855 Series
Rogowski Coils RT 2000
6
71
27.4
Ø5
15.7
Ø5
34.4
1500 / 3000
Ip
black
-Vs
white
+Vs
Vout = M x dIp/dt
Vout = 2 x π x M x f x Ip AC
Example:
Vout = 2 x π x 0.064 μH x 50 Hz x 2000 A = 40.2 mV
Output voltage (open output, no load)
- dynamic
- sinusoidal signal
Short description:
The Rogowski coil is a closed-air coil with non-magnetic split core, placed
around a conductor or a current bar.
The magnetic field produced by the AC current flowing through the conductor
induces an output voltage in the coil.
This measurement procedure provides galvanic isolation between the primary
circuit (power) and secondary circuit (measurement).
Easy placement of the Rogowski coils allows existing systems to be retrofitted
without time-consuming installation or process interruption.
The Rogowski coil can be used together with the 857-552 Rogowski Transdu-
cer.
Features:
• Split-core style coil for easy installation
• Ø 125 mm coil aperture for non-contact measurement
• 1.5 m or 3 m output cable
• Insulated plastic case to UL 94-V0
Description
Rogowski Coil RT 2000,
1.5 m output cable
Rogowski Coil RT 2000,
3 m output cable
Item No.
855-9100/2000-000
855-9300/2000-000
Pack.
Unit
1
1
Technical Data
Accuracy and dynamic performance:
Linearity error
Temperature coefficient
Positioning error
none
30 ppm/K, related to transfer ratio M
855-9100/2000-000: max. 0.65 %
855-9300/2000-000: max. 0,80 %
(considering a primary conductor of at
least Ø 15 mm perpendicular to the coil)
300 V
rms
(between primary conductor and ground)
3.5 kV
rms
AC / 50 Hz / 1 min
6.5 kV
6 mm / 6 mm
600 V (plastic parts)
IP2X
855-9100/2000-000: 1.5 m
855-9300/2000-000: 3 m
-10 °C ... +65 °C
-25 °C ... +70 °C
90 g
Approvals
Conformity marking
Standards/Specifications
1
IEC 61010-1:2001 (2nd edition),
IEC 61010-2-032:2002,
IEC 61010-031:2002 + A1:2008
Safety and protection:
Nominal isolation voltage
Voltage for isolation test
Impulse withstand voltage (1.2/50 μs)
Adjacent contacts
Comparative Tracking Index (CTI,
Degree of protection
General specifications
Cable length
Ambient operating temperature
Storage temperature
Weight
Technical Data
Electrical data:
Primary rated current I
pN
Coil inductance (± 5 %)
Coil resistance
2000 A
rms
190 μH
60 Ω
(at 20 °C ambient operating temperature,
typ.)
0.064 μH
(WAGO provides uncalibrated coils with
5 % tolerance)
Example shown above
40.2 mV at I
pN
= 2000 A, sinusoidal,
50 Hz (open output, no load)
500 kHz (open output, no load)
Transfer ratio M
Output signal
Max. operating frequency
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes
21.11.2012
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
Ømax 125
Tel.: +49(0)571/887-0
E-Mail: info@wago.com
Fax: +49(0)571/887-169
www.wago.com
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