MiCOM P631 / P632 / P633 / P634 - Schneider Electric document does not replace the Technical Manual p631 -304-403/404-606 ff // p632 -304-403/404-606 ffMiCOM P633. Transformer Differential Protection Device. P633/EN M/R-21-A. Version. P633 -310 -413/414/415 -651. Technical Manual. Volume 2 of 2 Any modifications to this device must be in accordance with the manual. If any other modification is made without the express permission of Schneider Easergy MiCOM P633 provides high-speed three-system differential protection using a triple-slope characteristic and two high-set differential elements in The operating manual for this device gives instructions for its installation, commissioning, and operation. However, the manual cannot cover all conceivable MiCOM P633 Transformer Differential Protection Device, SW Version -651, Manual (global file) P633/EN M/R-21-A, P633 -310 -413/414/415 -651. Easergy MiCOM P633 Transformer Differential Protection Device, SW Version ‑652, Manual (global file) P633/EN M/R-32, P633 ‑311 ‑652.