On-line UHF PD Monitoring System for Transformer HiCMS TM-1000 The HiCMS TM1000 is a monitoring system for assessing the condition of transformers in the field. The system is an on-line partial discharge (PD) monitoring system for power transformers. By monitoring the in-service partial discharge, the insulation performance can be reliability assessed over time and proper maintenance can be taken before a failure occurs. DAUFeatures •HighsensitivePDdetectionfortransformerbasedontheUHFPD measurement technique •LocationestimationofPartialDischargepositionintransformerusing the time of flight method. •AnalysisalgorithmtoclassifybothPDandbackgroundnoise.•Usingnoisemaskingtechnology,reliablediagnosisispossible. •Fullyprotectedagainstsurgeandtransientovervoltage HMIDAU Specification Item Specification Detection frequency bandwidth 300 ~ 1,500MHz Input signal level -85 ~ 0dBm Detection sensitivity Less than 1pC No. of Input channel 12ch Operation temp. -25 ~ 60℃ I 14 15 HiCMS Hyosung intelligent Condition Monitoring System