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2.3 Technical specifications
2.3.1 General specifications
Refer to the table for the standard technical specifications of the bushing. For conditions exceeding the
specifications, please contact ABB.
Application:
Classification:
Ambient temperature limits:
Immersion medium on switchgear side:
Immersion medium:
Oil-level in transformer:
Maximum pressure of medium:
Angle of installation:
Test tap:
Voltage tap:
Capacitance C
Arcing horns:
Conductor:
Markings:
Installation and maintenance guide
1ZSC000563-AAB EN, REV. 6, 2019-09-12
of test tap:
2
Transformers
Tranformer bushing
•
Resin impregnated paper, capacitance graded, oil
immersed.
•
Temperature class E (120 °C) according to IEC 60137.
-40 °C to +40 °C.
SF
gas.
6
•
Maximum daily mean temperature: +75 °C.
•
Maximum pressure: 850 kPa (abs).
•
Minimum pressure: 350 kPa (abs).
Transformer oil.
•
Maximum daily mean oil temperature: +90 °C.
•
Maximum temporary oil temperature, at normal load:
+100 °C.
•
Maximum temporary oil temperature, at short time
overload: +115 °C.
Not lower than 30 mm from the bushing flange.
p
100 kPa (p
= relative to ambient pressure).
g
g
From horizontal to vertical.
According to IEEE potential tap type A. U
According to IEEE potential tap type A. U
<5000 pF
N/A
Center-tube conductor.
Conforming to IEC/IEEE.
= max 600 V.
r
= 6 kV.
r
11
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