RT500 Datasheet, PDF (1/4 Pages) Vishay Siliconix – Wirewound Rheostat/Potentiometer

RT 500
Flexible split-core Rogowski coil for the electronic measurement
of AC waveform currents, with galvanic separation between the
primary circuit (power) and the secondary circuit (measurement).
The patented Perfect Loop Technology definitely solves the problem
of the Rogowski coil opening by introducing a specific magnetic
device. This dramatically reduces both the error due to the position of
the measured conductor within the sensor, and the error due to the
proximity of external conductors.
Electrical data
I_PN
Primary nominal rms current
500
A
M
V_out
Mutual
Output
inductance transfer ratio ¹⁾
voltage (instantaneous) ²⁾
(± 5
V_out
%)
=M
× ^dd_t^{IP 0.064}
µH
V
V_out
Output voltage (sinusoidal wave) ²⁾ V_out = 2 × π × M × f × I_{P AC}
V
Example: @ 50 Hz, 500 A
V_out = 2 × π × 64 × 10^-9 × 50 × 500 = 10.05 mV
L_S
Coil inductance (± 5 %)
125
µH
R_S
Coil resistance T_A = 20 °C typical
40
Ω
High cut-off frequency ²⁾
700
kHz
Accuracy - Dynamic performance data
ε_L
TCM
ε_P
Linearity error
Temperature coefficient of M
Positioning error ³⁾ max
General data
none
30
0.65
ppm/K
%
T_A
Ambient operating temperature (90 % RH)
T_S
Ambient storage temperature
m
Mass
- 10 .. + 65
°C
- 25 .. + 70
°C
85
g
IPxx Protection degree
IP 2X
Standards
Safety IEC 61010-1: 2001 2nd edition

IEC 61010-2-032: 2002

IEC 61010-031: 2002 + Amd 1: 2008
Notes: ¹⁾ LEM provides uncalibrated coils with up to 5 % manufacturing tolerance.
Calibration must be performed within the final application.
2) _{Open circuit condition (no load).}
3) _{Considering a primary conductor of at least Ø 15 mm perpendicular to}
the RT loop.
Features
●● Split core type
●● Ø 70 mm sensing aperture for
non-contact measurement
●● 1.5 m output cable
●● Insulating plastic case recognized
according to UL 94-V0.
Advantages
●● Thin, lightweight and flexible
●● Easy installation suitable even for
the most confined spaces
●● Very low positioning error.
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 Solutions.
N° 97.F9.50.000.0
11December2013/version 2 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
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