Smart Transformer Rectifier Unit (sTRU)
Smart & Trusted Rectifiers for Cathodic Protection!
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Reduce failures and improve reliability
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Integrated solution with RTU (Communication with SCADA), Data Logger (Stand-alone Device) and GPS Timer Module
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Easy and Wide operating temperature range: 0℃ to +60 ℃
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Option to monitor and control up to 56 reference electrodes against 5 in traditional design
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Improved data monitoring & control through hi-tech LCD panel and keypad
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Triple communication (Ethernet / GPRS / GSM)
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Allows logging of all parameters with timestamp at defined interval in SD card up to 8 GB
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SMS facility to 2 mobiles provided by GSM interface for critical alarms (approx. 20 alarms) for set / reset
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Facilitates remote monitoring & Control of all parameters through SCADA / MCS via Modbus TCP/IP and Modbus RTU
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Supporting separate logging of Normal Data Events/Alarms, and Current Interruption
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Accurate time synchronization using in-built GPS
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In-built real time clock functionality
Specification
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Input: 3-ø, 415V ± 10%, 50/60 Hz ±3Hz
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Output: 50V, 50A DC or can be customised as per requirements
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Full load power factor ≥0.8lagging @nominal input
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Operating Modes:
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Auto Ref. Mode or Auto Mode
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Constant Voltage/Constant Current Mode
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Manual Mode
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Voltage regulation in CVCC mode: 1%
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Current regulation in current limit mode: 1%
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Maintains PSP within ±20mV (0.08% accuracy) of the set
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value under all conditions in Auto Ref. Mode
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Digital control using DSP processor to protect failures
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Less component count & Easy Maintenance.
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+/- 5V interface allows connection of any type of reference electrode
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Ref Cell Isolation: 2.5KV
SCADA Integration with sTRU
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Supports MODBUS TCP/IP and MODBUS Serial protocol (Monitoring & Control feature)
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Supports proprietary protocol over GPRS (only monitoring)
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Graphical Interface
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Support to communicate over Ethernet / GPRS
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Supports up to 20 numbers of devices
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Option to configure multiple users, devices at multiple locations
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Visualization of Graphs, Events and sTRU parameters