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JFR ELECTECHNICAL
เข้าร่วมเมื่อ 1 ก.พ. 2021
Hi... Welcome to my channel!
I will be sharing my knowledge in electrical and instrumentation technology by making video presentation. This is for you people who have interest in this field of electrical and instrument technology, a beginner or intermediate alike.
Please be aware that electrical works are dangerous and can be fatal. Safety is a must when handling electrical circuit. Do not work in any energize circuits. Make sure it is isolated from its power source before starting any work.
Please support my channel, subscribe, like and share!!!
Thank you.
JFR ELECTECHNICAL
I will be sharing my knowledge in electrical and instrumentation technology by making video presentation. This is for you people who have interest in this field of electrical and instrument technology, a beginner or intermediate alike.
Please be aware that electrical works are dangerous and can be fatal. Safety is a must when handling electrical circuit. Do not work in any energize circuits. Make sure it is isolated from its power source before starting any work.
Please support my channel, subscribe, like and share!!!
Thank you.
JFR ELECTECHNICAL
Voltage Monitoring Relay. Under/over voltage, phase imbalance, phase loss and reversal protection
Video Chapter:
00:00 What is VMR
00:25 How does VMR works?
00:55 Application sample
01:25 VMR Specification
02:58 VMR Settings
04:03 Undervoltage function
04:45 Overvoltage Function
05:06 Phase Imbalance
05:32 Phase Loss
06:04 phase reversal.
06:32 VMR Function and operation
What is a Voltage monitoring Relay or VMR?
A Voltage Monitoring Relay is a protection device, whose function is to monitor power supply voltage, and provide a safe shutdown of equipment in the event of voltage abnormalities.
How does Voltage monitoring relay works?
Three-phase VMR have a built in Micro Control Unit or MCU which monitor power supply qualities like under voltage, over voltage, phase imbalances or asymmetry, phase sequence, and phase loss. Once any of these is detected above or below the trip value setting in the VMR, the relay will send an output signal to isolate an electrical equipment from the power supply.
Application
It can be used as a protection device in the distribution Panel. If integrated to a main breaker control, it can isolate a number of feeders to protect different loads from voltage abnormalities present in the main power line.
It can also be used as an additional protection device for motors. VMR output contact can be wired in series with the thermal overload device, Where a voltage quality is required to operate them properly and safely.
VMR Specification.
To understand more of the VMR, let's get familiar with basic VMR specifications.
1. Supply voltage :
This is the rated voltage of VRM that match with system voltage thats need to be monitored.
2. Frequency:
50 or 60 Hertz, depending on the standard frequency your country is using.
3. Protection features:
Depending on your system requirement there are 5 basic protection functions that you can include in your specification list
3.1. over voltage
3.2. under voltage
3.3. Phase asymmetry or phase
Imbalance
3.4. Phase loss
3.5. phase sequence or phase reversal.
4. Time delay:
Your VMR will have two time delay functions. First, on delay, when the relay receives normal power, the output signal changes status, after the on delay timer elapse.
Trip time delay, once the relay detected a voltage abnormalities, the trip timer starts to count, and output contacts change status after the trip time elapses.
5. Output contact:
Specify the Number of Normally open and Normally close contacts.
rated ampere, contacts are specified to indicate the current load limit.
6. LED Indication :for active fault signals. This makes troubleshooting easy, as the voltage abnormality is visually available in the relay.
Disclaimer:
Content of this presentation is intended for general information and educational purposes only.
While the information in the video has been verified to the best of my knowledge, abilities and intention to inform. I can not guarantee that there are no mistakes or error.
00:00 What is VMR
00:25 How does VMR works?
00:55 Application sample
01:25 VMR Specification
02:58 VMR Settings
04:03 Undervoltage function
04:45 Overvoltage Function
05:06 Phase Imbalance
05:32 Phase Loss
06:04 phase reversal.
06:32 VMR Function and operation
What is a Voltage monitoring Relay or VMR?
A Voltage Monitoring Relay is a protection device, whose function is to monitor power supply voltage, and provide a safe shutdown of equipment in the event of voltage abnormalities.
How does Voltage monitoring relay works?
Three-phase VMR have a built in Micro Control Unit or MCU which monitor power supply qualities like under voltage, over voltage, phase imbalances or asymmetry, phase sequence, and phase loss. Once any of these is detected above or below the trip value setting in the VMR, the relay will send an output signal to isolate an electrical equipment from the power supply.
