Dears, I recently took charge of reviewing all descriptions of materials (trying to remove duplicates & dummies) on Site Requisitions. I noticed 2 different descriptions: MINERAL INSULATED CABLE, 230 V, 700 °C, 10400 OHM/KM, DUAL, ALLOY 825, Ex e II MINERAL INSULATED CABLE, 230 V, 700 °C, 10400 OHM/KM, DUAL, ALLOY 825, EEx e II According to an electrical engineer, he "supposes" the EEx is a typo error and the Explode protection is only to be Ex, is it correct? I found so many EEx in... Mineral Insulated Cable Ex e II and EEx e II ..read more

Norsork E-001:2016 "System 2 and system 3 cables can be installed on same field tray from branch to single equipment". System 2 is 230VAC cable and system 3 is instrumentation cable. I am trying to figure out how far that branch should be from the equipment in question. From this statement, its seems ambiguous and likely to bring unnecessary discussions late in the project. I would appreciate some guidance if anyone has come across a standard that gives a specific distance... Cable segregation ..read more

Hi, We have been using Hi link Module (HLK-5M05) in the motor controller application for AC to DC conversion. Input voltage is taken from the contactor parallelly. Whenever the contactor is driven, Spike is observed on the output voltage of the HLK-5M05 module which is causing the microcontroller to malfunction (Halt). System will be start working once the controller goes to power on reset Input Voltage (AC): 90V ~ 264V Output Voltage (DC): 5V Output Current: 1A We have replaced... Surge in AC DC Converter ..read more

Dear All we intend to replace our MV switchgears & busbar. Please share your experience which make & origin is the best. Regards ..read more

Do we have someone who has worked on this relays who can assist? I have a THYTRONIC XMR-o relay, it has 1 x RS485 & 1 x Ethernet port which can communicate DNP3 or MODBUS. I'm more interested in configuring DNP over ethernet. I have already tried to connect to the ASE2000 protocol test set and I'm not receiving any DNP messages. I also tried DNP over RS485 and to no avail as well. I suspect the problem is with setting up the relay for DNP 3 communication. I am able to ping the relay after... Thytronic Relays DNP Configurationn ..read more

Hi; My PLC is controlled and communicates via optical fiber. How can I add another communication utility like radio or 3G as support in case of optical fiber malfunction ..read more

Hello Ma'am: Thank you for your posts. I am currently working on Om Sai Switchgear with interface with Raspberry Pi / Arduino interface with the card in Kolkata, India. I had experience in Electrical Engineering role in an Engineering college in WB, India recently. I need to know what control can I implement to boost sales in Switchgear interfaces in my location. I am working on design of a computer board with Raspberry Pi / Arduino Uno or IDE recently... Om Sai Power & Switchgears - Raspberry Pi / Arduino Interface ..read more

Dears I'm asking about what could happen to 11 KV motor winding if it stopped manually. But stil one pole of the circuit breaker stuck close for an hour ..read more

Hello, When I read the FPRGV3 for SRV PI Loop, I have a few questions... I an curious about how to read the Z-1 and PI Loop. Especially I am wondering how to calculate the value of "REF_OUT" Thank you ..read more

good morning; I am electrical engineer, I have a question about thermal protection of HV motors, concerning the importance of winding temperature detedtors in this protection; anyway in case wherever these detectors are defected can we dispense of them and count upon the electrical protection as [ANSI 49,46,51LR and 66]? [49] thermal overload protection [46] unbalance protection [51LR] locked rotor protection [66] number of starts limitation Best regards ..read more