Protective AST Line
Article features
- This protective current transformer is used for system protection in conjunction with the appropriate switching devices
- Available in numerous protection classes
- Sealable secondary terminal covers made of clear polycarbonate
- Double secondary terminals on all versions for short-circuiting the secondary windings before opening the secondary circuit
¤ Special designs on request:
- any primary and secondary rated currents
- operating voltage series 1 (1,2kV)
- Cast resin grouting
Download General Characteristics
Classes: 5P10, 5P20; 10P10, 10P20
AST – PROTECTIVE CURRENT TRANSFORMER
ASTP635H
Dis. in mm: 115 x 131 x 65
Pri. bar: 60 x 30 mm
Range: 300… 2000 A
ASTP1257H
Dis. in mm: 170 x 156 x 65
Pri. bar: 120 x 70 mm
Range: 800… 2500 A
AST1256
Dis. in mm: 165 x 145 x 40
Pri. bar: 125 x 60 mm
Range: 1500… 4000 A
AST1256V
Dis. in mm: 129 x 181 x 40
Pri. bar: 125 x 60 mm
Range: 1500… 4000 A
AST1656
Dis. in mm: 205 x 145 x 40
Pri. bar: 165 x 60 mm
Range: 2000… 5000 A
AST1656V
Dis. in mm: 129 x 221 x 40
Pri. bar: 165 x 60 mm
Range: 2000… 5000 A
AST1659
Dis. in mm: 223 x 171 x 35
Pri. bar: 165 x 90 mm
Range: 2000… 6000 A
AST1659V
Dis. in mm: 155 x 239 x 35
Pri. bar: 165 x 90 mm
Range: 2000… 6000 A
AST2065
Dis. in mm: 265 x 155 x 35
Pri. bar: 205 x 65 mm
Range: 3000… 6000 A
AST2065V
Dis. in mm: 135 x 281 x 35
Pri. bar: 205 x 65 mm
Range: 3000… 6000 A
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Conditions of use
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Secondary current
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5 A oder 1 A
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Nominal frequency
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50 – 60 Hz
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max. permissible operating voltage
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720 V
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Test voltage
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3 kV / 1 min
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Thermal rated continuous current
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Icth = 1,2 x Ipr
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Thermal rated short-time withstand current
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Ith = 60 x Ipr
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Rated impulse current
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Idyn = 2,5 x Ith
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Overcurrent rating (FS)
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n < 5
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Insulation class
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E / F / H
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Normative standards
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IEC 61869 Teil 1 + 2 / DIN EN 42600
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Housing
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Gehäuse aus selbstverlöschendem PA66 V0 nach UL 94
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Environmental conditions
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Installation location
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Indoor use
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Ambient temperature (operation)
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-40°C … +60°C
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Ambient temperature (storage / transport)
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-40°C … +60°C
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Altitude
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up to 1000 m
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