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

Ready To Close (RTC) Indication

Updated: Aug 31, 2026 | 6 min read

Technical Articles

Published: Mar 06, 2026 by Sourav Dasmodak

Technical Articles

01 What are Modular Switches

02 What is Smart Switch

03 How Does a Modular Switch Work

04 How Does a Smart Switch Work

05 How to Use Modular Switches

06 How to Use Smart Switches

07 Smart Vs Modular Switches

13 What are Electrical Protection Devices

14 Types of Electrical Protection Devices

15 Role of Electrical Protection Devices in Decreasing Downtime

16 Best Practices for Electrical Protection

17 What is an Earth Fault Relay

18 Types of Earth Fault Relays

19 How Earth Fault Relay Works

20 Earth Fault Relay Function

21 Role of Earth Fault Relay in Improving Electrical System Protection

22 Application of Earth Fault Relay

23 RMU Full Form in Electrical Systems

24 What Is Ring Main Unit and Why Is It Important?

25 Ring Main Unit Function in Distribution Networks

26 Ring Main Unit Working Principle Explained Simply

27 How Does a Ring Main Unit Handle Fault Conditions?

28 Types of RMU Used in Electrical Systems

29 Ring Main Unit Application Across Industries

30 Use of Ring Main Unit in Industrial Facilities

31 RMU Electrical Design Advantages

32 RMU Installation Considerations

33 Ring Main Unit Function During Maintenance

34 How RMUs Improve Distribution Reliability

36 FAQs About Ring Main Units (RMUs) Explained

37 What is Preventive Maintenance in Electrical?

38 Types of Electrical Preventive Maintenance

39 Electrical Preventive Maintenance Checklist

40 FAQ About Preventive Maintenance

41 What is an Overcurrent Relay 

42 Types of Overcurrent Relays

43 Overcurrent Relay Working Principle

44 Applications of an Overcurrent Relay

45 How to Set an Overcurrent Relay

46 FAQs Overcurrent Relay 

47 What is Distribution Board

48 Distribution Board Components

49 Function of Distribution Board

50 Use of Distribution Board

51 Types of Distribution Board

52 MFM Full Form in Electrical Terminology

53 What Is a Multifunction Meter?

54 Why Multifunction Meters Are Important in Modern Electrical Systems

55 Multifunction Meter Working Principle Explained

56 How Does Multifunction Meter Work?

57 Measurement Capabilities of a Multifunction Meter

58 Multi-Function Panel Meter and Its Role

59 Key Advantages of Multifunction Meters

60 Multifunction Meter Working Principle and Data Accuracy

61 Communication Features in Multifunction Meters

62 Typical Applications of Multifunction Meters

63 Installation Considerations for Multifunction Meters

64 Common Misconceptions About Multifunction Meters

65 Maintenance and Reliability Aspects

66 FAQs About Multifunction Meters Guide

67 1. Temperature Rise

68 2. Causes of Temperature Rise

69 3. Effects of Overheating at Breaker Terminals/ Bus-Bars

70 4. Temperature Module (TM)

71 5. Connection of Temperature Module

72 6. Configuration of Temperature Module

74 Comparative Analysis Using Finite Element Method (FEM)

76 Applications of Double Deck Busbar Systems

78 The Core Components: AC Drives and Soft Starters

79 Fire-Fighting Pumps

80 Smoke Extraction Fans

83 Brief Description

85 What is Star Delta Starter?

86 How Does a Star Delta Starter Work?

87 Types of Star Delta Starter

88 Application of Star Delta Starter

89 How to Connect Star Delta Starter?

90 Benefits of Busbar Trunking System

91 Advantages and Disadvantages of Star Delta Starter

92 Disadvantages of Star Delta Starter

93 Where Star Delta Starter is Used?

94 FAQs About Star Delta Starter Guide

95 What Is VFD in Electrical Systems?

96 How Does a VFD Work?

97 VFD Working Principle Explained Simply

98 Why VFD Drives Are Widely Used Today

99 Types of VFD Commonly Used

100 VFD Components and Their Roles

101 Advantages of Variable Frequency Drive

102 Variable Frequency Drive Installation Considerations

103 VFD Drives and Motor Protection

104 VFD Maintenance Checklist Basics

105 Why VFD Maintenance Is Often Overlooked

106 Final Perspective

107 FAQs About Understanding Variable Frequency Drives

Click on any topic to jump to that section

RTC takes into account all the safety parameters that are part of the control & monitoring system of electrical installation. OMEGA RTC allows the circuit breaker to close only if following conditions are met:

