THE PILLAR MK8 100 KW POWER SUPPLY IS AN SCR CONVERTER, VOLTAGE SOURCE INVERTER UTILIZING SCR SOLID STATE TECHNOLOGY WITH A PARALLEL TUNED CIRCUIT, DESIGNED FOR INDUCTION MELTING AND HEATING APPLICATIONS. THIS SPECIFIC UNIT, MANUFACTURED IN 2001, IS RATED FOR 100 KW OUTPUT POWER AT A FREQUENCY OF 3,000 HZ. THE ELECTRICAL INPUT SPECIFICATIONS ARE 480 VOLTS, 150 AMPS, AND 125 KVA AT 60 HZ. THE MK8 DESIGN EMPLOYS A COMBINATION OF RECTIFIER VOLTAGE CONTROL AT LOWER POWER LEVELS AND INVERTER SWEPT FREQUENCY AT HIGHER POWER LEVELS TO ENSURE CONSTANT OUTPUT POWER AND EXCELLENT FAULT PROTECTION. STANDARD FEATURES INCLUDE A COMPACT, FRONT-ACCESS PACKAGE FOR MAINTENANCE, HIGH EFFICIENCY, AND WATER-COOLED CAPACITORS WITH PRESSURE-SENSITIVE SAFETY SWITCHES. THE UNIT ALSO INCORPORATES COMPREHENSIVE SAFETY FEATURES SUCH AS SAFETY INTERLOCK DOOR SWITCHES, WATER PRESSURE AND TEMPERATURE SWITCHES, AND A DIAGNOSTIC MONITOR TO PINPOINT CIRCUIT MALFUNCTIONS. THE PARALLEL TUNED CIRCUIT MINIMIZES HIGH CURRENTS THROUGH THE INVERTER THYRISTORS, RESULTING IN LOWER POWER LOSS AND HIGHER EFFICIENCY.