TT50-SD Datasheet, PDF (1/4 Pages) LEM – AC Current transformer

AC Current transformer TT 50-SD
Split core transducer for the electronic measurement of AC waveform
currents, with galvanic isolation between the primary circuit (power) and
the secondary circuit (measurement).
I_PN = 50 A
Electrical data
I_PN
Primary nominal current rms
I_OUT
Output current
V_SZ
Output clamping voltage
Î_P
Overload capability - continuous
- 1 min
50
At
16.66
mA
7.5
V
100
A
1200
A
Performance data
εXG
L
TCI_OUT
∆ϕ
BW
Overall accuracy @ I_PN, T_A = 25°C
Linearity error
Temperature coefficient of I_OUT
Phase shift
Frequency bandwidth (± 1dB)
<±1
%
0.1
%
60
ppm/K
1.5° ± 1°
50/60
Hz
General data
T_A
T_S
m
IPxx
Ambient operating temperature
Ambient storage temperature
Mass
Protection degree
- 25 .. + 70 °C
- 30 .. + 90 °C
80
g
IP40
Isolation characteristics
V_b
Rated isolation voltage rms¹⁾
300
V
with IEC 61010-1 standards and following conditions :
- Reinforced isolation
- Over voltage category CAT III
- Pollution degree PD2
- Heterogeneous field
V_d
Rms voltage for AC isolation test ²⁾, 50Hz, 1min
V_w
Impulse withstand voltage 1.2/50ms
dCp
Creepage distance
3.5
kV
6.5
kV
6
mm
dCl
Clearance distance
6
mm
CTI
Comparative tracking index (Group I)
600
Notes :
1) _{If insulated cable is used for the primary circuit, the voltage category}
could be improved according to the primary cable insulation category
(please refer to the cable manufacturer's indications)
2) _{between primary (completely filling the hole) and secondary.}
Features
• Split core type
• Ø 8 mm sensing aperture for non-
contact measurement
• Cable output (1m)
• Isolated plastic case recognized
according to UL 94-V0.
Advantages
• High accuracy and low phase shift
• High isolation between primary and
secondary circuits
• Compact case
• Cost-effective solution
• Easy installation.
Applications
• Power meters
Current measurement for active
power calculation
• Energy sub-meters
For energy efficiency monitoring,
consumption analysis and costs
allocation
• Power quality monitoring
• Condition monitoring
(e.g. motor loads such as
conveyers, pumps or HVAC)
• Distributed measurement systems
Application domain
• Energy and Automation
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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