HTMC (High Tension Metering Cubicle) Panel specification covers high-voltage electrical metering and control, featuring ratings like 11kV (or higher), currents from 630A to 2500A+, and robust construction (CRCA/Mild Steel) with powder coating for protection, using components like VCBs, VFDs, protection relays (OC/EF), CT/PTs, SCADA integration,and designed for substations, industries, etc., ensuring safe, reliable power distribution and monitoring.
Technical Specifications
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Feature
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Specification
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Rated/Operating Voltage
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11kV / 22kV / 33kV
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System Frequency
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50 / 60 Hz
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Rated Current
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Upto 2500A
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Short-Circuit Capacity
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21kA for 3 seconds or 26.3kA
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Protection Class
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IP54 or IP55 (Weather-proof for outdoor)
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Phase Configuration
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3-Phase, 3-Wire
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Breaking Capacity
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52.5 kA
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Insulation Level
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12/28/75 KVP (Impulse withstand up to 75kVp)
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Mechanical & Material Specification
§ Body Material:
Fabricated upto 2.5 mm thick CRCA (Cold Rolled Close Annealed) or mild steel.
§ Surface Treatment:
7-tank chemical process followed by powder coating (often Siemens Gray RAL 7035 or White).
§ Busbars:
High-conductivity EC Grade Aluminum or Copper, often tinned and resin-cast for insulation.
§ Mounting:
Floor-mounted as a standard, with bottom cable entry.
Major Components
§ Switchgear:
Break Switch (LBS) or Vacuum Circuit Breaker (VCB) with integrated earth switches.
§ Load Metering:
Resin-cast Current Transformers (CT) and Potential Transformers (PT), typically Accuracy Class 0.5.
§ Protection:
High Rupturing Capacity (HRC) fuses and numerical relays for over-current and earth fault protection.
§ Accessories:
Space heaters with thermostats to prevent moisture, and Electronic Trivector Meters
Standard Tests
§ IEC-62271-200, IEC-61439
§ CPRI Type Tested(S/C, Temp Rise, IP)
§ Internal Arc Tested
Brands
§ Novatric Export
Common Applications
§ Industries & Manufacturing | Infrastructure & Utility | Commercial | Renewable Energy | Telecom