Digital display multifunctional power instrument

Digital display multifunctional power instrument   Digital display multifunctional power meter is an instrument used to measure and monitor power system parameters. It has a digital display that can visually display voltage, current, power, power factor, frequency and other power parameters.  Performance Requirement: 1. Basic error: should meet level 2.0, Acceptance error limit: Under the specified reference conditions and meeting the requirements of technical regulations, our bureau will accept 50% of the error limit specified in the verification regulations. Error limit during operation: Meet the technical specification requirements under the specified reference conditions 2. Limit of error change caused by other influencing factors: The additional percentage error change caused by changes in the influencing factors relative to the reference conditions given in the regulations should not exceed the limit specified in the regulations Working conditions: 1. Standa…