🌡️ IEEE C37.20.1 (65°C Temperature Rise Limit, Silver-Plated Bolted Joints, Heat Joules)

Low-Voltage Switchgear Busbar Temperature Rise Calculator

Calculate continuous thermal equilibrium temperature rise for copper and aluminum main horizontal and vertical busbars inside low-voltage switchgear under IEEE C37.20.1: maintain temperature rise strictly below $65^circ ext{C}$ over a $40^circ ext{C}$ ambient (max total temp $105^circ ext{C}$ for silver-plated bolted joints), and switchgear engineering yields.

1. Project & Operating Inputs

Continuous Bus Current (Amps e.g. 4,000A Main Switchgear Bus)

Copper Busbar Cross-Section (Sq In e.g. 4.0 Sq In / Phase Copper Pack)

Customer Bid Price for Supplied UL 1558 Switchgear Section ($)

Silver-Plated ETP Copper Busbars, Glass Polyester Supports, Copper Lugs ($)

2. Financial Breakdown & Yield

IEEE C37.20.1 BUS TEMPERATURE

Turnkey Switchgear Busbar Engineering Profit

UL 1558 Switchgear Manufacturing Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost