TY - BOOK AU - Singh, L. P. TI - Digital protection: protective relaying from electromechanical to microprocessor SN - 8122405940 U1 - 621.317 Si645d PY - 1994/// CY - New Delhi PB - Wiley Eastern Limited KW - Protective relays KW - Microprocessors KW - Power supply KW - Digital electronics KW - Electric lines KW - Electric power systems KW - Protection KW - Electric power transmission ER -