Main spring is charged.
Circuit Breaker is OFF.
Shunt release is de-energized.
Under-Voltage release is energized.
All Arc-chutes are properly placed.
Mechanical trip indication lever on release is reset.
Racking shutter is closed.

Benefit

It acts as an inherent safety feature. RTC ensures safe switching ON of ACB and eases the diagnosis in case all the conditions for closing the ACB are not met.

Working Principle

Circuit breakers have a mechanism for performing the ON and OFF operation. The position in which the Main contacts are in “Closed” condition is called the ON position while the position in which Main contacts are in “Open” condition is called OFF position.

The mechanism used is stored energy type wherein the energy stored in a spring is used for closing operation. This spring is called the “Main spring” or “Closing Spring”. The spring in “charged condition” is held by a Closing latch. Upon release of this closing latch, the spring energy gets released and is used for turning ON the Circuit Breaker.

Similarly, for turning OFF the Circuit breaker, a spring known as “Opening spring” or “Return spring” is used. This spring is charged when the circuit breaker is turned ON. The energy stored in this spring is used for opening operation.

Hence, for closing operation (ON), it is necessary that the “Main spring” or “Closing spring” should be “charged”.

Apart from charged condition of main spring, other conditions required to be fulfilled for making the breaker ON are:

Racking shutter should be closed
Rated supply should be given to Under Voltage release
Arc chutes should be mounted properly
Flux Shift Device should be in reset condition (Mechanical trip Indication Lever on Release is reset)
No signal from mechanical interlock, if breaker is mechanically interlocked
Breaker should be OFF

After fulfillment of all above conditions, the breaker is said to be “Ready to Close”. The above conditions can also be called “interlocks”.

Electrical Indication of RTC Micro-switch

For electrical indication of “Ready to Close” condition a micro switch (Normally Open or NO/Normally Closed or NC contacts) is used.

After fulfillment of above mentioned conditions for “Ready to Close”, a lever gets actuated and in-turn changeover of the micro switch occurs (NO contacts get closed and NC contacts get opened).

RTC Indication Wiring

Electrical Indication for RTC can be taken from Breaker SIC 101,102 and 104.

101 – Common

102 – NC

104 – NO

Mounting of RTC Micro-switch

Following are the steps for mounting RTC micro switch on Omega ACB:

Open the Breaker Front Facia while the breaker is in OFF condition and spring in discharged position. Facia can be easily removed only in fully drawn out (Maintenance) position, which ensures safety of users and equipment.
Route the RTC wires through the bottom of the top plate assembly. (Ensure that the routing of wires does not interfere with mechanism operating components)
Fix the RTC micro switch on the holes provided on the right side plate of the mechanism as shown below.
After mounting the breaker SIC on 101,102 and 104, connect the RTC wires to the SIC.

Proper assembly may be verified by checking for the changeover from one set of contacts to the other on completion of charging of the breaker. All requisite conditions should be satisfied for status changeover of the micro switch.

About the Author

Sourav Dasmodak,

Product Management & Marketing (Powergear - ACB)

Product Owner of Air Circuit Breaker (ACB) of Lauritz Knudsen for Domestic & International Market. I can talk to you about Electrical Products' Sales, Business Development, Market Expansion, Cracking Critical Strategic Account, handling Key Account & of course how to develop & motivate Channels along with the organizational growth. Having near about one and a half decade of experience across the country with major electrical manufacturers (Top 4).