Application
It can be used as a protection device in the distribution Panel. If integrated to a main breaker control, it can isolate a number of feeders to protect different loads from voltage abnormalities present in the main power line.
It can also be used as an additional protection device for motors. VMR output contact can be wired in series with the thermal overload device, Where a voltage quality is required to operate them properly and safely.
VMR Specification.
To understand more of the VMR, let's get familiar with basic VMR specifications.
1. Supply voltage :
This is the rated voltage of VRM that match with system voltage thats need to be monitored.
2. Frequency:
50 or 60 Hertz, depending on the standard frequency your country is using.
3. Protection features:
Depending on your system requirement there are 5 basic protection functions that you can include in your specification list
3.1. over voltage
3.2. under voltage
3.3. Phase asymmetry or phase
Imbalance
3.4. Phase loss
3.5. phase sequence or phase reversal.
4. Time delay:
Your VMR will have two time delay functions. First, on delay, when the relay receives normal power, the output signal changes status, after the on delay timer elapse.
Trip time delay, once the relay detected a voltage abnormalities, the trip timer starts to count, and output contacts change status after the trip time elapses.
5. Output contact:
Specify the Number of Normally open and Normally close contacts.
rated ampere, contacts are specified to indicate the current load limit.
6. LED Indication :for active fault signals. This makes troubleshooting easy, as the voltage abnormality is visually available in the relay.
Disclaimer:
Content of this presentation is intended for general information and educational purposes only.
While the information in the video has been verified to the best of my knowledge, abilities and intention to inform. I can not guarantee that there are no mistakes or error.
มุมมอง: 1 699
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Sir pwde po ba i install ang ct sensor sa outdoor? Sa main wire sa labas ikakabit before papasok ng main breaker. Pwde po ba sya mainitan at maulanan?
Yung material nya pang indoor lang. Mas maganda sa loob ng panel. Madali masira ang insulation nya pag direct sunlight at ulan. Baka magawaan pa ng paraan maitago sa may bubong.
@jfrelectechnical6652 salamat sa pag reply boss. Masyado kasi malayo yung inverter ko doon sa panel namin. Pwde kaya lagyan nlng ng cover yung ct sensor ikabit sa outdoor?
I have been using my Milwaukee M18 batteries (from my drill driver and electric impact) to power heated grips on my snowblowers, which really works slick! I was going to install one of these modules on it so as not to run the battery too far down, but after looking at how fragile they're built, I decided to just hook up a voltage gauge instead and just watch the voltage so it doesn't drop too far. My 1-1/2 ah will shut down at 17.6 volts so that's my cutoff line.
Great Information thanks
Please confirm the wire colour of CT, Red-Black polarity
Red is for positive, Black is negative. In the video, i extended the short wire from the CT. That is why the black becomes blue when connected to the inverter.
Great information
Thank you.
❤️❤️❤️
Synthetic voice. Pathetic.
baliktad dapat and ct towards sa load kasi nung sinubukan ko yung away nag negative ang reading
If it works in your set up then its good for you. Just make sure your CT polarity was connected at correct terminals. We can do also flick test of the CT to determine its correct + or - cable. Sometime manufacturer makes mistake also. I did flick test on my CT before installation.
I have two LifePo4 batteries, Basen Green 11.7kWh 51.2V (BG), and Ecoflow Delta pro - inverter 48V 3.6kWh (DP). I use BG to charge a DP battery via XT60 solar input (400W 8A). With the DP application, it is not possible to set the BG not to be completely discharged? Would be such adjustable 48V DC Over and Under Voltage Monitoring Protection Relay suitable for my batteries, so that voltage limit (under 51V) will stop charging DP from BG battery?
Very impormative vidio helps a lot,but better put your vioce in to normal❤❤
Motor connections are not clear. it is in Star or Delta Connection, Please Explain
Sir, regardless of the motor winding inside the motor. Star or delta configuration. The motor can run forward or reverse, just swapping any two of the power supply cables.❤
Bergnaum Pine
Gonzalez Elizabeth Wilson Robert Thomas Maria
The thing is you’ll need to manually change it depending on the time of year.
Yes, your correct if you use a timer instead of a photocell.
❤
How can u tell if the battery is charging or not
You need to have a multimeter atleast to check voltage. Before charging and give a little boost charge if your battery voltage did not rise or no changes. You have a battery problem.
Sana meron video how to setup this
Really nice video ❤
Bro nakadisable reflux derating mo dito? Pag mataas ang harvest and lower and load, yungnsbrang harvest babayaran mo sa du. Tama ba?
Hindi brod Grid Tie lang yan di Hybrid. Kung anong load yon lang ang tatapatan ng inverter. Di siya magbibigay ng sobra sa DU.
Wala ako net metering kaya di dapat sobra sa load kundi. Dahdag singil pa sa atin yon ng DU.
@@jfrelectechnical6652 sa time 7:53 nag export ka pa din ng power sa DU. ganyan din kase setup ko, palaging nageexport mag high ang harvest versus sa house load
lahat po ba ng inverter pati hybrid may ports para sa GTI PV Solar System/CT Limiter?
Meron po basta grid tie inverter...
Annoying dumb AI with mind numbing music🖕
Thank you
what is ssr? Is it DA(dc to ac) or DD(dc to dc)?
Sam questions. Ssr. Which amp?
SSR mean Solid State Relay. in this presentation I uses a DD SSR, control is DC and output is for DC since its disconnecting the battery DC supply directly.
❤
Excellent
does this video means if two single pole switch was only use in two locations w/a pulse relay single pole switch can function as 2-way switch
You need a momentary contact switches and not a holding contact switches.
This would be the best explanation I've found, but it's lacking rhythm, if you improve the robot voice and long pauses you have a bright future.
very good explain, now i need look for when solar feed battery that day time (LDR Light Dependent Resistor) switch on feed any on, till dark time switch off dont feed any, save battery for use other. hope you know what i mean.
Thank u master
Thanks for all the work
Nice
Great video apart from the REALLY LOUD sound effect idents in the soundtrack.
Yes, thanks for your comment. It's a little bit annoying. Now I know.
Hello dear friend , i need your help please, i have 2 inverters and the each inverter have a ct limiter, i will connect 2 ct limiters on the same wire? as you show on our video? thank you very much
Yes you can install two GTI solar in your electrical system. Two CT limiters in the same wire of the main power supply. Sorry for the very very late response.
Can You please name what CT specification is for this Sofar inverter model?
Ratio CT is 1000:1. That is the specification required for this GTI Sofar model
Hey. I am planning to buy exactly this model. Can You please name the model of the current limiter i need for this unit? Also are You satisfied with the inverter and how the current limiter is working. Thank You
Its been more than three years no issue with my solar set up.
Shouldn't the CT clamp go on the live feed cable coming in to the RCD and arrow putting out of the house so the CT clamp shows how much is going back to the grid. I am talking about Sofar hybrid inverter.Thank you.
Yes, thats what I did in the video. Same with grid tie and hybrid sofar inverter. CT limiter was clamped in one leg of the main cable and arrow pointing out of the house.
Nice explanation.
Glad you liked it
Good info.
Thanks❤
Do appreciate this video. Now I know where the adjusting nuts are, and which screw to adjust 1st then 2nd. Thanks.
Thank you.
Sir, note that my solar inverter grip on rather the energy was more expensive One question, where exactly does the sensor go? ct I have 220 where I connect it in the positive or negative phase or ground in which?
Kahit saan sa dalawa...
THANKS BRO, NICE EXPLANATION,, Ganyan din yung ct ko dapat pointing to meralco yung arrow..kc pag baligtad sa display panel nang inverter ko may minus sign,sa meralco consumption,tapos di nabagal ikot nang electric meter..
yung sa akin lumalabas "Reflux Degrading" nung kinabit ko yung limiter
Kung wala kang net metering kailangan. Naka enable ang reflux derating boss. Kung meron net metering i set naman sa disable.
boss sofar GTI.. pwedi ba yung 2000/1 ratio
di ko matandaan kung may setting selection para sa ratio ng CT. Ito kasi binigay ng vendor para sa model ng sofar GTI ko.
Which inverter is that?
Sofar 2.2 KW Grid tie only.
thanks a lot
Anu tama install ng ct limiter arrow pointed to meralco(main breaker) or papunta sa breaker sa bahay???? Thanks
Going to meralco.
Thank you Very use full content
Bro me alam ka panu parallel dalawang inverter na sofar?
May kanya kanya ba sila pv panel.?
Di ba mali ang gamit jan ct limiter? Kasi may export pa rin eh
Oo bro kanya kanya Sila Ng Panel balak ko Kasi parallel dalawang SOFAR inverter GRID TIE LANG 2.2kw
@@jfrelectechnical6652oo
BY FAR THE BEST VIDEO ON ADJUSTMENT IV'E EVER SEEN
Thanks...