Determination of Standard Working Time in the Cable Harness Production Process Using the Stopwatch Time Study Method at PT ABC

Abstract

This study aims to determine the standard working time and evaluate daily production targets in the cable harness assembly process at PT ABC using the Stopwatch Time Study method. The research adopts a quantitative descriptive approach by directly observing operators on the production line under normal working conditions. Working time data were collected from eight work elements through 15 observation cycles for each element. The collected data were tested for uniformity and adequacy to ensure reliability before further analysis. Performance rating was determined using the Westinghouse system, while allowance factors were applied to account for fatigue, personal needs, and environmental conditions.

The results indicate that the total standard time required to complete one cable harness unit is 1,516 seconds. The standard time for each work element consists of 187 seconds for distribution, 208 seconds for sub-assembly, 188 seconds for mounting, 196 seconds for tapping, 180 seconds for ACB installation, 224 seconds for circuit testing, 163 seconds for relay insertion, and 170 seconds for the attachment process. Based on an effective working time of 8 hours per day (28,800 seconds) and a total manpower of 40 operators, the production line is capable of producing approximately 169 cable harness units per day. The findings of this study provide a practical reference for production planning, manpower allocation, and productivity improvement in cable harness manufacturing processes