Transformers. Raise or lower voltage to meet the needs of an individual circuit. 189 products. Phase Converters. Generate three-phase output power from a single-phase input. 11 products. Choose from our selection of AC to AC voltage transformers, including over 200 products in a wide range of styles and sizes. In stock and ready to ship. Typical electrical motor data like nominal current, fuse, start ampere, size of contactor and circuit breaker - for asynchronous induction motors. Online shareable electric circuit diagram. 480V electrical motor wiring data - NEMA amps, starter size, HMCP size for motors ranging 1/2 to 500 hp. Calculate electric motor efficiency. How to convert VA to Amp. in only 1 step: Divide VA between the voltage indicated by the formula. For example a three-phase fan (3P) has a power of 1500VA with a voltage of 208V L-L, then you must divide 1500VA between the voltage 208V and root of three which will result in: 4.16Amp. (1500VA/ (208Vx√3) = 4.16Amp). 5 out of 5 based on 9 reviews | Write a review. $5,615.52. 15 kVA single phase 120V 60Hz (e.g. US) to 230V 50Hz (e.g. Singapore) frequency converter, change 110V 60Hz to 220V 50Hz by a single step up converter, variable output frequency and voltage (V/Hz), up to 300V, 400Hz adjustable. SKU: HZ-50-1115. 72V to 110V DC/DC converter, 120W. The DY120-DD110-72 is a 110V converter of 120W. The converter can convert 72V to 110V DC and supply a DC current of 1,1A to 1,35A. In. 72VDC. Input range. 61.2 - 82.8VDC. Anonymous. May 25, 2007. #1. I need to build a enclosure to house a 3ph speed drive. To dissipate the heat inside, I will need to install 2 units of panel fans which requires 230V single-phase to run. However, only 3ph 400V w/o neutral supply is available. So, I was thinking of putting in a 400V to 230V transformer, but understanding that the From 266 Volts nominal to 230 Volts is about 15% low. Torque will be down about 25%. A common 50Hz rating is 230V:400V. The optimum 60 Hz voltages are 276V:480V. The speed will increase by a factor of 20%. The speed increase may make the motor unsuitable for pump applications. But we are all just guessing. Re: 440V 3Ph without neutral transform to 220V AC Single phase. 05/07/2009 9:06 AM. You want to buy a transformer that has a little higher KVA rating than the loads you are going to connect. If your valve is a 3 phase monster, you will need three transformers. I suspect it only has two wires and therefore is a single phase device. DC / single phase calculation. The voltage drop V in volts (V) is equal to the wire current I in amps (A) times 2 times one way wire length L in feet (ft) times the wire resistance per 1000 feet R in ohms (Ω/kft) divided by 1000: Vdrop (V) = Iwire (A) × Rwire(Ω) = Iwire (A) × (2 × L(ft) × Rwire(Ω/kft) / 1000 (ft/kft)) The voltage drop V Determine the peak voltage (Vpeak) of the AC waveform. This is the maximum voltage reached during one cycle of the waveform. Input the value of Vpeak into the VRMS calculator. Calculate VRMS using the formula: VRMS = Vpeak / √2. The result will be the Root Mean Square Voltage (VRMS) for the given AC waveform. R7gu.