# How to design a 3-phase resistive load bank?

Electrical Engineering Asked by Douglas on October 14, 2020

We are trying to design a 3-phase resitive load bank to test some step up transformers. We are receiving 3-phase 208v and stepping up to 3-phase 600V with 3-step up transformers wired in delta. Its a floating system Each step up transformer is capable of 800VA.

Q. How do you wire up the load with resistors, to test each transformer at full load? A picture or diagram would be helpful.

simulate this circuit – Schematic created using CircuitLab

Figure 1. Delta transformer with delta load.

Each step up transformer is capable of 800 VA [at 600 V].

• From $P = frac {V^2}{R}$ we get $R = frac {V^2}{P} = frac {600^2}{800} = 450 Omega$.

If possible, having some way to test with load imbalance would be helpful.

450 Ω is your minimum on any phase. You can use any load between 450 Ω to infinity (open-circuit) on each phase.

Answered by Transistor on October 14, 2020

## Related Questions

### Preventing long-press button function on DFPlayer board

1  Asked on December 19, 2020 by michael-reilly

### How adding a capacitor reduces the signal gain to 1 in an op-amp?

1  Asked on December 18, 2020 by srikrishna-jana

### Half-wave rectifier with resistor and inductor load

2  Asked on December 18, 2020 by edwin-vargas

### Sprintf() function bricked Arduino Nano?

2  Asked on December 18, 2020 by dragos-spiridon

### Regarding plugging operations

1  Asked on December 18, 2020 by kamola

### Head to tail transistor pair, not a Darlington pair, not a Szlikai Darlington

1  Asked on December 18, 2020 by tioneb

### Debugging Signal Distortion/Oscillation

1  Asked on December 18, 2020 by cdevelop

### How to avoid input floating ports on a microcontroller?

4  Asked on December 18, 2020 by dean

### Measure voltage of motorcycle battery which varying voltage

2  Asked on December 17, 2020 by cremus

### How to make sure a clocked operation happens just once in Vhdl

1  Asked on December 17, 2020 by runo

### Can a MOSFET work upside-down?

2  Asked on December 16, 2020 by user253751

### Three phase AC power measurement

2  Asked on December 16, 2020 by bud

### How to “clean” a DC brushed motor : noise on CANbus even without moving!

0  Asked on December 15, 2020 by voltsandnuts

### Why does the voltage value on the RESET pin of my microprocessor not go high?

1  Asked on December 15, 2020 by ninjagreg

### Bonding yourself via oscilloscope GND?

1  Asked on December 14, 2020 by manuel

### Would a ground plane/traces impact NFC antenna performance?

1  Asked on December 14, 2020 by yonatan-avhar

### Thermal compound for Alumina Ceramic Insulator

2  Asked on December 14, 2020 by uk25

### Opto-isolation amplifier giving no output

3  Asked on December 13, 2020 by nchaud