VISHAY MILWAUKEE www.vishay.com Resistive Products Application Note Grid Resistors: Load Steps and Resolution By Daniel Featherstone STANDARD BANKS GRE1 and GRE2 Series grid resistor banks are designed to include 10 % load step resolution. Each GRE1 terminal tap is constructed using a standard NEMA 2 hole pattern and each GRE2 terminal tap is constructed using a ½ inch hole. The customer can manually contact terminal R1 in combination with any other terminal, R2 to R11, to achieve the power and resistance required for load testing. R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 Fig. 1 - GRE1 Series Grid Resistor Terminal Tap R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 Fig. 2 - GRE2 Series Grid Resistor Terminal Tap Revision: 08-Jul-15 Document Number: 21045 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 APPLICATION NOTE R1 Application Note www.vishay.com Vishay Milwaukee Grid Resistors: Load Steps and Resolution CUSTOM BANKS Custom-designed load banks can be designed with customer-specific load step resolution. As shown below, combinations of wirewound and grid resistors can be used to achieve specific resolutions. Load Steps Using Wirewound Resistors GRE1 datasheet www.vishay.com/doc?31833 GRE2 Application Form www.vishay.com/doc?31875 Load Bank Application Form www.vishay.com/doc?49893 Document Number: 21045 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 APPLICATION NOTE Revision: 08-Jul-15