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

Case study on Power Quality Solution at a textile industry with High Voltage Harmonics

Published: Mar 11, 2026 | Updated: Apr 08, 2026

Technical Articles

Introduction:

In textile mill, electricity consumption is in increasing trend, due to modernized machines and continuous usage of the equipment. After a lot of technological development globally, mills are now using power electronic driven equipment to run motors in processes like fibre production, dyeing, printing. These devises are efficient in operation as compared to old control mechanisms, but the only drawback is harmonics generated by these devices which effect the entire industry equipment if proper mitigation is not done.

For further knowledge on Voltage Harmonics & Current Harmonics, please refer Issue: 37

Background

Rameshwar Udyog is a textile industry located in Ahmedabad which manufactures a variety of fabrics and is one of the leading exporters in our country. This case study presents the impact of High Voltage Harmonics of Textile industry where major part of load is drives (6 pulse AC & DC drives).

Problem

Once the APFC panel is switched ON, harmonic levels recorded at main incomer level at LT side are rising as high as I-THD: 84.8% and V-THD: 13.5% resulting in failure of Drive’s PCB cards & Tripping of SCPDs.

Detuned reactors were not installed in APFC panel to avoid overheating & burning due to high V-THD%. Moreover, customer was facing penalties by Electricity Board for maintaining poor power factor.

Power quality study

A detailed power quality study has been conducted in the industry which revealed the following data:

Capacitor feeders were carrying almost 50% more than the rated current, due to low impedance & resonance, in the high VTHD system. High Voltage and Current harmonic levels are also reason for very low True PF. But these high harmonic levels can be brought down if harmonic amplification by capacitors is controlled effectively.

Level 1 solution – High V-THD reactors

Based on the readings obtained from the Power Quality study, customer installed capacitor duty contactor switched 350 kVAr APFC Panel with LK’s High V-THD reactors and 525 V LTXL Ultra Heavy Duty capacitors

The performance of high V-THD reactors can be understood by below mentioned observations:

After installing High V-THD reactors, they achieved a good PF with low heat generation and avoided PF penalty. Current and voltage harmonic levels came down effectively by restricting the harmonic amplification. The reactors are also working satisfactorily at normal temperature.

Level 2 solution - Active harmonic filter

To mitigate the existing harmonics below IEEE 519 limits and to fine tune PF close to unity, Active Harmonic Filter was to be installed. Accordingly, 300 amperes Active Harmonic Filter was installed. The performance with the combination of AHF and high-VTHD reactors are given below:

After installing Active Harmonic Filter, close to unity PF is achieved and current harmonic levels brought down to 5%. V-THD at the incomer came down to 7.2% and cannot be decreased further as there is grid distortion.

Also Read: Power Quality Solution at Printing press with HV Harmonics

Conclusion:

In the above case, after installing high VTHD reactors + capacitor combination we could achieve close to Unity PF in high Voltage Harmonics system. This also resulted in reducing the size and cost of Active Harmonic Filter, without these reactors, customer would have installed AHF with rating 2 times the existing rating (300 A).

Along with installing the electrical equipment (trending/old) in any industry, one should also understand its performance - impact on other equipment in industry and install suitable devices to monitor and control its ill effects for an efficient and cost-effective working of industry. Indian electrical industry has been compromising on solutions for good power quality in industries with high Voltage harmonics. Addressing the same with specially modified High V-THD reactors is one such step to gain significant benefits.