11KV RING MAIN UNITS

TESCO is an SF6 insulated outdoor ring main unit designed for secondary distribution networks up to 12Kv. Our RMU offers with a sealed stainless steel tank that contains all the live components and switching functions. The stainless steel tank is robotically welded and is sealed for life ensuring a high level of personnel safety as well as a maintenance-free system. Fully Type tested in STL Accredited Laboratory. Suitable for both indoor and outdoor applications. Extension available on both sides of the RMU. Panel design to meet the temperature rise limits as per the standards. Padlocking facility on the front panel to prevent unwanted closing operations. Our RMU is also available motorized and with SCADA Single line mimic diagram for simple and safe operation High-level operator safety and operating reliability

NORMAL WORKING CONDITIONS

  • Installation type : Indoor/Outdoor
  • Ambient temperature: -5℃~+50℃
  • Altitude : Sea level 30mts
  • Maximum humidity: 100%.
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STANDARDS


TESGO complies with IEC 62271-100, 200 ,102 and 103.


SAFETY


1. All Electrical and Mechanical Interlocks are provided for safe operation

2. Padlocking facility on the front panel to prevent unwanted closing operation

3. All Switching functions are enclosed in an SF6 gas-insulated steel tank, sealed for life.

4. Internal Arc resistant


DescriptionParameters
TypeTee Off type
Rated Voltage 12 kV
Rated Current 400 A
Rated Frequency 50 Hz
Power Frequency Withstand Voltage 28kV rms
Lightning Impulse Withstand Voltage k75kV pea
Short-Time Withstand Current 21 kA
Peak withstand current 52,5 kA
Duration Of Short-Circuit 3 s
Internal Arc Classification A FL
Partition Class PM
Insulation Medium SF6 Insulated
Type Of Application Indoor /Outdoor
Degree Of Protection For RMU Unit IP54
Degree Of Protection For TankIP67
Rated supply voltage of auxiliary and control circuits 24 Vdc
Standard Colour RAL 7012
Normal Service Condition -5℃~+50℃
Dimensions ( 2 LBS + 1 CB)
Height 1755mm
Width 1198mm
Depth 1122mm