|
|
|
|
Outdoor terminations 110 kV
Technical description
Outdoor termination MKB 126 / 145 / 170 with silicone type insulator uses for the connection of cable line with other elements of power supply systems. Outdoor termination MKВ 126 /145 uses for outdoor and indoor installation, for XLPE cables 64/110 kV with the conductor cross-section up to 2000 mm2.
Marking of high-voltage cable terminations
Basic components
Insulator
• silicone type insulator with glass fiber reinforced epoxy resin tube and silicone rubber sheds
• sheds color –light gray
• top and bottom flanges glued and sealed to the silicone insulator
Cable end
• pre-moulded and factory-tested silicone stress cone
• cable end
• base plate
• branch pipe with flange
• support insulators
• seals and fixing materials
• polybytene insulation oil
• optical fiber splice box for the connection to the equipment
| Application | |||
|
Type |
MKB 126 |
MKB 145 |
MKB 170 |
|
Highest voltage for equipment (Um), kV |
126 |
145 |
170 |
|
Cable conductor cross section range, mm2 |
185÷2000 |
185÷2500 |
185÷2500 |
|
Maximum cable diameter, mm |
130 |
130 |
130 |
|
Maximum cable insulation diameter, mm |
93 |
93 |
93 |
|
Demands to the electrical parameters |
|||
| AC voltage withstand test |
160 kV for 30 min |
190 kV for 30 min |
218 кV for 30 min |
| Partial discharge test |
<5 pC at 96 kV |
<5 pC at 114 kV |
<5 pC at 131 kV |
| Impulse voltage (10+/10- impulses) |
550 kV |
650 kV |
750 kV |
| Climatic characteristics | |||
| Operation temperature |
-45/+50°C |
-45/+50°C |
-45/+50°C |
| Nominal operating current |
limited by cable specification | ||
| Support insulator withstand voltages | |||
| AC voltage | 10 kV | ||
| DC voltage | 20 kV | ||
| Mechanical characteristics | |||
| Maximum allowed inclination with vertical | 45о | 45о | 45о |
| Approximate weight, kg | 115 | 121 | 130 |
| Maximum allowed force on top connector, H (horizontal) | 3500 | 3200 | 2700 |