HPL Low Tension Current Transformer (LT CT) Energy Meters are designed for accurate and reliable energy measurement in three-phase, four-wire LT systems where currents are measured via external CTs. These meters are ideal for industrial, commercial, and distribution transformer (DT) metering applications.
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Voltage: 3x240V (phase-to-neutral), 50 Hz frequency
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Current: CT operated with secondary currents -/5A (typical), scalable up to 800/5A in some models
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Accuracy Class: Class 1.0 conforming to IS 13779 / IEC 61036 standards
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Display: Typically counter-type or backlit LCD for energy and status indication
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Power Supply: No separate auxiliary power needed, operates directly from supply
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Energy Registers: Active, reactive, and apparent energy measurement with time-of-day tariffs, load surveys, and maximum demand (MD) recording
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Anti-Tamper Features: Phase reversal detection, phase loss, neutral disturbance, magnetic tampering, cover opening tamper detection with event logging
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Communication: Optical port and RS232 for data reading, compatible with DLMS/COSEM protocols
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Operating Conditions: -10°C to +60°C, 95% non-condensing humidity
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Mechanical: Panel mount design, 96 x 96 x 86 mm dimensions, fits standard meter panels
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Burden: As per standards ensuring minimal influence on measured circuits
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Certifications: ISI marked, compliant with Indian Electricity Rules and CEA guidelines
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Distribution transformer metering (DT metering)
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Industrial and commercial load energy auditing
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Revenue-grade billing in LT power supply networks
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Utilities requiring tamper-proof and accurate CT metered devices
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CT-2M: Counter display, 3-phase, CT operated
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CT-2E and CT-2EA: LCD display variants with extended features and easier reading
These meters are designed to provide consistent, accurate measurement with robust tamper detection, suited for Indian electrical networks demanding CT-operated metering.
