myenergi LIBBI-C110W Fish Zappies Eddie Harvey Hub Instructions

myenergi LIBBI-C110W Fish Zappies Eddie Harvey Hub

Overview

As customers are becoming increasingly aware of environmental issues and are seeking to install low-carbon technology devices, such as heat pumps, electric vehicle charging points and photovoltaic generation within their premises that might add significant load and/or generation (including electricity storage) onto Distribution Networks. Where the Distribution Network Operator (DNO) has assessed that connection of such devices will require costly reinforcement, or reinforcement that would take time to implement thus delaying the connection, some customers may choose to restrict the net flows of electricity at their connection point rather than wait for, or contribute to, the reinforcement.
A typical Customer Limitation Scheme (CLS) may be used in the following scenarios:

• Installing generation with an aggregate current rating greater than the permitted export to the network and limiting the peak export;
• Connecting significant new loads that cannot operate at their full capacities at the same time without exceeding the import capacity from the network;
• Using the flexibility of the customer’s loads and generation to stay within import or export limits.

For installations within England, Scotland, and Wales, the Implementation of Engineering Recommendation G100 issue 21 became mandatory for systems commissioned from 1st May 2023.

The energy CLS

The energy ecosystem CLS is registered on the ENA Type Test Register under MYENE/09150/V1, link to ENA TTR https://www.ena-eng.org/gen- ttr/index?Action=Home. The following products installed in accordance with this guide document and G100 Issue 2 installation methods, provide the functionality and safeguards to protect the DNO supply.

• libbi
• Zappa
• Eddi
• have
• hub

For compliant models and firmware versions, refer to section 4.

How it works

Once the CLS is set correctly, the master device within the Myenergi eco- system will monitor the maximum import and export and if necessary, instruct other devices to increase or decrease import or export if these maximum thresholds are ever exceeded. All devices pass secure status messages to other energy-connected devices.
According to G100 Issue 2, there are four operating states:

• State 1 – This is normal operation, and all devices will normally operate under this state.
• State 2 – When the maximum import or export threshold is exceeded, then one or more devices enter State 2. If state 2 persists for more than 15 seconds, then the CLS records an excursion. A well-designed and commissioned system should never enter this state.
• State 3 – This state stops normal functionality and devices will reduce their active power imported/exported to zero. In the following situations, the CLS will enter state 3.
  • If the CLS exceeds the Minimum Import Limitation (MIL) or Minimum Export Limitation (MEL) thresholds for greater than 60 seconds,
  • If the CLS exceeds the MIL or MEL thresholds for more than 15 seconds but less than 60 seconds, three times in a 24-hour period,
  • The time between any two 15 seconds or more, consecutive breaches of the MIL or MEL, within a 10-minute window.
  • If the measured grid current exceeds the state 3 thresholds.

Lockout – If the CLS has entered state 3 more than three times, then the CLS is locked out and normal operation of the devices is not permitted. Unfortunately, a lockout of a CLS usually means there is either a fault present within a system or that the CLS has not been set up correctly. Unlocking of the CLS can only take place by the installer or energy Technical Support.

The installer is responsible for the installation and proper commissioning of each installation; therefore, they must ensure that house import and export has been accurately calculated. Failure to do so will result in improper operation of the CLS.

The following block diagram represents a typical energy CLS.

My energy products incorporate robust functions to measure, analyze, control, and monitor a customer’s installation under G100/2, through the master device. Except for when using the harvi, the hardwired CT must be connected to the master device under a CLS. All intra-device communications are either via hardwired Ethernet, WiFi, and/or local radio comms.

Compliant products

The following models, only, are compliant with G100 issue 2. The G100 master device of a CLS must be the device with the grid CT connected or, where a harvi is used for the grid CT, the device that is paired directly with the harvi.

For models that are not classed as a G100 master device, these must only be configured as a slave devices for controlling its own load.

Device Behaviour with Respect to the Current

The following table details the operating states at different current thresholds for the G100 master product models and harvi, detailed in section 4.

Typical Installation Diagrams

The following are two typical examples for a myenergi CLS set up.

The dotted line in the example above indicates that the G100 grid CT can be wired to any one of the myenergi devices4

Where to Find the Device Manuals.

Please refer to the relevant product manuals for further guidance by using the following link www.myenergi.com/installers-center/download- center, or by scanning the QR Code below.

