Fixed Output DC Regulated Supply
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- 10000pcs pc/month
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1. Product Description:
Voltage stabilizer is a device which makes the output voltage stable. Regulator with constant voltage, control circuit, and servo motor, etc.. When the input voltage or load changes, the control circuit for sampling, comparison and amplification, then drive servo motor to rotate, and the pressure regulating carbon brush position change, by automatically adjust the number of turns of the coil, so as to maintain the stability of the output voltage.
The fixed output DC regulated power source is composed of isolation transformer, bridge rectifier,large capacity filter power tube of big power modular regulating circuit,protective circuit, it can work continuously for a long time with the function of sufficient output current,small wave,high stability,reliable performance,limited over-current protection and self-recovery.
2. Product Characteristic:
It is available for any places that requires DC power supply as laboratory,industrial control,telecommunication,electrical maintenance,accumulator charging,electrolysis and electroplating, etc。
3.Specification：
Single phase:185-250V, output:220±5%
Three phases:330-450V, output:380±0.5%
Input frequency:50Hz±5%
Alarm value of output voltage
Single phase:output higher than 242V or lower than 198V
Three phases:output higher than 418V or lower than 342V
4. Reference Picture:
- Q: I have a 120v-36v transformer hooked up to a bridge rectifier composed of 4x IN4004 diodes, 2 filter capacitors and a 100k resistor paralleling them as a bleeder resistor. The rectifier puts out the full 50v DC I expect it to, but at the same time the transformer faintly vibrates (you can only really tell if you touch it), and over time it gets quite hot. Why is this? I have checked over my connections quite a few times and I am 99.9% sure its all connected properly.
- Since you are getting the correct voltage from the transformer+rectifier+filter, the most likely reason the transformer is heating is that it is has been designed with the least amount of wire that can possibly do the job, and thus the resistive losses are fairly high in the primary winding (the winding connected to 120 V). If you will be drawing a lot of power from the supply, you should ensure adequate ventilation for the transformer for cooling. Most transformers have a strap that can be mounted to a metal case to help dissipate some of the waste heat. If the excess heat is a problem, you might consider upgrading to a higher wattage transformer. Be sure to check the output voltage under load - it won't be nearly as high as when there is no load connected. The vibration may be due to low quality lamination in the metal transformer core, or loose windings, or both. (The transformer core is made up of thin strips of iron that are insulated from each other, usually with a thin lacquer coating. Quality transformer cores will be very tightly laminated.) The vibration/noise is consistent with the apparent low quality of the transformer, but should not be a problem.
- Q: Branch circuit cables are rated for 75?C and feeder cables are rated for90°C. This will be a 3-phase, 575-volt system with four induction motors, specified asfollows:Motor 1: 60 hp 0.90 p.f. squirrel cage motorMotor 2: 60 hp 0.90 p.f. squirrel cage motorMotor 3: 40 hp 0.85 p.f. wound rotor motorMotor 4: 7-1/2 hp 0.80 p.f. wound rotor motorA) Assuming no line losses, find the capacity of the transformer required to supplypower to this system.B) Assume that it is desired to improve the overall power factor for this system to 0.95lagging. Determine, in kVAR, the required capacitance for this power factorcorrection.C) Assume these motors have their windings connected in a delta configuration. Whatwould be the line voltage if they were connected in wye?
- I would look in the NEC for the full load amperes of these motor sizes. These are: 7.5 HP9 amps 40 HP.41 amps 60 HP.62 amps The 7.5 HP motor KVA will be KVA 575 * 9 * 1.732 8.9631 The 7.5 HP motor KW will be KW 575 * 9 * 1.732 * 0.8 7.17048 The KVAR of this motor is Sqrt(8.9631^2 - 7.1705^2) 5.3778 The 40 HP motor KVA will be KVA 575 * 41 * 1.732 40.8319 The 40 HP motor KW will be KW 575 *41 * 1.732 * 0.8 5 34.707115 The KVAR for this motor is Sqrt(40.8319^2 - 34.7071^2) 21.5095 The 60 HP motor KVA will be KVA 575 * 62 * 1.732 61.7458 The 60 HP motor KW will be KW 575 *62 * 1.732 * 0.8 5 55.5712 The KVAR for this motor is Sqrt(61.7458^2 - 55.5712^2) 26.9141 The total KVA requirement for all motors running at once is 8.9631 + 40.8319 + 61.7458 + 61.7458, which is 173.2866 KVA (note this is the requirement from a transformer, not the size of the transformer The total KW of all the motors is 7.1701 + 34.7071 + 55.5712 + 55.5712 153.0196 KW The total KVAR of all the motors is 5.3778 + 21,5095 + 26,9141 + 26.9141 80.7145 KVAR The power factor for all the motor is KW / KVA 153.0196 / 173.2866 0.883 I took a short cut at this point and used an application i wrote to calculate the required capacitor KVAR. The results follows: At 0.95 power factor, the motors' KVA will be 161.065 The motors' KW will be the same. The motors' KVAR will be 50.2926 The required capacitor's KVAR will be 53.988 The reactance of the capacitor will be 10.65 ohms The capacitance will be 3.49059248 E -4 Farads You can calculate these values as I did above, if you want to. EDIT Forgot the last answer. The line voltage is the same for both delta and wye. The leg voltage for the wye motor will be 575 / 1.732 331.98 volts TexMav
- Q: 110kv level, the capacity of about 43MVA transformer models and detailed parameters
- SSZ10-50000 / 110 ONAN YN, yno, d11 110 ± 8 × 1.25% / 38.5 ± 2 × 2.5% / 10.5 Rated current (A) High pressure side 262.4 / Medium pressure side 749.8 / Low pressure side 2749.3 No load loss 35.3kw No-load current 0.09% Short circuit loss (kW) High - Medium 200.8, High - Low 202, Medium - Low 157 Short Circuit Impedance (%) High - Medium 10.06, High - Low 17.78, Medium - Low 6.35
- Q: Power industry, Taiwan change, Taiwan, transformers in the concept of what is the difference? Also, what does the measurement point mean? First into this line, hope you brothers help.
