Unable to Recharge the prepaid meter

Solution: Connectivity Check: Confirm the meter is successfully communicating with the server. Serial Number Verification (SmartComm): Access the SmartComm Customer Master and ensure the serial number recorded matches the physical serial number of the connected meter. Duplicate Configuration Check: Verify that no two meters are incorrectly configured with the exact same serial number in the system.

Email Configuration SMTP Details Outlook

Solution: SMTP Host/Server Name: For Outlook.com: smtp-mail.outlook.com For Office 365/Microsoft 365: smtp.office365.com SMTP Port:587 (recommended) Encryption Method: STARTTLS Authentication: Your email account needs to be authenticated, so enable login or use the ""My outgoing server (SMTP) requires authentication"" option in your email client. Username: Your full Outlook email address (e.g., yourname@outlook.com or yourname@domain.com) Password: Blank

Email Configuration App Password creation for Gmail account

Reason - Gmail will work only with a secure encrypted app password Solution: Go to your Google Account settings. Navigate to the Security tab. If you don't have it enabled, turn on Two-Step Verification. Find and click on App passwords. Select an app name (like ""SMTP"" or ""Mail Client"") and click Generate. Copy the generated 16-character password and use it in your mail client's password field instead of your main Gmail password.

Email Configuration SMTP Details Gmail

Solution: Gmail SMTP Settings SMTP Server: smtp.gmail.com Port: 587: (requires STARTTLS/TLS) 465: (requires SSL) Authentication: Required Username: Your full Gmail address (e.g., user@gmail.com) Password: An App Password generated from your Google Account security settings Security/Connection: TLS or SSL, depending on the port chosen

Transfer existing sensor to a different gateway

Reason - Loss of old data stored under device id created Solution: To prevent data loss, edit the sensor and use the "Move to Gateway" option to transfer the sensor to a different gateway.

Asset list is not available in the filter

Reason - The asset is not assigned to the organization Solution: Check the asset selection settings in organization settings

Reason - Sensor/gateway limit exceeded Solution: Check license information for sensor/gateway limit

Cannot change the ip address of gateway

Reason - The ip address should is not available Solution: 1. if company network is being used check the accesibility to access 2. check if set ip is with in subnet range 3. Check if Primary and Secondary DNS is correct as per network settings 4. Set the Default Gateway IP to match the router's IP or the company network's default gateway IP.

3rd part meter not communication

Reason - 1. Memory map configuration wrong 2. (10 power -4 )Conversion factor is not available in third party memory map configuration 3. Data on modscan and software is matching but not matching with meter display readings Solution: 1. Verify data via Modscan, check wiring, confirm the meter parameter's datatype/function code in the memory map, and ensure the gateway supports that parameter datatype. 2. Can be added from conversion factor available in Master settings

Could not download certificate

Reason - All mandatory fields are not saved in organisation info settings Solution: All details should be given in mandatory field of organisation settings

Understanding SPD Terminologies

Published: Mar 11, 2026 | Updated: Apr 10, 2026

Technical Articles

Surge Protection Devices are defined by various electrical specifications, Understanding these specifications will help the user to select the right surge protection device specific to their installation/application.

Un - Nominal Operating Voltage

The nominal voltage stated for a SPD corresponds to the system voltage of the typical SPD installation site, e.g. 230/400V AC

Uc -Maximum Operating Voltage

Maximum r.m.s value of the voltage which is allowed to be continuously applied to the terminals of SPD in the event of surge
Once voltage across SPD terminals will go above this value, SPD will change its state from open circuit to closed circuit mode.
Uc value must always be equal to or higher than Un rating.

Imax- Maximum Discharge Current

Imax is the term associated with Type-2 SPD. It is the Peak current of 8/20μs wave shape a surge protector can withstand without destruction.
IEC 61643- I standard (Standard for low voltage surge protective devices) has defined below 8/20μs current waveform to simulate switching surges/surges due to indirect lightning strikes.

Iimp - Maximum Lightning Surge Current

Iimp is the term associated with Type-1 SPD. It is the Peak current of 10/350μs waveform a surge protector can withstand without destruction.
IEC 61643-I standard (Standard for low voltage surge protective devices) has defined below 10/350μs current waveform to simulate direct lightning strikes.

Note: Type 1+2 SPD gives combined protection of Type 1 and Type 2 SPD (Protection against Direct/Indirect lightning strikes) . Hence, for Type 1+2 SPD, Iimp and Imax both the terms get associated

U_P –Voltage Level of Protection

It is the Maximum voltage that can occur across the connection terminals of a SPD.
In the event of surge, when surge current and surge voltage are within the performance parameters of the SPD, the voltage is safely limited to a maximum of this value across the terminals of the SPD.
Up value must be lower than load’s U_imp (Load’s impulse withstand voltage)

In - Nominal Discharge Current

The nominal discharge current (In) is the peak current in 8/20μs wave shape a surge protector can withstand repeatedly (15 surges) without destruction.
In value is always less than Imax value of SPD

U_T-Temporary overvoltage

The temporary overvoltage U_T (TOV) is the maximum r.m.s. value, the surge Protector can withstand for several Seconds, without failure. In SPD, U_T is typically equal to or higher than U_C.

I_SCCR - Short Circuit withstand capacity

I_SCCR indicates the maximum prospective short-circuit current of the electrical network in which SPD is getting connected in conjunction with the upstream overcurrent protective device. Prospective short-circuit current is the highest electric current which can exists in a particular electrical system under short-circuit condition.

I_SCCR of SPD needs to be higher than the short circuit value of the network of at SPD’s installation point.