Commissioning

Before configuring the CLS, please ensure that the firmware versions on each device meet the minimum requirements, in accordance with table 1. To configure a CLS follow the setup wizards on each myenergi device, ensuring that;

1. The region is set to the UK.
2. Confirm that G100/2 is required.
3. Set an export limit to 16A, 22A, 32A, 60A or 100A (per phase values).
4. Set import limit to 60A, 80A, or 100A (per phase values).
5. Follow the prompts to set the passcode. Once all settings have been entered correctly, the installer must change the passcode for the advanced menu.

In accordance with G100/2, the new passcode must not be shared with the customer, as changing advanced settings within my energy devices may inhibit the CLS from proper operation, and failure to follow this advice may result in adverse or even dangerous operations.

Commissioning Tests and DNO Witness Tests
DNOs will not routinely witness the commissioning tests however, it is important that the commissioning tests required by G100 are completed and a copy of the test results is provided to the customer.

The commissioning test actions shall be carried out in the following order:

1. Implement measures to ensure that the MEL or MIL cannot be exceeded.
2. Perform Fail Safe tests, in accordance to section 8.2
3. Verify export and import limits are correct, reconfigure if necessary.

Fail-Safe Tests
Fail-safe tests must be carried out by the installer on commissioning, in accordance with section 5.5 of EREC G100/2. We have provided guidance on how to carry this out, together with a form within Appendix A. This should be completed by the installer and a copy given to the customer.

Fault Message and Counters
The following messages will be presented on the G100 master device, on detecting an excursion into state 3.

When a user reset is required

• G100 Limit Exceeded
• Resets remaining #
• Hold (+) to continue

When an installer or manufacturer’s reset is required

• G100 Limit Exceeded
• Device Locked Out
• Contact Energy

Clear State 2 and 3 Counters.
To ensure that the customer is left with a fully operational CLS, the state 2 and 3 counters shall be cleared from the master device. To do this enter the advanced menu with the new passcode, and navigate to Supply Grid > Device > reset G100 counters.

In accordance with G100/2, the new passcode must not be shared with the customer, as changing advanced settings within myenergi devices may inhibit the CLS from proper operation, and failure to follow this advice may result in adverse or even dangerous operations.

User Reset

A local reset of the CLS will be necessary, under the following conditions.

• If the CLS exceeds the MIL or MEL thresholds for greater than 60 seconds,
• If the CLS exceeds the MIL or MEL thresholds for more than 15 seconds but less than 60 seconds, three times in a 24 hour period;
• the time between any two consecutive breaches of the MIL or MEL, for 15 seconds or more, within a 10 minute window.
• If the measured grid current exceeds the state 3 thresholds.

Under these conditions, all connected devices will reduce their active power imported/exported to zero.
It is advisable for the customer to take note of any fault code presented on the master device, before considering if action must be taken, then a reset of the CLS is made by holding the menu button for 3 seconds. The CLS will only permit a reset if the grid current being measured is below the MIL or MEL thresholds, after which normal operation will be allowed.

Manufacturer’s Lockout

If the CLS has been reset more than 3 times within a rolling 30-day period, then the system will be locked out and normal operation of the devices is not permitted. This is a requirement of G100 issue 2 and is aimed at highlighting a potential fault on the customer’s local supply and/or with the load or export equipment at the customer’s premises. Lockout could also be due to incorrect setup.

A warning screen highlighting this will be presented on the master device and will affect all paired devices.

The Myenergi app, also shows the following warning each time you access it. To unlock the CLS, the installer must visit the customer premises and review the system and may unlock the system by clearing the counters, as detailed in section 9.3, else the customer will need to contact Myenergi technical support, for further instructions and for remote unlocking of their CLS.

Factors to consider before a manufacturer reset can be made.

• Are the reasons for the lockout fully understood and been addressed?
• Is an installer site visit necessary to conduct additional assessment or testing?

Technical Support

If you experience any issues during or post installation, please contact our technical support team by clicking this link; www.myenergi.com/support- centre or scanning the QR Code below.

Appendix A

www.myenergi.com

myenergi Ltd. Pioneer Business Park, Faraday Way, Stallingborough, Grimsby, DN41 8FF, UK

Published October 2023
United Kingdom
TD-00004
myenergi.com

References

• Renewable energy products making eco energy easy | myenergi
• Renewable energy products making eco energy easy | myenergi
• Download centre | myenergi GB
• Support Centre | myenergi GB
• ENA Type Test Register
• ENA Type Test Register

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