Math & Numbers
Three-Phase Short-Circuit Current Calculator (IEC 60909)
Estimate the three-phase symmetric short-circuit current using the IEC 60909 far-from-generator method: I"_k = c·U_n/(√3·|Z|) and i_p = κ·√2·I"_k with κ = 1.02 + 0.98·e^(−3R/X). Source impedance is the series sum of transformer and line R/X.
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/short-circuit-current-calculator' \
-H 'Content-Type: application/json' \
-d '{"systemVoltage":400,"voltageFactor":"1.05","transformerR":0.005,"transformerX":0.015,"lineR":0.01,"lineX":0.005,"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/short-circuit-current-calculatorParameters
| Name | Type | Required | Description |
|---|---|---|---|
| systemVoltage | number | Yes | Nominal line-to-line system voltage at the fault location. |
| voltageFactor | select | No | IEC 60909 voltage factor: 1.00 (worst-case tolerance), 1.05 (LV max), 1.10 (HV max). |
| transformerR | number | No | Optional. Transformer equivalent resistance referred to the fault side. |
| transformerX | number | No | Optional. Transformer equivalent reactance referred to the fault side. |
| lineR | number |
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-short-circuit-current-calculator": {
"name": "short-circuit-current-calculator",
"description": "Estimate the three-phase symmetric short-circuit current using the IEC 60909 far-from-generator method: I\"_k = c·U_n/(√3·|Z|) and i_p = κ·√2·I\"_k with κ = 1.02 + 0.98·e^(−3R/X). Source impedance is the series sum of transformer and line R/X.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=short-circuit-current-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": "short-circuit-current-calculator",
"arguments": {
"systemVoltage": 400,
"voltageFactor": "1.05",
"transformerR": 0.005,
"transformerX": 0.015,
"lineR": 0.01,
"lineX": 0.005,
"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).