ENERGY SHIELD - HT PANEL

General Technical Particulars (GTP) – 11 kV HT Switchgear Panel

General

• Equipment: Indoor Metal-Clad HT Switchgear Panel
• System Voltage: 11 kV/33kV
• Rated Voltage: 12 kV
• Frequency: 50 Hz
• Phases: 3 Phase
• Neutral: Solidly Earthed/As per system requirement
• Applicable Standards: IEC 62271-200 / IS 3427 / IS 13118 (latest editions)

Electrical Ratings

• Rated Continuous Current: 630 A / 1250 A / 2000 A (as specified)
• Rated Short-Time Withstand Current: 26.3 kA for 3 seconds (or as specified)
• Rated Peak Withstand Current: 65 kA
• Rated Power Frequency Withstand Voltage: 28 kV (1 minute)
• Rated Lightning Impulse Withstand Voltage (BIL): 75 kVp

Circuit Breaker

• Type: Vacuum Circuit Breaker (VCB)
• Rated Voltage: 12 kV
• Rated Current: As specified
• Operating Mechanism: Spring-Charged Motor Operated
• Electrical Endurance: As per IEC standards
• Mechanical Endurance: Minimum 10,000 operations

Busbar

• Material: Electrolytic Grade Copper
• Insulation: Heat-Shrink Sleeves/Epoxy Coated
• Short-Circuit Rating: Matching panel fault level
• Busbar Supports: Non-hygroscopic, flame-retardant epoxy

Protection & Metering

• Numerical Protection Relay
• Over Current (50/51)
• Earth Fault (50N/51N)
• Under/Over Voltage (27/59) – if required
• Trip Circuit Supervision
• Ammeter
• Voltmeter with Selector Switch
• Multifunction Energy Meter (optional)

Current Transformers (CTs)

• Ratio: As per load requirement
• Metering Core Accuracy: Class 0.5
• Protection Core Accuracy: 5P10 / 10P10

Voltage Transformer (PT/VT)

• Ratio: 11 kV / 110 V
• Accuracy Class: As specified
• Protection: HRC Fuse

Interlocks

• Mechanical Interlock
• Electrical Interlock
• Door Interlock
• Earthing Switch Interlock
• Truck Position Interlock

Enclosure

• Degree of Protection: IP4X (Indoor)
• Material: CRCA Steel
• Sheet Thickness:
• Door: 2.0 mm
• Structure: 2.5 mm (minimum)
• Finish: Powder Coated, RAL 7035

Cable Compartment

• Bottom Cable Entry
• Suitable for XLPE HT Cables
• Adequate Space for Termination
• Cable Support Clamps

Earthing

• Copper Earth Bus throughout the switchboard
• Earthing Switch with Fault Making Capacity
• Two Earth Terminals

Control Supply

• 110 V DC / 220 V DC / 230 V AC (as specified)

Routine Tests

• Power Frequency Withstand Test
• Mechanical Operation Test
• Functional Test
• Wiring Check
• Insulation Resistance Test

Type Tests

• Short-Circuit Test
• Temperature Rise Test
• Internal Arc Test (if specified)
• IP Test
• Lightning Impulse Test

Accessories

• Operating Handle
• Spring Charging Handle
• Mimic Diagram
• LED Indications
• Space Heater
• Anti-Condensation Thermostat
• Name Plates
• Danger Board
• Cable Glands & Hardware
• Test Terminal Blocks

Documentation

• GA Drawing
• SLD
• Schematic & Wiring Diagram
• Bill of Materials
• Type Test Certificates
• Routine Test Certificates
• O&M Manual