A74-10 Transformer Datasheet

A74-10 Datasheet PDF, Equivalent


Part Number

A74-10

Description

(A74-10 . A74-11) Current and Voltage Controls Current Transformer

Manufacture

Carlo Gavazzi Group

Total Page 2 Pages
Datasheet
Download A74-10 Datasheet


A74-10
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
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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 k)
Output impedance
Tolerance of output voltage
@ rated input current
Temperature variation
Rated insulation voltage (cable)
0.4 - 4 Vp
< 700
± 5%
± 0.1% per °C
250 VACrms
A 74-10 20
0.4 - 4 Vp
< 200
± 5%
± 0.1% per °C
250 VACrms
A 74-11 100
0.4 - 4 Vp
< 40
± 5%
± 0.1% per °C
250 VACrms
A 74-11 500
0.4 - 4 Vp
< 10
± 5%
± 0.1% per °C
250 VACrms
Specifications are subject to change without notice (19.07.06)
1

A74-10
A 74-10, A 74-11
General Specifications
Pollution degree
Ambient temperature
Housing
Dimensions
Material
A74-10
A74-11
Weight
A 74-10
A 74-11
Connection cable
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CE Marking
3 (IEC 60664)
- 20 to + 60°C (- 4 to + 140°F)
120 x 45 x 16 mm
150 x 114 x 23
ABS
200 g
750 g
2 m PVC, 4 x 0.4 mm2
UL
Yes
Mode of Operation
The current metering trans-
former is connected to the
current control relays H 475
as follows:
ductor through the hole sever-
al times makes it possible to
meter currents below the no-
minal range.
Red core to term. 5
White core to term. 6
Yellow core to term. 7
Black core to term. 8.
(starpoint - neutral).
- U1.
- U2.
- U3.
The metered conductor is
drawn through the central
hole of the current metering
transformer. Drawing the con-
If the conductor is drawn
through the central hole e.g. 5
times, the metering trans-
former will register 50 A when
the current in the conductor is
10 A.
In amplitude and phase the
output voltage is proportional
to the phase current metered.
Wiring Diagrams
Input current
Correct connection
Output voltage
U1 Red
Incorrect connection
U3 Yellow
Black
U2 White
U1 Red
U2 White
U3 Yellow
Black
Red
White
Yellow
Black
Dimensions
A 74-10 ..
A 74-11 ..
2 Specifications are subject to change without notice (19.07.06)


Features Current and Voltage Controls Current Tra nsformer, 3-Phase Types A 74-10, A 74-1 1 • 3-phase current metering transfor mers for use with current control relay s • Measuring ranges: A 74-10 5: 0.5 5 AAC A 74-10 20: 2 - 20 AAC A 74-11 10 0: 10 - 100 AAC A 74-11 500: 50 - 500 A AC www.DataSheet4U.com Product Descri ption 3-phase current transformer measu res on all three phases. Output voltage proportional to measured amplitude of the rms-value of the normal phase curre nt. Ordering Key Type Input 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 Cu rrent range Max. current (continuously) Max. overload current (t = 30 s) Rated insulation voltage Input-output Overvo ltage category Dielectric strength Diel ectric 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.
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