death, or can damage M-TEC LFP Battery, potentially rendering it inoperable.
Warning: A battery can present a risk of electrical shock, fire, or explosion from vented gases. Observe proper
precautions.
Warning: M-TEC three phase Energy Butler Series Hybrid storage system installation must be carried out only by M-TEC
Certified Installers, who have been trained in dealing with high voltage electricity.
Warning: The product is heavy and challenging to lift.
Warning: Use M-TEC LFP Battery only as directed.
Warning: Do not use M-TEC LFP Battery if it is defective, appears cracked, broken, or otherwise damaged, or fails to
operate.
Warning: Before beginning the wiring portion of the installation, first power off the inverter and then open the AC and DC
disconnect switches (if applicable for the installation).
Warning: Do not attempt to open, disassemble, repair, tamper with, or modify M-TEC LFP Battery. M-TEC LFP Battery is
not user serviceable. LFP Cells in M-TEC Battery are not replaceable. Contact the M-TEC Authorized Reseller who sold the
M-TEC LFP Battery for any repairs.
Warning: Do not connect M-TEC LFP Battery to alternating current carrying conductors. M-TEC All-in-one storage system
including battery and inverter must be wired to either an inverter or a DC combiner panel that is then wired to an inverter.
No other wiring configuration may be used.
Warning: M-TEC LFP Battery contains components, such as switches and relays, that can produce arcs or sparks.
Warning: To protect M-TEC LFP Battery and its components from damage when transporting, handle with care. Do not
impact, pull, drag, or step on M-TEC LFP Battery. Do not subject M-TEC LFP Battery to any strong force. To help prevent
damage, leave M-TEC LFP Battery in its shipping packaging until it is ready to be installed.
Warning: Do not insert foreign objects into any part of M-TEC LFP Battery.
Warning: Do not expose M-TEC LFP Battery or its components to direct flame.
Warning: Do not install M-TEC LFP Battery near heating equipment.
Warning: Do not immerse M-TEC LFP Battery or its components in water or other fluids.

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User Manual 7
ENVIRONMENTAL CONDITIONS
Warning: Install M-TEC LFP Battery at a height that prevents damage from flooding.
Warning: Operating or storing M-TEC LFP Battery in temperatures outside its specified range might cause damage to M-TEC
LFP Battery.
Warning: Do not expose the M-TEC LFP Battery to ambient temperatures above 60°C (140°F) or below -30°C (-22°F).
Caution: Ensure that no water sources are above or near M-TEC LFP Battery, including downspouts, sprinklers, or faucets.
Caution: Do not use cleaning solvents to clean M-TEC LFP Battery, or expose M-TEC LFP Battery to flammable or harsh
chemicals or vapors.
Caution: Do not use fluids, parts, or accessories other than those specified in this manual, including use of non-genuine
M-TEC parts or accessories, or parts or accessories not purchased directly from M-TEC or a M-TEC-certified party.
Caution: Do not place M-TEC LFP Battery in a storage condition for more than one (1) month, or permit the electrical feed
on the M-TEC LFP Battery to be severed for more than one (1) month, without placing M-TEC LFP Battery into a storage
condition in accordance with M-TEC’s storage specifications.
Caution: Do not paint any part of M-TEC LFP Battery, including any internal or external components such as the exterior
shell or casing.
Caution: Do not connect M-TEC LFP Battery directly to photovoltaic (PV) solar wiring.
Caution: When installing M-TEC LFP Battery in a garage or near vehicles, keep it out of the driving path. If possible, install
the M-TEC LFP Battery on a side wall and/or above the height of vehicle bumpers.

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User Manual 8
2. Inverter Introduction
2.1 Basic features
Function
M-TEC 10kW inverter is also known as hybrid inverter or storage inverter, which is mainly used to combine the PV array, lithium
battery, loads and power grid to realize intelligent power management and dispatching.
Applicable Grid Type
The applicable grid types of the M-TEC 10kW are TN-S, TN-C, TN-C-S and TT. When applied to the TT grid, the voltage of N to
PE should be less than 30V.
Schematic Diagram of Hybrid System
The hybrid solar system is usually composed of the PV array, hybrid inverter, lithium battery, loads and power grid.

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User Manual 9
General Mode --- Suficient PV Generation General Mode --- Insuicient PV and Baery
Operation Modes
M-TEC Hybrid inverter has the following basic operation modes and you can configure the operation mode as per your preference
in the App.
In this working mode, when the power from the PV array is sufficient, PV power will supply the loads, battery, and grid by the
following sequence:
Loads>Battery>Grid.
PV power will supply the loads with priority, and secondly charge the battery if exceed PV energy, and then feed to the grid. (You
can set the power to the grid to 0W if the local grid doesn’t allow through APP or inverter display).
When the PV power is insufficient, the battery will discharge to supply loads, and the grid will join in if the battery power is not
enough.
Setting Step: General Mode-->Pmax.
In this working mode, the customer can set the maximum allowable power from grid("Pmax") through App or inverter display.
When the loads consumption less than the Pmax, loads are supplied by the PV array and grid together.
When the loads consumption more than the Pmax, the power exceeded Pmax (cannot be higher than the inverter max output
power) will be supplied by the inverter. PV power will take the priority to supply loads and if not enough, the battery will support
the real-time loading immediately.
* To realize the “Peak Load Shifting” function, the load power that exceeded Pmax has to be within the inverter max output power, otherwise,
the inverter will only output the max power which allowed.
1/5 Maximun Solor Self-consumption
2/5 Demand Response
Demand Response --- Loading<Pmax
Demand Response --- Loading>Pmax

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User Manual 10
In this working mode, the customer can set time-based scheduled charge and discharge by App, inverter will use the power from
PV or grid(selectable by APP) to charge the battery in the scheduled period.
In this working mode, the inverter will use the power from PV or grid (Set by App) to charge the battery with full power and top
priority until it is fully charged, and as long as the grid is there, the battery won’t discharge.
When the grid is cut off, power from PV and battery will suppy real-time loading connected to inverter back-up port immediately
within 10ms.
Inverter will use power from PV and battery to supply loads in the scheduled period and the insufficient part will be supplied by the
grid.
4/5 Peak Valley Mode
3/5 UPS Power Back-up
Peak Valley Mode --- Peak Valley Mode
Peak Valley Mode --- Peak Valley Mode
* During UPS mode, if baery long time no discharge, the inverter will discharge and charge baery periodically(every 1 week) with small
current roughly 1A to to reset baery SOC.

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User Manual 11
Off-grid peak load capability
M-TEC hybrid inverter supports max 2 times off-grid instantaneous overload of rated output power, and each phase support 1.25
times continuous overload of rated output power but only one of them can reach 1.25 times output power at the same time.
Storage conditions
1) Inverter must be stored in its original packaging.
2) The storage temperature should be in the range of -30 ° C and + 60 ° C, and the relative humidity stored is less than 90%.
3) If a batch of inverters needs to be stored, the height of each pile should be no more than 6 levels.
In the purely off-grid mode, power from PV will supply the back-up loads firstly and then charge the battery if there is surplus PV
generation.
When the power from PV is weak, the battery will discharge to supply back-up loads together with or without PV.
5/5 Smart Micro Grid Solution(Off-grid)
O-Grid --- Charge
O-Grid --- Discharge

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User Manual 12
2.2 Appearance Introduction
PV1
ON
OFF
PV2 BAT
WiFi/GPRS
METER BMS
COM
ON-GRID ON-GRID
BAK-UP BAK-UP
① ②
⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪
⑫
④
③
②
①
③
④
⑤
⑥
⑧
⑨
⑪
⑩
⑫
⑦
Inverter in all-in-one kit
Display
Handle
Inverter positioner
Reserved connection hole
DC Switch(PV)
DC Input Terminal(PV)
Battery Input Terminal
Back Rail
WIFI/LAN Port
Com Port
Back-up Output Terminal
On-grid Output Terminal
698mm
613mm
356mm
Front
Bottom
Bottom(with inverter)
Right side

