A74-105 データシートの表示（PDF） - Unspecified
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A74-105 Datasheet PDF : 2 Pages
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Current and Voltage Controls
Current Transformer, 3-Phase
Types A 74-10, A 74-11
• 3-phase current metering transformers
for use with current control relays
• Measuring ranges:
A 74-10 5: 0.5 - 5 AAC
A 74-10 20: 2 - 20 AAC
A 74-11 100: 10 - 100 AAC
A 74-11 500: 50 - 500 AAC
Product Description
Ordering Key
3-phase current transformer to measured amplitude of the Type
measures on all three phases. rms-value of the normal Input current
Output voltage proportional phase current.
A 74-10 5
Type Selection
Input current
5 AAC
20 AAC
100 AAC
500 AAC
Type no.
A 74-10 5
A 74-10 20
A 74-11 100
A 74-11 500
Input Specifications
A 74-10 5
Current range
Max. current (continuously)
Max. overload current (t = 30 s)
Rated insulation voltage
Input-output
Overvoltage category
Dielectric strength
Dielectric voltage
Rated impulse withstand volt.
Power consumption
0.5 - 5 AAC
20 AAC
40 AAC
1000 VACrms
IV (IEC 60664)
6 kVACrms
12 kV (1.2/50 µs)
< 0.1 W@5 A
A 74-10 20
2 - 20 AAC
50 AAC
85 AAC
1000 VACrms
IV (IEC 60664)
6 kVACrms
12 kV (1.2/50 µs)
< 0.25 W@20 A
A 74-11 100
10 - 100 AAC
250 AAC
325 AAC
1000 VACrms
IV (IEC 60664)
6 kVACrms
12 kV (1.2/50 µs)
< 1.5 W@100 A
A 74-11 500
50 - 500 AAC
750 AAC
1000 AAC
1000 VACrms
IV (IEC 60664)
6 kVACrms
12 kV (1.2/50 µs)
< 21 W@1500 A
Output Specifications
A 74-10 5
Output voltage
(TA = 20°C = 68°F), RL = 9.5 kΩ)
Output impedance
Tolerance of output voltage
@ rated input current
Temperature variation
Rated insulation voltage (cable)
0.4 - 4 Vp
< 700 Ω
± 5%
± 0.1% per °C
250 VACrms
A 74-10 20
0.4 - 4 Vp
< 200 Ω
± 5%
± 0.1% per °C
250 VACrms
A 74-11 100
0.4 - 4 Vp
< 40 Ω
± 5%
± 0.1% per °C
250 VACrms
A 74-11 500
0.4 - 4 Vp
< 10 Ω
± 5%
± 0.1% per °C
250 VACrms
Specifications are subject to change without notice (19.07.06)
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