Questions tagged [single-phase]
AC power with two legs run 180 degrees out of phase
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Electrical diagram for a single phase switch, two way switch and ESTOP
I have a need to do an electrical diagram with the following components:
Single phase motor (GGM the motor is 110V, single phase, 60Hz K91P60FU-T5.) It has five leads according to the data sheet.
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Single-phase diesel generator to three-phase modification
I have a 220 V, single-phase diesel generator and I would like to know if it's possible to modify it to generate 400 V, three-phase. I have never tried this before.
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Single Phase (L1&L2) in 3 Phase Supply Calculation
I have multiple single-phase loads required to be powered from a 3 phase supply with neutral (208/120) V. I'm going to tap to (L1, L2) & (L2, L3) and (L1,L3) respectively. Assuming the load was ...
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How do utility lines wire transformers to go from 3-phase power to residential split phase?
I'm trying to understand how power distribution lines go from 3-phase to single-phase and haven't been able to find a concrete explanation.
I understand that power companies transmit with 3-phase ...
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Solving the problem of connecting a high-current, single-phase load to a three-phase balanced network
I am an electrical technician working in a hospital. In the laundry room, all the cloth washers contain three-phase motors which are balanced loads connected to a 140 A circuit breaker. The ...
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Calculation single phase and three load connected at the same time to three phase network
I have a single phase load (90 A 230 V) and 2 three phase loads (7 kW 400 V 3 phase/9 kW 400 V 3ph+N) connected at the same time to a three phase network.
How the 3 phase calculations (line current of ...
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Trying to get a 10uS pulse width to fire an SCR using a PIC16F884
I have the circuit built and running but I need to shorten the pulse width of the SCR. I am using a PIC16F884 running at 16MHz. I am using a half wave to control a device. When I use a for next loop, ...
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Yacht generators with common neutral - Voltage Balance & Harmonics
In a marine application, a yacht using two generators (not connected in parallel), to feed 7 separate circuit panels, separated disconnects but common neutral.
Both generators have their neutral ...
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Can a single phase supply from a 3 phase outlet result in excessive power meter readings?
Here in Turkey typical residence supply is single phase at 230V.
Years ago a friend's father built a residence and arranged for a three phase supply as he felt that this would provide a more stable ...
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How do plug-in photovoltaic cells work with three-phase current electricity meters?
First off: I'm German, and while I have a bit of knowledge of electrical distribution systems, I am not too experienced with English terminology for the technical terms. So please bear with me. Also: ...
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Why is the grid current of this single-phase AC/DC rectifier not an AC sinusoidal waveform?
I drew a single-phase AC/DC rectifier in PLECS and used bipolar PWM to control it.
Here's my calculation process and related parameters (the duty cycle of Vtri is 0.5):
I think my calculation is ...
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How does neutral in single phase AC work?
How does neutral in a normal one-phase outlet work? I looked on the internet and I know it carries the current back to the source, but does it do that in the inverse of the phase or does it provide no ...
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What ohm readings should be expected when testing the input terminals on a 3 speed blower motor that has been separated from all attachable wires
GENTEQ ECM 3.0 MOTOR WITH MODULE
MODEL:5SME39SXL3019
1 PH 60/50 Hz 3/4HP 120/240 V
9.6/5.6 A 1050 RPM
Cust. Model 51-102603-01
GC09
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How can I control a 5HP single phase motor with an Arduino UNO?
I am able to switch ON and OFF 1.5 HP single phase motor (current rating of 8A) using a relay with a rating of 10A, 250VAC (SRD-05VDC-SL-C.) What can be used to connect a 5HP single-phase motor (28A ...
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Does the dropper between the catenary wire and contact wire carry current?
From my observations, droppers are of metal and they do not have any insulation from the catenary wire or from the contact wire.
The catenary and contact both carry the same phase and voltage so any ...
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AC single-phase fan motor works (almost well) without start capacitor, but not with the correct capacitor connected?
I have a fan motor from a mobile a/c unit here which stopped working. It is for the fan that blows the warm/hot air trough the a/c condenser (exhaust air).
