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

Power Supply Module

Updated: Aug 31, 2026 | 6 min read

Technical Articles

Published: Mar 06, 2026 by Sourav Dasmodak

Technical Articles

Click on any topic to jump to that section

Optimized use of Power Supply (PS) Module

All versions of Omega Air Circuit Breakers with MATRIX releases are self- powered. Display (O-LED type) is a standard feature in MATRIX Protection & Control (P&C) Units (MTX-1.5G Onwards) and it needs 10% of I-frame value to Power-Up through CTs.

If an auxiliary power source of 24Vdc (thru PS Module or any controlled supply source) is available, display will get Power-Up at NO-load/OFF condition also in these units (MTX-2.5 onwards).

A. Function of Auxiliary Power supply in MATRIX P&CU

It shall be possible to alter protection settings while ACB is in OFF condition through navigation keys.
If it is desired to see details of Fault/Event History after the ACB has tripped on Fault. However last trip record will be available on display without auxiliary power through Query button in P&C Unit.
To communicate with P&C Unit while ACB is in OFF condition.
For Powering-Up Modules like ZSI, UN-CO, etc.
Necessary to build communication between P&C Unit and external modules like REL, TCS, DIO, AO, TM, EF & REF

Note:-

For point no.1, 2, 3 & 4 it is not necessary to use PS Module available with L&T only. Any continuous source of controlled 24V DC can serve the purpose. (Applicable for versions– MTX2.5/2.5G/3.5/3.5EC/3.5H/4.5)
For point no. 5, PS Module available with L&T is must to hardware each & all external module to get desired features (Applicable in MTX3.5/3.5EC/3.5H/4.5). In this case each MATRIX release needs a PS Module.
Before providing auxiliary power supply to MATRIX P&CU it is necessary to know the VA burden of MATRIX P&C Unit & Modules for the calculation of total VA demand.

B. CONTINUOUS VA BURDEN DETAILS OF SUPPLEMENTARY MODULES

Sr.no.	Supplementary Module	VA
1	ZSI	1
2	DIO	2
3	TM	0.5
4	RELAY	1
5	TCS	1.5
6	ANALOG	2
7	EL	1.1
8	REF	1
9	UN-CO	6

Sr.no.	Supplementary Module	VA
1	ZSI	1
2	DIO	2
3	TM	0.5
4	RELAY	1
5	TCS	1.5
6	ANALOG	2
7	EL	1.1
8	REF	1
9	UN-CO	6

C. VA BURDEN OF COMMUNICATION MODULES IN VARIOUS COMBINATIONS

Sr.no.	Combination of Communication modules		Port 1: 200mA		Port 2: 650mA
Sr.no.	Release	Module	VA	No. of releases	VA	No. of releases
1	UW-MTX3.5/3.5EC + METERING MODULE	MODBUS	3	1	15	5
2		PROFIBUS	4	1	12	3
3		ZIGBEE	3	1	15	5

Sr.no.	Combination of Communication modules		Port 1: 200mA		Port 2: 650mA
Sr.no.	Release	Module	VA	No. of releases	VA	No. of releases
1	UW-MTX3.5/3.5EC + METERING MODULE	MODBUS	3	1	15	5
2		PROFIBUS	4	1	12	3
3		ZIGBEE	3	1	15	5

D. VA BURDEN OF SUPPLEMENTARY MODULES IN VARIOUS COMBINATIONS

Sr.no.	Release	Supplementary Module	VA	No. of Releases	PS port to be used
1	UW-MTX3.5/3.5EC + MODBUS MODULE + METERING MODULE	ZSI	4	1	1 or 2
2		TCS	4.5	1	2
3		TM	3.5	1	1 or 2
4		ZSI+TCS	5.4	1	2
5		ZSI+TM	4.5	1	2
6		ZSI+TCS+TM	6	1	2
7		RELAY	4	1	1 or 2
8		ZSI+RELAY	5	1	2

Sr.no.	Release	Supplementary Module	VA	No. of Releases	PS port to be used
1	UW-MTX3.5/3.5EC + MODBUS MODULE + METERING MODULE	ZSI	4	1	1 or 2
2		TCS	4.5	1	2
3		TM	3.5	1	1 or 2
4		ZSI+TCS	5.4	1	2
5		ZSI+TM	4.5	1	2
6		ZSI+TCS+TM	6	1	2
7		RELAY	4	1	1 or 2
8		ZSI+RELAY	5	1	2

E. Functionality of Power Supply Module

Power Supply Module have 3 sets of auxiliary power output. Set - 2 & 3’s combined VA burden is 15.5VA & Set -1 with an additional VA burden of 4.8VA. So, total output power available from PS Module is 20.3VA.

Note:-

Power output set -2 or 3, has to be loaded first, while connecting P&C Unit & External Modules with Power Supply Module.

Recommended wire for connection of MATRIX release with PS Module through AS+/AS- SIC port in ACB is 24AWG ( 7/0.2).

F. Example

Let us consider a Panel Board having 5 nos. Omega ACBs of different MATRIX P&C Units & auxiliary power has to be supplied through PS Module as there is no auxiliary power (24Vdc) source available:–

Incomer ACB is with MTX3.5EC + ZSI - 1 no.
Outgoing ACBs are with MTX3.5 + Modbus COM + ZSI – 3 nos.

Solution: Total VA requirement of all P&CU & Modules are as follows:

Max VA available through PS module:

O/P set 1: 4.8 VA

O/P set 2: 15.6 VA

P&CU & Modules	Count (Nos.)	Total VA burden
MTX3.5EC	1	3
MTX3.5 + Modbus COM	3	9
ZSI module	4	4
Total		16

P&CU & Modules	Count (Nos.)	Total VA burden
MTX3.5EC	1	3
MTX3.5 + Modbus COM	3	9
ZSI module	4	4
Total		16

Connection

So, using only a single PS Module, the above set up can be powered ON.

However, above PS module quantity selection can vary depending on the location/distance of the modules in the panel as well as the type of module used (refer Point A Note I, II, III)

Incomer ACB		Outgoing ACBs
Device	VA burden	Device	VA burden
MTX3.5EC : 1 No	3 VA	MTX3.5 + COM : 3 Nos	9 VA
ZSI : 1 No	1 VA	ZSI : 3 Nos	3 VA
Total	4 VA	Total	12 VA
Connect to PS module O/P 1		Connect to PS module O/P 2

Incomer ACB		Outgoing ACBs
Device	VA burden	Device	VA burden
MTX3.5EC : 1 No	3 VA	MTX3.5 + COM : 3 Nos	9 VA
ZSI : 1 No	1 VA	ZSI : 3 Nos	3 VA
Total	4 VA	Total	12 VA
Connect to PS module O/P 1		Connect to PS module O/P 2

Ordering information for Power Supply Module

Cat no – CL90722OOOO

Previous Next

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).