PT secondary pressure tester

General Secondary Voltage-Drop Automatic Detector Main features: (1) Operate –easily: liquid crystal screen, the whole Chinese characters guide menu, four keys are involved (2) Reliable: wired method of measuring ,principle of measuring difference ,electromagnetic interference proof (3) Accurate: high-tech isolation of PT inside, automatic elimination of surge current (4) Phase converted automatically: measuring the double-phase and three-lines ,three-phase and four-lines automatically, can also check single-phase by self (5) Alarming automatically: checking phases and warning the wrong doing of connecting automatically to assure the safety of operators and instruments (6) Calculating automatically; measuring and then indicating results automatically, and also calculating the composite errors and combined errors (7) Storage function: can store 50 groups of the measuring results (8) Iniquity function: can inquire any stored data (9) Live measuring: can measure directly on the condition of uninterruptible power supply (10) Online function: with communication gateway, can transfer the measuring results to the relative software (11) High accuracy : can measure and memory the zero errors, correct the measured data automatically and delete system errors completely The key technical indexes: (1) Measuring range: comparative difference:0.0001～19.99% angle difference : 0.01～599 (2) Resolution factor: comparative difference: 0.0001% angle difference: 0.01 (3) Accuracy: level 0.01 (4) Measuring deference: 2%