240V AC motor with a 4uF (+/-10%) 450V ...
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Why is North American residential power called single phase?
I am under the belief that North American residential power is a special case of two phase power adequately described by the term split phase. Clearly I am in the minority and want to be convinced ...
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Connecting peak voltage, RMS, line-to-line and line-to-neutral
In EU the line-to-neutral voltage from a power outlet which is single phase (if I understand correctly) is 230V RMS and 50Hz. Then the line-to-line voltage (for the three-phase connection coming to ...
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Is there a device to use 3-phase 400 V and convert into 230 V 1-phase?
I only know basics about electrical power and basically don't know anything about converters/inverters/transformers.
My situation is: I have an EV that I can charge only using 1 phase, up to 6.6 kW. ...
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Difference in wire gauge for three phase and single phase domestic power supplies
I'm trying to understand why the recommended wire gauge for a domestic supply depends on whether you're getting three phase or single phase power. Specifically I'm talking about when the power rating ...
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Small motor seized
Alright I'm trying to get my pellet grill up and running prior to Thanksgiving and I seem to have a seized motor.
The past few days I was working on clearing a pellet clog in the middle of the auger ...
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SCR bridge control circuit
I want to design a single phase 400V 1A power supply using mains (230VAC,50Hz). For which I plan to use a step up transformer which will step up to 400V and then an SCR Bridge rectifier to convert it ...
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Single phase motor starting from high leg voltage
Typically stinger voltage is said to be nonuseable, the 208V between a high leg and a bastard tap. High-leg-delta configuration (Wikipedia).
But since single phase motors require a phase offset to ...
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Fan humming sound when decreasing speed with a dimmer [closed]
I am using a ~large 400mm wall mounted metalic fan (specs below).
I wanted to decrease the speed (and noise) with light dimmers (I tried 2 models so far) but when speed is decreased it makes humming ...
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How to generate sinusoidal signal using hybrid SPWM modulation in single phase inverter?
I understand there are bipolar, unipolar SPWM. Since the switching loss is quite high in these, there also exists a hybrid scheme where for half of the cycle the gates are either on or off reducing ...
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Transformer load
I have 50 kVA delta-wye transformer with 3 single phases secondary (line-neutral) delivered to 3 houses, So if one of the 3 houses drown more power would that affect another 2 houses, or each phase ...
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error iteration limit reached ,I'm a beginner to ngspice I'm using ngsipce by esim fossee help me out pls?
enter image description here
I m trying to single-phase bridge inverter. here I have attached the error image, Schematic, source detail(pulse generator, Dc) transient analysis time. If I'm done a ...
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Single phase 3-speed AC motor won't start spinning or spins in wrong direction
I have a Danby DPAC8399 air conditioner, and its fan motor started acting strangely. Sometimes, it it will only do a hum and won't start, and other times it will do that hum for a few seconds and then ...
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design 3phase vs single phase power supply 1500w
Whats the benefit of a 3phase power supply vs single phase power supply beside the higher power ratings?
Is there difference in a power supply component's efficiency if designed for 3 phase vs single ...
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Connecting a three phase electric motor to a single phase power supply
I would like to know what the cheapest and easiest way to connect a three phase 2.2kW AC induction motor to a single phase 230V power supply is. Also, in this setup, how can the motor be started and ...
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Power-supply input power problem; single phase 220 V AC need to connect to 3-phase multi-voltage (208~520 V AC)
I bought POWER SUPPLY 3-PHASE, SMOOTHED.
I used previous power supply 1-phase as following condition;
Previous supply spec.: 960W 24V 40A
Input: 1 phase 2 wire
Output: 24V DC / around 20A
Load: ...
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gdt and mov surge protection
greetings fellow engineers, i came by to ask you for help, i'm building a circuit that needs to be as resistant to surges as possible. I did my research, and make to this circuit: as it is supply by ...
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Wiring 240 V single-phase AC induction motor to enable operation forward and reverse on a 2-post ramp pulley system
I installed a single phase motor on a car ramp. I need the motor to operate forward and reverse, so the ramp goes up or down.
I understand this is possible with the use of two contactors. I need the ...
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Connect motor in 220 VAC single phase (Line - Neutral) or in 110VAC two phases (110VAC - 110VAC "180 degree out of phase")?
I need to connect A motor of 220VAC to single phase connection :Line - Neutral(220VAC - Neutral).
In my country that doesn't exist so in my country we have this : L1-L2-neutral (110VAC - 110VAC "...
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How can I test the rotor winding of a single phase brushless alternator on a generator?
Context Generator runs but no power output from the alternator.
The manual gives Ohm readings for the stator, excitation and rotor windings. The stator and excitation coil are to spec and have no ...
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Can a 3 phase solid state relay be used instead of 3 single phase relays?
Apologies if this is similar to another question, but I did look before posting. I am trying to understand what exactly differentiates a 3-phase relay from a 1-phase relay. I am controlling three 1-...
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Why is induced EMF of an inductor considered as average voltage and not RMS or maximum?
So my professor discussed to us about induced EMF of an inductor and mentioned that it is an average value and not maximum or RMS if you were to consider which type of voltage it is from the different ...
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I have a single phase induction motor, with no capacitor, and can't see the shaded pole. Can you help me understand how it starts or should start?
I have a small single phase, induction motor with no capacitor. It's not missing, so this has got me thinking it should be a shaded pole. However, I don't see the shaded pole and my motor is just ...
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3-phase PWM inverter
I'm trying to design a three-phase PWM inverter connected to the same single-phase DBR and ac source while keeping the same load for each phase. I have the one-phase circuit but can't do the three-...
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Connection for 11,12 and 14 in the relay based water pump setup
I have a question regarding a relay based water pump setup which is triggered by a float sensor in the water tank.
As you can see in the figure,
I have two relays which are single phase AC.
Both ...
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Phase locked loop for Grid synchronization
Is there any IC available to implement PLL for the single-phase grid-connected inverter?
one solution that I came across is using Texas instruments C2000 series microcontrollers and I also searched ...
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Single-phase thyristor full bridge rectifier vs three-phase thyristor full bridge rectifier
For Single-phase thyristor full bridge rectifier compared to a three-phase thyristor full bridge rectifier, with regards the input current harmonics, does the three- phase rectifier have an advantage ...
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Frequencies of current harmonics 1 phase diode bridge rectifier
I was wondering what would be the frequency of the current harmonics at the input of a 1phase diode bridge rectifier. My believe is that it should be 60Hz for Is1, 180Hz for Is3, essentially every ...
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Understanding Per Unit System
I am having issues understanding the Per-Unit System calculation. I don't come from an exact power engineering background so I hope my question is not too stupid.
For the calculation of base ...
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Two transistor pair inverter and one transistor pair inverter
Today I made DIY inverter (the top one)
I managed to achieve ~2 volts from 5V usb, everything seemed to be ok. But I have question - is this the right way to make inverter? I also found the bottom ...
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Phase and voltage conversion
I have a hypothetical question in regards to phase conversion and transformers, more specifically on their combination. I am not a certified electrician or engineer, so I don't know what all goes into ...
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What can be the consequences of a smaller airgap in a induction motor for the efficiency and rotor current?
Last year I bought 3 motors from a junkyward, and one of them was a 1/4 hp, 4 pole single-phase induction motor made by WEG for an Electrolux washing machine.
Or at least it was supposed to be, cause ...
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Testing a 3-phase ev charger on an 1-3 frequency regulator
Im currently working in an office environment developing a system to communicate over rs485 Modbus with an 3 phase EV charger. Due to the location it is not possible to get three phase power. However ...
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What should be the phase difference in the two windings of a split-phase induction motor?
I'm having a little basic problem here.
I'm trying to reconnect the coils of a 4 pole motor (concentric winding) to make a 2 pole motor.
I've managed to make it work in 2 configurations so far (in two ...
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Two-phase system for a smart house?
First I apologize for my ignorance regarding electrical matters.
I am analyzing a dataset from a smart house.
Some of the power measurements are divided into phase A and B. Their values are somewhat ...
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