Installing Zaptec Sense HAN

This guide walks you through the installation process for Zaptec Sense on sites with a HAN port (RJ45). If the site doesn't have a smart meter, no problem! Check out our guide for installations without smart meter here.

Installing Zaptec Sense

• Package content: In your package, you'll find a Zaptec Sense, a communication cable, and two types of suspension.
• Activate HAN port: By default, the HAN port on your energy meter might be deactivated. Please contact your electricity provider to activate it before proceeding with the installation of Zaptec Sense.

Installation steps:

1. Plug Zaptec Sense into the energy meters HAN port using the included communication cable. Wait for at least 3 minutes for the device to boot up. Proceed to the next step when the Zaptec Sense starts blinking orange.
2. Download the Zaptec app from App Store or Google Play and create/login to your account.

3. Access the Dashboard screen, tap the three dots in the corner and select Install Product.

4. Scan the QR- code on the back of the Zaptec Sense or user manual.

5. Follow the on-screen instructions, including setting the main fuse, confirming connection to the e-meter, and connecting to a network.

6. Pair your Zaptec Sense with your installation. If you have not created an installation, press
   Pair with a charger and add the serial number.

7. Once the light indicator on Zaptec Sense changes to continuous white, the installation is complete. The unit will now be added to your active add-on services in the app.

After-setup configuration

After installation, adjust settings needed for optimal performance:

• Network Settings: If you need to change network settings after installation, hold your phone near Zaptec Sense, open the Zaptec app, and navigate to the configuration options.
• Network requirements: Zaptec Sense HAN supports WiFi 2,4GHz and does not have an Ethernet port. 
• Settings: Access different settings under Installation, Zaptec Services, and Zaptec Sense, including Network Status, IP Address, Phase Rotation, and Meter Type.

Disable Zaptec Sense

If the need arises to disable Zaptec Sense, follow these simple steps:

1. Navigate to Zaptec Services under Installations.
2. Toggle the switch to disable Zaptec Sense.
3. Adjust the maximum charging current following installation capacity.
4. Tap Save.

Light indicator 

HAN port already in use?

Use a Y-splitter with an external power supply if the HAN port is already in use. Allowing you to connect multiple devices to the same port on the AMS. Zaptec Sense has an input for micro USB ( HUNN connection) so that it is easy to use a normal micro USB cable (HANN connection), e.g., a phone charger 5VDC with Micro USB-B connector.

Scaling factor 

The scaling factor is the variance between the primary and the secondary side of the measurement transformer (måletrafo). Some AMS sensors require a scaling factor to be applied to measurements to get the correct value. For example: 

• CT turnover ratio 100:5 = Scaling factor 20
• CT turnover ratio 50:1 = Scaling factor 50

For the correct scaling factor, refer to the AMS documentation provided by the manufacturer. 

• Directly measured AMS (Up to 50A): In most cases in detached houses, the AMS electricity meter is directly measured with a CT turnover ratio of 1:1, which means the measured electricity is the same value as that sent out on the HAN port. If this ratio is not 1:1, the reading from the HAN port will not be correct, and it must be corrected with a scaling factor that is entered in power management for APM in Zaptec Portal.
• Indirectly measured AMS current meters (From 50A): For indirectly measured AMS (> 63A Main fuse) or if there are different ratio data values output on the HAN port on the AMS current meter than measured, a scaling factor must be applied under Power management in the portal to correct the CT turnover ratio.
  
  

AMS smart meters

Various manufacturers provide AMS power meters, such as Kamstrup, Kaifa/Nuri, and Aidon. This choice of meter can differ based on location and grid company. In Norway, all grid companies are required to facilitate installation and provide access to the metering data, often via the HAN-port (Home Area Network). For detailed information, visit the NEK website.

Different smart meters have certain specifications and requirements. If you set up Zaptec Sense and don't get the correct readings it may be due to the e-meter type. Ensure compatibility by referring to manufacturer documentation for accurate installation guidance.

• Kamstrup: Kamstrup meters require an external power supply through the micro-USB input. Regular phone charger 5VDC with Micro USB-B connector can be used. If connected without this supply, you may experience that the Zaptec Sense restarts every other minute. This is because the HAN port on Kamstrup AMS current meters does not deliver sufficient current. While Kamstrup meters lack a built-in HAN module, it's likely installed during the smart meter upgrade or can be sent to you by mail at no cost. The HAN module is a transition to the RJ45 connector, commonly used by third-party suppliers to connect to the meter.
  
  
• Kaifa/Nuri: Nuris meters typically feature a built-in HAN module, which means you will only have to activate the HAN port and all equipment can be connected directly to the meter behind the small cover on the left. Activating the HAN port enables direct connection of all equipment to the meter. However, note that Kaifa model MA304T3 lacks L2 measurement capabilities, as indicated in its specifications. This type of AMS with external current measurement is less used in private homes.
  
  
• Aidon: Aidon AMS for IT3-phase doesn't provide L2 measurement. On this AMS the Zaptec Sense estimates the value based on power, L1, and L3 currents. While generally accurate, occasional overestimations may occur. Most AMS types provide current measurements on all three phases. We are currently looking into whether this is something we can fix remotely through FW on Zaptec Sense. 
  Alternatively, the installer could rewire from 3-phase to 1-phase. However, it's crucial to ensure that the wiring aligns precisely, with phase 1 and 3 on the AMS corresponding to N and L1 on the charger. Additionally, adjustments must be made in the app to reconfigure the charger to report the grid type as IT1phase and indicate the phase pair as 1/3.