Master HV

Master HV 300 A 48 Vdc up to 900 Vdc
Master HV 500 A 48 Vdc up to 900 Vdc

Master HV

Master HV 300 A 48 Vdc up to 900 Vdc
Master HV 500 A 48 Vdc up to 900 Vdc

High Voltage BMS

The Master HV is the safety and control unit for high voltage battery systems. This high voltage BMS is suitable in the range of 48 Vdc up to 900 Vdc. Each battery string requires a Master BMS. To increase the system capacity, connect multiple strings in parallel. As a result your system voltage and capacity are fully scalable. This means: flexible in design and system integration made easier. Besides the safety and control functions, the Master HV monitors and tracks all relevant parameters to provide insight into the battery status and energy consumption. The compact design makes it ideal for use in applications with limited space.

All essential components for a safe and reliable battery system are integrated in this compact designed device.

▶ Integrated pre-charge circuit
▶ Safety contactors in positive and negative power paths
▶ High Voltage Interlock Loop (HVIL)
▶ Internal event logging

▶ CAN-Bus communication
▶ Tracking State-Of-Health and State-Of-Charge
▶ Monitoring of all battery parameters

High Voltage BMS

High Voltage BMS

The Master HV is the safety and control unit for high voltage battery systems. This high voltage BMS is suitable in the range of 48 Vdc up to 900 Vdc. Each battery string requires a Master BMS. To increase the system capacity, connect multiple strings in parallel. As a result your system voltage and capacity are fully scalable. This means: flexible in design and system integration made easier. Besides the safety and control functions, the Master HV monitors and tracks all relevant parameters to provide insight into the battery status and energy consumption. The compact design makes it ideal for use in applications with limited space.

All essential components for a safe and reliable battery system are integrated in this compact designed device.

▶ Integrated pre-charge circuit
▶ Safety contactors in positive and negative power paths
▶ High Voltage Interlock Loop (HVIL)
▶ Internal event logging

▶ CAN-Bus communication
▶ Tracking State-Of-Health and State-Of-Charge
▶ Monitoring of all battery parameters

▶ Integrated pre-charge circuit
▶ Safety contactors in positive and negative power paths
▶ High Voltage Interlock Loop (HVIL)
▶ Internal event logging
▶ CAN-Bus communication
▶ Tracking State-Of-Health and State-Of-Charge
▶ Monitoring of all battery parameters

Master HV 48V-900V

High Voltage

Use the Master HV for systems of 48 Vdc up to 900 Vdc.  The power connectors enable the Master HV to easily connect a series of batteries. The Amphenol PowerLok connectors are robust and have an integrated HVIL (High Voltage Interlock Loop) to monitor the connection. The low contact resistance allows for currents up to 500 A continuously.

Acces to Data

The MG Master HV stores information on its internal memory with daily reports and special events, such as fail-safe triggers. Extract the recorded information from the Master HV and save it to a file with the MG Diagnostic Tool. Besides, remotely monitor and control your battery system with the MG Energy Portal. This web-based platform gives direct insight into all relevant data and essential battery parameters of your installation.

High Voltage BMS Installation
High Voltage BMS DNV GL

Master HV Certification

This high voltage BMS comes with the following type approvals as a standard:

▶ DNV-GL
▶ Lloyds
▶ ES-Trin 62619 & 62620

Master HV 48V-900V

High Voltage

Use the Master HV for systems of 48 Vdc up to 900 Vdc.  The power connectors enable the Master HV to easily connect a series of batteries. The Amphenol PowerLok connectors are robust and have an integrated HVIL (High Voltage Interlock Loop) to monitor the connection. The low contact resistance allows for currents up to 500 A continuously.

Acces to Data

The MG Master HV stores information on its internal memory with daily reports and special events, such as fail-safe triggers. Extract the recorded information from the Master HV and save it to a file with the MG Diagnostic Tool. Besides, remotely monitor and control your battery system with the MG Energy Portal. This web-based platform gives direct insight into all relevant data and essential battery parameters of your installation.

High Voltage BMS Installation
High Voltage BMS DNV GL

Master HV Certification

This high voltage BMS comes with the following type approvals as a standard:

▶ DNV-GL
▶ Lloyds
▶ ES-Trin 62619 & 62620

System Redundancy

Combined Battery Banks

Use the SmartLink MX when installing two or more MG Masters. The SmartLink collects and combines the data from all your devices. It transmits this data onto the CAN-Bus and makes it available for third party devices. The unique “combined mode” function offers the possibility to create a redundant system. Use the SmartLink MX to configure this combined mode. Besides creating a redundant system, it also allows you to create large battery banks.  

In other words, your battery system will always be operational and communication and power to the charger and loads will be maintained.

Redundant High Voltage System

System Redundancy

Combined Battery Banks

Use the SmartLink MX when installing two or more MG Masters. The SmartLink collects and combines the data from all your devices. It transmits this data onto the CAN-Bus and makes it available for third party devices. The unique “combined mode” function offers the possibility to create a redundant system. Use the SmartLink MX to configure this combined mode. Besides creating a redundant system, it also allows you to create large battery banks.  

In other words, your battery system will always be operational and communication and power to the charger and loads will be maintained.

Protection & Control

Battery Management System

The main function of the Master HV is protecting all connected battery modules. This high voltage BMS collects all battery data and constantly monitors essential parameters. The Master HV includes two built-in safety contactors, one in the positive and one in the negative power path. The safety contactors disconnect the batteries directly from the chargers and loads when needed.

The Master HV includes many safety features as a standard, to ensure a safe and reliable battery installation:

▶ Double Safety Contactor
▶ High Voltage Interlock Loop
▶ Integrated Pre-Charge Circuit

CAN-Bus_Visual_Master_HV_Mobile2

Protection & Control

Battery Management System

The main function of the Master HV is protecting all connected battery modules. This high voltage BMS collects all battery data and constantly monitors essential parameters. The Master HV includes two built-in safety contactors, one in the positive and one in the negative power path. The safety contactors disconnect the batteries directly from the chargers and loads when needed.

The Master HV includes many safety features as a standard, to ensure a safe and reliable battery installation:

▶ Double Safety Contactor
▶ High Voltage Interlock Loop
▶ Integrated Pre-Charge Circuit

Master HV HVIL

Interlock Loop

The built-in high voltage interlock loop (HVIL) keeps the battery system operable, as long as the loop is closed. The main contactors open without intervention of the software. All power-, I/O- and CAN-Bus connectors of the Master HV are included in the high voltage interlock loop as a standard.

EMS / PMS

The integrated EMS sends and receives information to and from a PMS*, for monitoring and control of your energy storage system. The available protocols are NMEA2000 and J1939 (compatible). This includes the following functions:

▶ PLC CAN-Bus control Start/Stop/Reset
▶ BMS limits for chargers/inverters available
▶ Heartbeat mechanism protocol

Master HV EMS PMS
Pre-Charge Master HV

Pre-charge Circuit

The integrated pre-charge circuit measures the voltage level of the battery string towards the load. Moreover, it makes sure the voltage level of the load and battery string reach a safe window, before closing the safety contactors. Therefore it prevents the safety contactor from welding and/or damage of load connected equipment.

*PMS not supplied by MG

Master HV HVIL

Interlock Loop

The built-in high voltage interlock loop (HVIL) keeps the battery system operable, as long as the loop is closed. The main contactors open without intervention of the software. All power-, I/O- and CAN-Bus connectors of the Master HV are included in the high voltage interlock loop as a standard.

EMS / PMS

The integrated EMS sends and receives information to and from a PMS*, for monitoring and control of your energy storage system. The available protocols are NMEA2000 and J1939 (compatible). This includes the following functions:

▶ PLC CAN-Bus control Start/Stop/Reset
▶ BMS limits for chargers/inverters available
▶ Heartbeat mechanism protocol

Master HV EMS PMS
Pre-Charge Master HV

Pre-Charge Circuit

The integrated pre-charge circuit measures the voltage level of the battery string towards the load. Moreover, it makes sure the voltage level of the load and battery string reach a safe window, before closing the safety contactors. Therefore it prevents the safety contactor from welding and/or damage of load connected equipment.

*PMS not supplied by MG

Product Features

Product_Features_Master_HV

Pre-charge circuit

Pre-charging increases the lifespan of electronic components and the reliability of the system.
During the power-up procedure, the inrush current is limited to protect system components from damage.

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Current Sensor

The current sensor measures the current from and to the batteries. This gives insight into the actual current when charging or discharging the connected batteries. Additionally, the current sensor keeps track of the State-Of-Charge and protects the battery bank when there is an excessive charging current.

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Safety Contactor

In order to guarantee a safe operation of the system, a safety contactor is integrated which can disconnect the batteries from the chargers and loads. This is a second layer of protection.

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Status LED

The Status LEDs indicate the state of the system.

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Power Connectors

There are two models of the MG Master HV, the 300 A and 500 A. The only difference between the two models are the power connectors. This means that they differ in the maximum allowable current.

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Diagnostic port

6 of 9

BMS CAN

7 of 9

Aux. CAN

8 of 9

I/O connector

9 of 9
Master HV Product Features

Pre-charge circuit

Pre-charging increases the lifespan of electronic components and the reliability of the system.
During the power-up procedure, the inrush current is limited to protect system components from damage.

1 of 9

Current Sensor

The current sensor measures the current from and to the batteries. This gives insight into the actual current when charging or discharging the connected batteries. Additionally, the current sensor keeps track of the State-Of-Charge and protects the battery bank when there is an excessive charging current.

