Overload Heater Sizing Chart

Overload Heater Sizing Chart – Heaters should be selected on the basis of the actual full load current and service factor as shown on the motor nameplate or in the manufacture's published literature. Under overload conditions, the heat causes a special solder to melt allowing a. Overload relay heater tables tables 291, 292, 293, 294 trip amps table 291 table 292 table 293 table 294 size fla 25, 30 40 50,60 heater code size fla 25, 30 40 50,60. Obtain full load current and service factor from motor nameplate or from motor manufacturer.

Catalog no 14 c p 3 2 b c 81 phase size class find heater table number below, using the product class, controller size and phase. Select the heater and set the overload. In melting alloy thermal overload relays, the motor current passes through a small heater winding. The type a thermal overload relay (olr) is a bimetallic device which, with the properly selected wire and heaters, will provide motor protection for running and stalled rotor.

Overload Heater Sizing Chart

This will provide integral horsepower motors with protection between 105 and 115%. The type a thermal overload relay (olr) is a bimetallic device which, with the properly selected wire and heaters, will provide motor protection for running and stalled rotor. Ge nema cr306 & cr386 magnetic starters.

The table below should be used to determine which column of motor full load amperes applies for heater selection. Nema control siemens industrial control products heater tables and. Heater table number is found in the column under the type of overload can phase.

Ge molded case circuit breaker quick reference. This document also includes application data and approximate dimensions. Find heater table number below, using the product class, type of enclosure and control size.

Select in order, the base catalog number, the nema type of. If the motor fla is 365amps and the starter has a 600:5 ratio ct, take 600/5 = 120, then divide 365amps by 120 = 3.04 amps.

Square D Thermal Overload Sizing Chart Reviews Of Chart