Acceleration of sampling rate – automatic increase in sampling rates if gas concentrations exceed caution or alarm settings.
Minimal Maintenance – Reduces expense and inconvenience for user.
Benefits:
Transformer faults detected in their infancy, minimizing costly unplanned outages and equipment failure.
Type of fault may be indicated from results.
Photo Acoustic Technology – no costly consumables/calibration gases required.
Applications:
Medium and large sized transformers.
Low/medium risk and/or consequence of failure.
Distribution, Transmission and industrial transformers.
Discrete level of gases for entry level diagnostics.
System Overview:
The MINITRANS is a low-cost on-line discrete multi-gas DGA transformer monitoring unit.
Based on the same core technology as the highly successful TRANSFIX, the MINITRANS is a lower cost alternative, monitoring three key gases: Hydrogen, Acetylene and Carbon Monoxide (in ppm) plus moisture in oil (%RH & ppm). The measurement of these gases allows the user to detect a wide range of developing faults including arcing.
Perception Fleet Software:
Providing critical insight on your transformers condition and overall fleet risk.
Perception Fleet features data trending, condition diagnostics, customizable overview reports, wallboard fleet visualization, alarm notification and visualization.
The smart and standards based logic used in Perceptions Fleet ranking algorithms deliver a simplified yet concise overview of your transformers condition and risk.
The customizable data import and export facility enhances Perceptions interoperability and the expert email notifications ensures the right person receives critical data should a transformers condition change.
Measurements:
Range (LDL - UDL)
Hydrogen (H₂): 5 - 5,000 ppm
Carbon Monoxide (CO): 10 - 50,000 ppm
Acetylene (C₂H₂): 3 - 50,000 ppm
Moisture (H₂0): 0 - 100% RS (given in ppm)
Accuracy: ±10% or ±LDL (whichever is greater)
Sampling Frequency Variable - once per hour to once every 4 weeks
Communication:
Two separate channels for remote communications, local USB connection and Ethernet connection
Communications protocols supported include MODBUS®, MODBUS/TCP, DNP3.0, IEC®61850
Modules available for communication via RS232, RS485, Ethernet, Fiber Optic, PSTN and cellular GSM/GPRS modems
Alarms:
Two sunlight visible front panel LED arrays (Red & Green)
All alarms can be set or changed locally or remotely using Perception software
Six alarm setting screens or scenarios are available, which can set alarms based on the level of the three gasses/moisture, and rates of change for each gas
Each alarm setting screen can activate the alarm relays or send an SMS message if equipped with the optional cellular modem
Single Phase Alarm Relays: NO and NC provided: 1A@250Vac, 200mA@125Vdc, 150mA@300Vdc, 1A@30Vdc
Caution and alarm modes can be used to increase sampling frequency
The alarm results of each screen are independent of the other circuits and alarm setting screens