2 of 9

Safety Contactor

In order to guarantee a safe operation of the system, a safety contactor is integrated which can disconnect the batteries from the chargers and loads. This is a second layer of protection.

3 of 9

Status LED

The Status LED’s indicate the state of the system.

4 of 9

Power Connectors

There are two models of the MG Master HV, the 300 A and 500 A. The only difference between the two models are the power connectors. This means that they differ in the maximum allowable current.

5 of 9

Diagnostic port

6 of 9

BMS CAN

7 of 9

Aux. CAN

8 of 9

I/O connector

9 of 9

Product Features

System Schematics

High Voltage

Redundant

These schematics are examples and not meant for installation purposes. The information is carefully checked and is considered to be reliable, however MG Energy Systems assumes no responsibility for any inaccuracies

System Schematics

High Voltage

ESS

Redundant

Technical Specifications

Master HV 300A

MGMHV800300
300 A

Supply voltage 24 Vdc (18 Vdc to 32 Vdc)
Supply current 2,5 A
Maximum HV voltage 900 Vdc
Maximum HV current continuous 300 A
Weight 9,9 kg
Supply voltage24 VDC
 (18 VDC to 32 VDC)
Supply current2,5 A
Maximum HV voltage900 VDC
Maximum HV current continuous300 A
Weight9,9 kg
Dimensions (lxwxh)430x329x121 mm
Features 
FuseExternal fuse needs to be added
Integrated main contactors2x contactor (in positive and negative HV line)
Integrated pre-charge circuitYes
Event loggingInternal event logging memory
Input/Output 
Emergency switch connectionYes
Allow-to-charge (relay output)Max. 30 VDC fused 1,5 A
Allow-to-discharge (relay output)Max. 30 VDC fused 1,5 A
Programmable output (relay output)Max. 30 VDC fused 1,5 A
Digital input 124 VDC, 5 mA
Digital input 224 VDC, 5 mA
Digital input 324 VDC, 5 mA
Environmental 
Operating temp. charge-20 to +50 °C
HumidityMax. 95% (non-condensing)
IP-Protection classIP 65
Connections 
Power connectionsAmphenol PowerLok 300 series
CAN-Bus connection (batteries)2x M12
CAN-Bus connection (aux.)2x M12
Diagnostic port (CAN-Bus)1x M12
Standards 
EMC: EmissionCISPR 16-2-1:2014, CISPR 16-2-3+A1+A2:2010
EMC: ImmunityIEC 60533:2015, IEC 61000-4-2:2008, IEC 61000-4-3+A1+A2, IEC 61000-4-4:2012, IEC 61000-4-5:2014, IEC 61000-4-6:2013
ApprovalsDNV-GL, Lloyds, IEC-EN62619
Master HV 500A

MGMHV800500
500 A

Supply voltage 24 Vdc (18 Vdc to 32 Vdc)
Supply current 2,5 A
Maximum HV voltage 900 Vdc
Maximum HV current continuous 500 A
Weight 9,9 kg
Supply voltage24 VDC
 (18 VDC to 32 VDC)
Supply current2,5 A
Maximum HV voltage900 VDC
Maximum HV current continuous500 A
Weight9,9 kg
Dimensions (lxwxh)430x329x121 mm
Features 
FuseExternal fuse needs to be added
Integrated main contactors2x contactor (in positive and negative HV line)
Integrated pre-charge circuitYes
Event loggingInternal event logging memory
Input/Output 
Emergency switch connectionYes
Allow-to-charge (relay output)Max. 30 VDC fused 1,5 A
Allow-to-discharge (relay output)Max. 30 VDC fused 1,5 A
Programmable output (relay output)Max. 30 VDC fused 1,5 A
Digital input 124 VDC, 5 mA
Digital input 224 VDC, 5 mA
Digital input 324 VDC, 5 mA
Environmental 
Operating temp. charge-20 to +50 °C
HumidityMax. 95% (non-condensing)
IP-Protection classIP 65
Connections 
Power connectionsAmphenol PowerLok 500 series
CAN-Bus connection (batteries)2x M12
CAN-Bus connection (aux.)2x M12
Diagnostic port (CAN-Bus)1x M12
Standards 
EMC: EmissionCISPR 16-2-1:2014, CISPR 16-2-3+A1+A2:2010
EMC: ImmunityIEC 60533:2015, IEC 61000-4-2:2008, IEC 61000-4-3+A1+A2, IEC 61000-4-4:2012, IEC 61000-4-5:2014, IEC 61000-4-6:2013
ApprovalsDNV-GL, Lloyds, IEC-EN62619

These technical specifications are subject to changes without notification. All rights reserved.
The information in this datasheet is carefully checked and is
 considered to be reliable, however MG Energy Systems assumes no responsibility for any inaccuracies

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