Low Voltage Circuit Breaker Test Record_redacted.pdf

This is a Low Voltage Circuit Breaker Test Record documenting equipment inspection and testing performed at the Veterans Affairs Medical Center in Iowa City, Iowa. The record details testing conducted on a Square D NW16H1 model circuit breaker (Equipment ID: 108H N10, Serial Number: 0851372/1713) with a 1600 Amp frame size and 800 Amp sensor rating, located in the Courtyard ICB-24 room in Building 1. The circuit breaker is equipped with a MicroLogic 6.0H trip device.

The test record documents breaker settings, inspection results, and comprehensive testing data. Physical and mechanical condition, anchorage, alignment, grounding, cleaning, and lubrication were inspected and rated satisfactory. Insulation and contact resistance tests were performed across three channels (A-B, B-C, C-A), with insulation readings at infinity or greater than 4 gigaohms and contact resistance measurements of 12, 11, and 13 micro-ohms respectively. Overcurrent testing was conducted across long time delay, short time delay, instantaneous, and ground fault modes, with detailed amperage and trip time measurements recorded for each scenario. The test was completed on 04/28/23 under the ICB PM Guide protocol. All inspection results indicate satisfactory equipment condition with no deficiencies noted.