- Transformer refers to equipment; Taiwan change is installed in a place of the transformer, is specifically installed, running a transformer; Taiwan area refers to the regional range of variable power supply. Metering point is for the two sides to determine the installation of electric energy meter position, in general, the measurement point should be set at the demarcation point of property rights.
- Q: I just saw the movie and im still trying to take in all that just happened. It was pretty awesome, and for me being a transformers fan since i was little (im 17) i got really connected to the characters. other viewers just familiar with the movie might not feel the same way. like when ironhide was killed, i was like hellll no wtf just happened. i was so mad. And when sam killed my all time favorite character starscream. I was so upset that he died that way. Just curious of your thoughts on the movie and if you think there will be a 4th. (i think so but not for maybe 4 or 5 years). Even though they killed off starscream,ironhide, megatron, etc. They can always come back as galvatron and all that, plus theres still unicron thoughts?
- Its fantastic because of the fact they killed of a few of your favourite characters. exciting. i've got not considered it, yet I in simple terms want to comprehend if Megan Fox's exchange replaced into fairly that undesirable of an actress?
- Q: I wa watching the films and was wondering how the transformers just spawn more and more. For example soundwave made the panther thing then it made the thin robot and all those construction guys too, then they made the huge robot with the balls.
- Haha, well from what I remember, the bodies were assembled on cybertron. But that wasnt it. In order to create actual life the transformer needed The Matrix, an orb (or in the live action movies, a slender metal thingy?) which would allow a spark from the Allspark (which is essentially transformer heaven if I remember correctly) to enter the body and give it life. This can also reanimate deceased Transformers. The only other times I remember transformers coming to life in the show, is when the autobots found the Dinobots and somehow brought them back to life? Then there was the world eater, Unicron, who was able to upgrade other transformers. An example would be the transformation of Megatron into Galvatron made possible by Unicron.
- Q: I want to buy the original transformers, but i see there are different parts like more than meets the eye orarmada? idk, please help me. :)
- You want the one that's just Transformers. The DVD sets were released from Rhino and have silverish-metallic looking boxes. Forget the later anime series Armada or Energon.
- Q: I want to make presentation about transformers, I need to know suitable definition.I also want to know the Major Components, and Protection devices.Thanks a lot
- A transformer is 2 or more coupled inductors. Usually the coupling coefficient is near 1. Protection devices like fuses and breakers open the circuit when the load current is excessive. Other protection devices include thermal sensors, phase rotation sensors, loss of phase sensors, voltage monitors, etc.
- Q: 1. a district 800 + a layer of 500mm2 shopping malls should choose how much capacity? 2. A 315kva transformer has been for a district 600 households electricity, ask there is a 70 households can access the transformer?
- 800X8 = 6400KW 6400KWX0.5 (use factor) = 3200KW + 50KW mall = 32500KW (full load operation) Choose three sets of 1000KVA transformer ,, 3000 (KVA) X0.9 (functional factors) = 2700KW · · · · · · · · · · · · · · · · · · · · · · · · · 315KVA transformer for 670 is too small ,,, 670X8 = 5360KW, 5360X0.5 = 2680KW 2680KW / 0.9 = 2977KVA Choose three sets of 1000 phase change
- Q: I needto know the full conditions of parallel operation of transformers including details about vector groups.
- I am putting 1 QA for reference. Question If I parallel three 2MVA 22/11kV three phase 50Hz Dyn11 transformers of the same voltages, vector groups and impedances, do I connect all three star points to earth or only one star point to earth? If I want to put a resistance in the neutral connection to earth (NER), do I only connect one which is common to all three or a seperate NER for each? Answer Dear Dario, I will start with the imepdance: every transformer shall have its own because it is there to protect against internal faults as well. You may install only one impedance but that will depend on your protection devices and what they measure, i.e. where you put your CTs and VTs. These impedances must have a disconnect switch. For the first part, it is very general to me but i figure your load is large Medium Voltage motors (a mill), because 2MVA seems little for distribution and a Y secondary in MV is tricky. All neutrals shall be interconnected and connected individually to earth. This is for the case where the only link you have in mind is gone, the whole system will go float; so again, for the first part: all three star points shall be connected. If you're already protected against lightning, then you don't need limitation in surge voltage, i advise not to install a resistor and not connect N to E, i.e. go for an IT system which provides you with two benefits: fault currents are small and it take more than one fault to trip and cause discontinuity to the service,
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Fixed Output DC Regulated Supply
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- -
- Supply Capability:
- 10000pcs pc/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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