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User Manual 13
Inverter
550mm
175mm410mm
Front
Boom
Back
Right side
PV1
ON
OFF
PV2B AT
WiFi/GPRS
METER BMS
COM
ON-GRID ON-GRID
BAK-UP BAK-UP

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User Manual 14
2.3 Display Interface
Item Indicator Status Description
1Battery SOC and
Status Indicator
Off Battery not connected or communication fault.
Always on Battery is discharging or waiting, indicator shows battery SOC.
Single indicator
flash Battery is charging, indicator shows battery SOC.
2Power
Indicator
Off Inverter no AC output.
Quick flashing Inverter entered self-test status.
Always on Inverter works normal.
3Grid
Indicator
Off Disconnected with grid.
Slow flashing Inverter detected grid but not running in on-grid mode.
Always on Inverter works in on-grid mode.
4Alarm
Indicator
Off The inverter is running normally.
Slow flashing The monitoring device is not connected to the router or is not
connected to the base station.
Quick flashing The monitoring device is connected to the router or connected to the
base station but not connected to the server.
Orange A waring is detected but inverter still working, view the warning info
on the display.
Red An alarm or fault is detected, view the fault info on the display.
5 Display
On Display the inverter operation information.
Off Display off to save power, press the button to wake up the display.
6 Button Physical button Switch display information and set parameters by short press or long
press.
Battery SOC and Status Indicator
Power Indicator Display
Grid Indicator
Alarm Indicator Button

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User Manual 15
2.4 Specifications
①Max apparent power from the grid means the maximum power imported from the utility grid used to satisfy the backup loads and charge the
battery.
②The output power will exceed the rated value only when the power in the PV array is sufficient, and the duration of the overload is relating to
the overload power.
③Single-phase peak output power is the single-phase max output that won’t trigger overload protection, only 1 phase can reach peak output
power at the same time.
Model 6kW-3P 8kW-3P 10kW-3P 12kW-3P
Efficiency
Max. Input Power (W) 7,800 10,400 13,000 15,600
Start-up Voltage (V) 180 180 180 180
Max. DC Input Voltage (V) 1,000 1,000 1,000 1,000
Rated DC Input Voltage (V) 620 620 620 620
MPPT Voltage Range (V) 200-850 200-850 200-850 200-850
No. of MPP Trackers 2 2 2 2
No. of PV Inputs 1/1 1/1 1/1 1/1
Max. Input Current (A) 13/13 13/13 13/13 13/13
Max. Short-circuit Current (A) 18/18 18/18 18/18 18/18
Battery
Battery Type LithiumBattery(withBMS)
Battery Communication Mode CAN/RS485
Battery Voltage Range (V) 180-750
Max. Charge/Discharge Current (A) 25/25
Rated Current of Built-in Fuse (A) 63
Output(Grid)
Rated Output Power (kW) 6 8 10 12
Max. Output Power (kW) 6.6 8.8 11 13.2
Max. Input Apparent Power (kVA) 12①16①16.5①16.5①
Max. Charging Power of Battery (kW) 6 8 10 12
Rated Output Voltage (V) 3/N/PE,230(400)
Rated AC Frequency (Hz) 50/60Hz 45-55Hz/55-65Hz
Max. Output Current (A) 10 13.3 16.5 20
Power Factor 0.8leading…0.8lagging
Max. Total Harmonic Distortion <3%@RatedOutputPower
DCI <0.5%In
Output(Back-up)
UPS Switching Time <10ms
Max.OutputApparentPower(kVA) 6.6 8.8 11 13.2
Peak Overload Apparent Power (kVA) 12②，60s 16②，60s 20②，60s 20②，60s
Single-phase Peak Output Power(kVA) 2.6③3.3③4③5③
Nominal Output Voltage (V) 230(400) 230(400) 230(400) 230(400)
Nominal Output Frequency (HZ) 50/60 50/60 50/60 50/60
Output THDv(@Linear Load) <3% <3% <3% <3%
Parallel Capability Max. 10 inverters can be paralleled at grid-side, back-up ports can be paralleled by
firmwareupdatelater

