Math & Numbers

Voltage Regulation Calculator (ΔU%)

Compute transformer or feeder voltage regulation from equivalent-circuit parameters: ΔU% ≈ (I·R·cosφ ± I·X·sinφ)/U·100. Returns both the approximate (linear) and exact (phasor) values; supports lagging, unity and leading power factor.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/voltage-regulation-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"ratedVoltage":230,"R":0.5,"X":1.2,"loadCurrent":20,"powerFactor":0.8,"loadType":"lagging","decimalPlaces":4}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/voltage-regulation-calculator

Parameters

Name	Type	Required	Description
ratedVoltage	number	Yes	Rated terminal voltage at the considered side (primary or secondary).
R	number	Yes	Equivalent series resistance (transformer winding or line).
X	number	Yes	Equivalent series reactance (leakage reactance or line reactance).
loadCurrent	number	Yes	—
powerFactor	number	Yes

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-voltage-regulation-calculator": {
      "name": "voltage-regulation-calculator",
      "description": "Compute transformer or feeder voltage regulation from equivalent-circuit parameters: ΔU% ≈ (I·R·cosφ ± I·X·sinφ)/U·100. Returns both the approximate (linear) and exact (phasor) values; supports lagging, unity and leading power factor.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=voltage-regulation-calculator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "voltage-regulation-calculator",
    "arguments": {
  "ratedVoltage": 230,
  "R": 0.5,
  "X": 1.2,
  "loadCurrent": 20,
  "powerFactor": 0.8,
  "loadType": "lagging",
  "decimalPlaces": 4
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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