MBS FASK-100 User manual

MBS IDNR 8.6.0251/02-2020 (Index_04) page 1 of 9
OPERATION MANUAL
FASK + ROI-3
Thank you for choosing our Rogowski coils FASK and the associated measurement transducer
ROI-3.
Read these operating instructions carefully before installing the product!
MBS AG · Eisbachstr. 51 Germany - 74429 Sulzbach-Laufen
Technical support: [phone] · Fax: [phone]
E-Mail: [email protected] · Internet: http://www.mbs-ag.com
Changes and errors excepted

MBS IDNR 8.6.0251/02-2020 (Index_04) page 2 of 9
The "operation manual" is not a complete directory of all safety measures required to operate the device.
Special operating conditions may require further measures. The "operation manual" contains instructions that must be
observed to ensure your personal safety and to prevent damage to property.
Symbols used:
This symbol is an addition to the safety instructions and indicates an
electrical hazard..
This symbol is an addition to the safety instructions and indicates a po-
tential hazard.

This symbol with the word
Note! describes:
Procedures that do not pose any risks of injures.
Important information, procedures or handling steps.
Table of Contents
Table of Contents.............................................................................................................................................................2
General product description.............................................................................................................................................3
Safety information ............................................................................................................................................................3
Technical data..................................................................................................................................................................4
FASK: Used material....................................................................................................................................................4
FASK: Safety................................................................................................................................................................4
FASK: Technical data...................................................................................................................................................4
FASK: Dimensions........................................................................................................................................................5
ROI-3: Technical data...................................................................................................................................................6
Installation........................................................................................................................................................................7
FASK-Current sensor ...................................................................................................................................................7
ROI-3 measurement transducer...................................................................................................................................8
Liability .............................................................................................................................................................................8
Installation instructions and connection diagram .............................................................................................................8

MBS IDNR 8.6.0251/02-2020 (Index_04) page 3 of 9
General product description
The MBS Rogowski current transformer FASK in combination with the transducer ROI-3 is used for current measure-
ment of AC currents and is primarily used for retrofitting existing systems - either on busbars or on power cables.
Subsequent installation around the current conductor is possible because you can open the FASK sensor. The output
signal of the FASK sensor goes to the transducer ROI-3, which generates an AC current of 1 A at the output. The
transducer ROI-3 is available with different transmission ratios up to a maximum of 10 kA at 1 A.
Measuring of 50 Hz alternating currents up to 10 kA (FASK in combination with the transducer ROI-3)
The output signals of the FASK sensor are connected to the transducer ROI-3.
Safety information
Only qualified electrical specialists are permitted to install, put into operation, maintain and operate the de-
vice.
During all work on the device comply with the national health, safety and accident prevention regulations.
If you do not observe the safety regulations, this can result in death, serious physical injuries or extensive
property damage.
During set-up and operation, observe the applicable provisions and safety regulations (also national safety
regulations), as well as standard engineering practice.
Observe the installation instructions provided!
De-energise the system before starting the work. Check that it is de-energised!
De-energise the device before starting the work. Check that it is de-energised!
The safety-related data can be found in this document and the certificates (EC type approval certificate, if
applicable any further approvals).
Do not exceed the threshold values specified in the operation manual and on the rating plate.
Install the device in an appropriate enclosure with suitable protection type in accordance with IEC 60529 to
protect against mechanical or electrical damage.
Do not exceed the threshold values specified in the operation manual and on the rating plate.
Never operate equipment and current transformer circuits whilst open.
It is prohibited to open or modify the device. Do not repair the device yourself, but rather replace it with an
equivalent device.
Repairs must be carried out by the manufacturer only. The manufacturer shall not be liable for damage due to
violations.
The prerequisites for faultless, safe operation of the device are proper transport and proper storage, set-up
and installation, as well as operation and maintenance.
Only use accessories that comply with the specifications of the device manufacturer (e.g. combination of
FASK current transformer and ROI-3 measurement transducer).
Store the product documentation.

Do not use outdoors!

MBS IDNR 8.6.0251/02-2020 (Index_04) page 4 of 9
Technical data
FASK: Used material
Model FASK 100, 150, 200 and 300
Coil & connection cable Thermoplastic rubber flame retardant according to UL 94 V-0
Fastener acc. PA6 UL 94 V-0
Colour (Coil) orange
Shielding 100% coil and 100% electric wire
FASK: Safety
Model FASK 100, 150, 200 and 300
Certifications CE certified (This product satisfies the provisions of the low voltage directive 2014/35/EU
This product satisfies the provisions of RoHS 2.0 directive 2011/65/EU
Protection degree: IP 68
Insulation voltage coil: 3000V
electric wire: 1000V
Measurement cat. 1000V CATIII; 600V CATIV
FASK: Technical data
Model
FASK-100
FASK-150
FASK-200
FASK-300
Coil length
395 mm
525 mm
665 mm
965 mm
Window size
100 mm
150 mm
200 mm
300 mm
Reference rated current
1,000 A
3,000 A
6,000 A
10,000 A
Weight
app. 100-160 g
Output signal
100 mV/kA @ 50 Hz
Transformation errors
< 0.5 % (central position near the fastener @ 25 °C)
Phase error
≤ 0.5 ° (30 arc minutes)
Maximum current measurable
100 kA
Coil resistance
between 100 and 250 Ohm
Coil diameter (orange cable)
8 mm
Connection cable length
3 m / 5 m
3 m
3 m
3 m
Temperature coefficient
400 ppm/K
Position error
± 1 % maximum
Linearity error
± 0.2 % maximum of the measured value
Bandwidth
1 Hz up to 100 kHz (- 3dB)
Ambient temperature
-30 up to +80 °C
Storage temperature
-40 up to +90 °C

