⚡ IEEE C37.96 (49 Stator/Rotor I²t Thermal Damage Curve & Safe Stall Time Sec)

MV Motor Thermal Overload (49) Calculator

Coordinate medium-voltage (2.4 kV to 13.8 kV) induction and synchronous motor protection relays (SEL-710 / GE Multilin 869) under IEEE C37.96: model dual-rate thermal overload heating/cooling time constants (ANSI Device 49), coordinate with locked-rotor safe stall time (5 to 20 seconds hot/cold), prevent thermal tripping during long acceleration, and NETA testing profits.

1. Project & Operating Inputs

Medium-Voltage Motors Protected (Motor Count e.g. 8 4.16kV Heavy Motors)

Motor Rated Power (Horsepower - HP e.g. 2,500 HP Chiller Compressor)

Customer Bid Price for 49/50/51/87 Relay Study & Calibration ($ / Motor)

ETAP / SKM Modeling, Secondary Current Injection Rig, NETA Relay Tech ($)

2. Financial Breakdown & Yield

IEEE C37.96 MOTOR PROTECTION

Turnkey MV Relay Coordination Profit

Electrical Power Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost