Tender For tender for supply of sulphur hexafluoride gas cylinder and other electricals d d ? g? g - sulphur hexafluoride gas cylinder purity 99.93 percent , moulded case circuit breaker 400 a 3 pole 690 v ac with enclosure , moulded case circuit breaker 630 a 3 pole 500 v ac with enclosure , moulded case circuit breaker 400 a 3 pole miocroprocessor based with enclosure , hand driven insulation tester megger 5000 v 5000 megaohm , hand driven insulation tester megger 2500 v 1000 megaohm , hand driven insulation tester megger 500 v 500 megaohm