MBS IDNR 8.6.0251/02-2020 (Index_04) page 5 of 9
FASK: Dimensions
Designation
Descriptions
FASK-100
FASK-150
FASK-200
FASK-300
A
Window size A [mm]
135
165
210
310
B
Window size B [mm]
100
150
200
300
C
Outside diameter coil [mm]
151
181
226
326
D
Coil diameter [mm]
8
E
Connection cable length [mm]
3000 / 5000
3000
3000
3000
F
Coil length [mm]
395
525
665
965
+
-
Shield
+
-
Shield

MBS IDNR 8.6.0251/02-2020 (Index_04) page 6 of 9
ROI-3: Technical data
Model
ROI-3
Number of phase connections
3
Rated signal output
1A AC rms
Max. output (overload)
1.5A AC rms
Rated primary current [A]
250; 400; 630; 1.000; 1.500;
2.000; 4.000; 6.000; 10.000
Measuring error
0.5 % @ 1 % (≥10 A) up to 110 % of rated primary current @ 25 °C
Phase error
≤ 0.5 °
Linearity error
± 0.2 % of measurement value (@ 10 –120 % of rated current)
Frequency bandwidth
30 Hz up to 5 kHz
Maximum burden per phase
0.5 Ω
Energy consumption
10 W
Output @ 0A (zero drift)
≤ 0.01A
Temperature coefficient
200 ppm/K
Weight
185 g
Dimensions
114 x 100 x 22.5 mm
Power supply
24V DC
Operating temperature
-30 °C up to +70 °C
Storage temperature
-30 °C up to +70 °C
Relative humidity
80 % max without condensation
Protection degree
IP 20
Certifications
CE certified (This product satisfies the provisions of the low voltage directive
2014/35/EU)
and complies with the requirements of EN 61326-1: 2013

MBS IDNR 8.6.0251/02-2020 (Index_04) page 7 of 9
Installation
FASK-Current sensor
The installation of these sensors is very easy. In a few simple steps, the coil is placed around the primary conductor
and closed at the lock. The primary conductor does not have to be disconnected.
To open the FASK Rogowski current transformer, turn the bayonet catch to the left (unlock measuring line).
(Fig. 2)
Pull the coil line out of the housing. (Fig. 3)
Guide the coil cable around the power rail. (Fig. 3)
Slide the coil cable into the enclosure. (Fig. 4)
Turn the bayonet catch to the right until the end of the measuring coil audibly latches.
Make sure that the measuring coil does not touch the power rail that is to be measured or a neighbouring rail,
because the maximum permissible temperature of the signal line is +80 °C.
Connect the signal line of the FASK Rogowski current transformer to the input terminals of the measurement
transducer ROI-3.
Secure the FASK Rogowski current transformer to the primary conductor. To do so, guide a cable tie through
the intended fixture on the enclosure of the current transformer.
Ipr
Ipr
The direction of the primary cur-
rent is shown as an arrow on the
black plastic fastener. This direc-
tion of current must be considered
during installation.

A cable tie can be used to fix the
coil to the primary conductor.
Please pay attention here to the
appropriate temperature range.


MBS IDNR 8.6.0251/02-2020 (Index_04) page 8 of 9
ROI-3 measurement transducer
Select the correct ROI-3 transducer (ratio).
Connect the FASK Rogowski coil to the input of the ROI-3 transducer!
The FASK Rogowski current transformer and its connection cables must not exhibit any insulation damage.
The output signal (1 A) must be connected exclusively with potential-separated 1 A current transformer in-
puts.
It is prohibited to connect the input or output signal with external voltage. This can lead to the destruction of
the ROI-3 measurement transducer.
Ensure adequate dimensioning of the power supply unit (24 V / 1 A)!
It is necessary to connect the earth of the supply voltage (- 24 V) to ground (GND)
Do not use the device in close proximity to strong, high frequency fields (distortion of the measured value)
Liability
The choice of the transducer used, as well as the selection of the measuring devices used, are the sole responsibility
of the user. No liability or guarantee is assumed for this choice. The information in the catalogs and data sheets does
not represent any assurance of special properties, but results from empirical values and measurements. Liability for
damage caused by incorrect operation / configuration or malfunctions of the measuring circuit is excluded. The opera-
tor / project planner must ensure that incorrect operation, incorrect configuration and malfunctions cannot cause fur-
ther damage.
No warranty is assumed for defects and damage caused by improper use of the FASK Rogowski current transformer
or the ROI-3 measurement transducer or by disregarding this manual.
Installation instructions and connection diagram
As with any Rogowski coil, the positioning of the primary conductor affects the accuracy. The FASK series is designed
in such a way that the slightest error occurs directly on the lock and thus in the area of the fixing option. The following
figure illustrates this and defines the exact error values.
Primary conductor position
Typical error [%]
Right on the clasp
< 0.5
In the center up to the outer
edges of the coil
< 0.8
Right on the opposite side of
the clasp
< 1.0

MBS IDNR 8.6.0251/02-2020 (Index_04) page 9 of 9
Connection example to a meter with 1 A current transformer inputs
The 1 A outputs of
the ROI-3 must
not be earthed.
Likewise, the input
terminals of the
measuring device
must not be
earthed.
energy meter
I1 I2 I3
S1
S2
S1
S2
S1
S2
current measurement (1 A inputs)
A(+)
B(+)
C(+)
A(-)
B(-)
C(-)
+
-
+
-
+
-
24 VDC power supply
with at least 0.7 A
Power (-) is grounded.
~
=
(GND)