# Delta-Connected Variable Load

**Libraries:**

Simscape /
Electrical /
Passive /
RLC Assemblies

## Description

The Delta-Connected Variable Load block models a three-phase
variable load wired in a delta configuration. Each limb of the load contains a resistor.
The block calculates the resistance required to draw the real power of the physical
signal input **P** at the rated voltage that you specify. Therefore,
the block can represent a real load.

To ensure that the resistance is always greater than zero, you specify the minimum real power that the load consumes. The minimum real power must be greater than zero.

### Equations

The resistance is defined by

$$R=3\frac{{V}_{Rated}^{2}}{P},$$

where:

*R*is the per-phase series resistance.*V*is the RMS of rated line-line voltage._{Rated}*P*is the three-phase real power required. If the value of the**P**input port is less than the value of the**Minimum real power**parameter, the block uses the minimum real power to calculate the resistance.

## Ports

### Input

### Conserving

## Parameters

## Extended Capabilities

## Version History

**Introduced in R2021b**