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Model 6/8/10/12KW-3P
Efficiency
Max. Efficiency 98.2%
European Efficiency 97.4%
Max. Battery Charging Conversion Efficiency 97.3%
Max. Battery Discharge Conversion Efficiency 97.3%
Protection
DC Reverse Polarity Protection Integrated
Battery Input Reverse Connection Protection Integrated
Insulation Resistance Protection Integrated
DC Switch Optional
Surge Protection Integrated ( Type Ⅱ)
Over-temperature Protection Integrated
Residual Current Protection Integrated
Islanding Protection Frequency Shift, Integrated
AC Over-voltage Protection Integrated
Overload Protection Integrated
AC Short-circuit Protection Integrated
General Data
Over Voltage Category PV: Ⅱ；Main: Ⅲ
Dimensions (mm）550W*410H*175D
Weight (KG) 28
Protection Degree IP65
Self-consumption at Night (W) <15
Topology Transformer-less
Operating Temperature Range (°C) -30~60
Relative Humidity 0~100%
Operating Altitude (m）3000
Cooling Natural Convection
Noise Level (dB) <25
Display OLED & LED
Communication WiFi / LAN(Optional)
Compliance IEC62109、IEC62116、VDE4105、VDE0126、AS4777、RD1699、
NBR16149、IEC61727、IEC60068、IEC61683、EN50549、EN61000

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2.5 Standard Packing List
The package of the inverter includes the following accessories. Please check whether the accessories in the packing box are
complete at the first time when receiving the goods.
Inverter in all-in-one kit×1
AC Cover, Screw
BAT Plug
Monitoring Device (optional)
PV Terminal
PE Terminal
Expansion Bolt
M-TEC Meter with 3 CTs
Cord End Terminal
Back Up AC Terminal
Cord End Terminal
On Grid AC Terminal
Cord End Terminal

Energy Butler Hybrid Series
User Manual 18
356mm
155mm
137mm
698mm
3. Battery Introduction
3.1 Appearance Introduction
②
①
③
④
⑤
⑥
⑧
⑨⑪
⑩
⑫
⑬
⑦
②
①
③
④
⑤
⑥
⑧
⑨
⑪
⑩
⑫
⑬
⑦
Sub-Master BMS
Inverter positioner
Top
Front
Boom
Left side
Inverter COM
Service COM
Earth point
Battery DC Output +
Battery DC Output -
DC Isolator
Indicator light
Battery positioner socket
Terminal positioner socket
Battery Negative B-
Battery Negative B+
Earth cable

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User Manual 19
356mm
155mm
137mm
698mm
①
⑪
②
⑫
⑬⑭
⑮
③④
⑤
⑥
⑦
⑧
⑨
⑩
②
①
③
④
⑤
⑥
⑧
⑨
⑪
⑩
⑫
⑬
⑬
⑬
⑦
Baery module
Battery positioner plug
Top
Front Right side
Boom
Terminal positioner plug
Earth cable
BMU Power Supply -
BMU Power Supply +
CAN-L
CAN-H
Battery Positive B+
Negative pole
Handle
Battery positioner socket
Positive pole
Battery Positive B+
Earth cable
Terminal positioner socket

Energy Butler Hybrid Series
User Manual 20
356mm
698mm
①
②
③
④
⑤
⑥
⑦
②
①
③
④
⑤
⑥
⑦
Base module
Battery positioner plug
Terminal positioner plug
Earth cable
CAN COM Resistor(Pre-installed)
CAN COM Resistor(Pre-installed)
Battery Positive B+
Battery Positive B+