Categories : Tranformer Testing ,  Transformer insulation testing , 
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DELTA4000 series is a fully automatic 12 kV insulation power factor / dissipation factor (tan delta) test set designed for condition assessment of electrical insulation in high voltage apparatus such as transformers, bushings, circuit breakers, cables, lightning arresters, and rotating machinery.
Two configurations make up the series:
DELTA4110 with external computer (not included) consists of the DELTA4100 control unit and DELTA4010 high-voltage unit
DELTA4310A touch display interface comes with onboard computer, PowerDB software and printer and allows connection to and control of MWA300, TTR300/310E, MTO300, MLR10 and some Megger insulation resistance instruments
Data sheet - Delta4000 Accessories