74010828
Dec 14, 1989
Apr 23, 1991
POWER AND DISTRIBUTION TRANSFORMERS, CIRCUIT BREAKERS, SWITCH GEAR, LOW TO MEDIUM VOLTAGE DISTRIBUTION EQUIPMENT AND HIGH VOLTAGE DIRECT CURRENT ELECTRICAL PRODUCTS AND SYSTEMS, NAMELY, SAFETY SWITCHES, METAL ENCLOSED SWITCHGEAR, MOLDED CASE CIRCUIT BREAKERS COMPRISING FRAME BREAKERS, BUS DUCT AND PLUG-IN UNITS THEREFOR, DISTRIBUTION AND POWER TRANSFORMERS, DRY TYPE POWER TRANSFORMERS, CONVERTER TRANSFORMERS, CIRCUIT BREAKER PANELBOARDS AND LOAD CENTRES, MOTOR CONTROLS, ELECTRICAL FUSIBLE SERVICE EQUIPMENT FOR INSTALLATION IN MAJOR BUILDING POWER ENTRANCES, OIL CIRCUIT BREAKERS AND DISCONNECT SWITCHES; SERVICE ENTRANCE EQUIPMENT FOR INSTALLATION IN RESIDENTIAL AND SMALLER INDUSTRIAL AND COMMERCIAL BUILDING POWER ENTRANCES, COMPRISING FUSIBLE AND CIRCUIT BREAKER TYPES; MOLDED CASE AIR CIRCUIT BREAKERS, COMPRISING FRAME BREAKERS, SAFETY SWITCHES AND ENCLOSED FRAME BREAKERS; INDUSTRIAL MOTOR CONTROL, NAMELY, MANUAL AND MAGNETIC STARTERS, CONTACTORS AND CONTROL ACCESSORIES IN THE NATURE OF UNDER VOLTAGE RELAYS AND PROTECTIVE RELAYS, BUS DUCT, AND UNIT COMPONENTS FOR SUBSTATIONS; PANELBOARDS, COMPRISING FUSIBLE AND CIRCUIT BREAKER TYPES FOR LIGHTING AND POWER DISTRIBUTION; SWITCHBOARDS, COMPRISING FUSIBLE AND CIRCUIT BREAKER TYPES FOR MAINS SERVICE AND DISTRIBUTION; LOW VOLTAGE METAL ENCLOSED SWITCHGEAR; ON LOAD-TAP GEAR FOR TRANSFORMER; ELECTRONIC METERING DEVICES USED TO MEASURE VOLTAGE, CURRENT, KILOWATT HOURS, HOUR FACTOR AND OTHER ELECTRICAL MEASURES; AND GROUND FAULT PROTECTION EQUIPMENT USED TO DETECT LEAKAGE OF ELECTRICITY FROM POWER CONDUCTORS TO GROUND
Electrical and Scientific Apparatus