Algodue ELETTRONICA RPS50 User Manual

1. INTRODUCTION

This manual provides information on the installation and use of the main
instrument functions. The manual is not intended for general use, but for qualified
technicians. This term indicates a professional and skilled technician, authorised
to act in accordance with the safety standards relating to the dangers posed by
electric current. This person must also have basic first aid training and be in
possession of suitable Personal Protective Equipment.
WARNING!
It is strictly forbidden for anyone who does not fulfil the above-mentioned
requirements to install or use the instrument.
The instrument complies with the European Union directives in force, as well as
with the technical standards implementing these requirements, as certified by
the CE mark on the device. Using the meter for purposes other than intended
ones, understood by the manual content, is strictly forbidden. The information
herein contained shall not be shared with third parties. Any duplication of this
manual, either partial or total, not authorised in writing by the Manufacturer
and obtained by photocopying, duplicating or using any other electronic means,
violates the terms of copyright and is punishable by law. Any brands quoted in
the publication belong to the legitimate registered owners.
The instrument complies with European standards 89/336/EEC, 73/23/EEC and their
following updating.

2. DESCRIPTION

RPS50 is a multiscale Rogowski coil integrator, powered directly from the
mains. An integrator is essential to equalize and shift by 90° the output signal
from the Rogowski coils. It consists of an active electronic circuit with negligible
offset and a good linearity.
RPS50 can be combined with MFC150 coil series. The module is available in the
standard configuration with one of the 3 following fullscales: 0.5, 2.5, 10 kA; 2.5,
10, 50 kA; 10, 50, 250 kA (see chapter 9).
On request the input value and the output full scale can be customized according
to the application.
RPS50 and a Rogowski current transducer is a very flexible system, suitable
for high power load analysis, impulsive current monitoring, DC ripple
measurement, etc.
Due to its specific features, flexible Rogowski coil is an extremely confortable
solution for current measurement and can be used in a number of cases where
traditional current transducer is not the adequate solution.

3. PRELIMINARY VERIFICATION

NOTE
At the opening the box, check that the instrument has not been damaged during
transport. If the instrument appears to be damaged, contact the aftersale service.
The box contains:
• the instrument
• the user manual

4. INSTALLATION

NOTE
The equipment complies with the 89/366/EEC, 73/23/EEC standards and following
amendments. However, if not properly installed, it may generate a magnetic field
and radio interference.
The environment in which the instrument is installed must satisfy the following
features:
• no vibrations
• indoor area
• temperature between -10°C and +50°C (+14°F and +122°F)
• storage between -25°C and +70°C (-13°F and +158°F)
• max. humidity 80% (no condensation)
NOTE
The instrument must not be exposed to sun rays.
Fastening to DIN EN 50022 rail is provided for the instrument.
To mount the instrument on DIN rail, follow the description below:
• Hang up to DIN rail the higher fastening part of the instrument.
• Pull the instrument downward and against the DIN rail. The fastening
down side of the instrument will be hang up on the DIN rail.
• To remove the instrument, use a screwdriver, as a lever, on the iron
hook on the base of the instrument.
5. SAFETY MEASURES & ELECTRICAL CONNECTIONS
WARNING!
Electrical instrument connections must be carried
out only by qualified technicians aware of the risks
involved to the presence of voltage.
WARNING!
Before making any connection, check that the
instrument is NOT POWERED and:
1. the conductor wires are not powered.
2. the power supply corresponds to the values
on the instrument label.
3. the instrument has been installed in a
vibration-free and a suitable temperature
environment (see chapter 4).
4. the wiring is carried out in accordance with
the standards in force in the country where
the instrument is to be installed.
NOTE
For coil connection, please refer to the following table:
COIL CABLES
with edges
GND (-) WHITE edge
IN (+) YELLOW edge
S -
English
GB
USER MANUAL
Subject to change without prior notice.

5.1 POWER SUPPLY

WARNING!
Before connecting the power supply, check if it corresponds to the value on the instrument
label (85...250 V
The instrument has not a protection fuse on the power supply, therefore the installer
must protect it with a current breaker and an overcurrent protection device (315mA
delayed fuse, T type).

5.2 ANALOG OUTPUTS

Two different outputs are available:
• the standard AC output carrying out the instantaneous value, with 3 V
• an optional DC output carrying out the RMS value of the measured current. The
available values are: 0...20 mA, 4...20 mA, 0...1 V or 0...10 V.
WARNING!
Check if the external load parameters comply to the RPS50 Technical Specifications.

6. FULLSCALE SELECTION

The dip-switches allow to select the fullscale value. The following table shows possibilities
for fullscale selection, according to instrument factory preset range.
RPS50 MODEL
0.5 - 2.5 - 10 kA
2.5 - 10 - 50 kA
10 - 50 - 250 kA

7. DC OUTPUT RESPONSE TIME SELECTION

The dip-switch 4 allows to select the response time only for DC output (optional). The
following table shows the response time selection.

8. CALIBRATION

WARNING!
The RPS50 is factory calibrated for best measurement performance. However, it is possible to
perform a customized calibration of each measuring scale if needed.
The following picture shows the three calibration trimmers with the relevant fullscale
values described in the table (fullscale values expressed in kA). Carry out the calibration
following the indications relevant to the own instrument fullscale (1, 2 or 3).

9. TECHNICAL SPECIFICATIONS

POWER SUPPLY
Rated Voltage
Consumption
ELECTRICAL CHARACTERISTICS
Input
Input level (RMS) (1)
Output 1
Output 1 permissible load
Output 2 (optional)
Output 2 DC voltage load
Output 2 DC current load
Available fullscales
(on request)
Accuracy (2)
ENVIRONMENTAL CONDITIONS
Operating temperature
Storage temperature
Relative humidity
MECHANICAL CHARACTERISTICS
Material
Protection degree
Size / Weight
STANDARDS COMPLIANCE
Safety
EMC
(1) The Rogowski coil output is proportional to the rate of change of current.
The calculation formula is: Ampere
manufacturing. The K value is 2 for 100mV models.
(2) RPS50 is delivered with the specified accuracy. Moreover, the calibration of each
scale is adjustable by user to achieve the maximum accuracy in conjunction with the
coil.
(3) The low limit is approximate and it is determined by noise effect on very low signals.
stripped
BLUE cable
WHITE cable
shield
).
ac
SWITCH SELECTION
RANGE
1 2 3
0.5 kA ON OFF OFF
2.5 kA OFF ON OFF
10 kA OFF OFF ON
2.5 kA ON OFF OFF
10 kA OFF ON OFF
50 kA OFF OFF ON
10 kA ON OFF OFF
50 kA OFF ON OFF
250 kA OFF OFF ON
SWITCH 4 SELECTION RESPONSE TIME
ON 150 ms
OFF 50 ms
FULLSCALE
A B C
1 0.5 2.5 10
2 2.5 10 50
3 10 50 250
80...250 V 50/60 Hz
ac
1.5 VA max
no. 1 for Rogowski coil
100 mV / 1 kA @ 50 Hz, other values on request
1 Vrms (max crest factor 4.5)
3 Vrms (max crest factor 1.5)
other values on request
›10 kOhm
0...20 mA, 4...20 mA, 0...1 V or 0...10 V on request
›100 kOhm
 300 Ohm
1) A: 0.5kA B: 2.5kA C: 10kA
2) A: 2.5kA B: 10kA C: 50kA
3) A: 10kA B: 50kA C: 250kA
better than ±1% of full scale
from -10°C to +50°C (from +14°F to +122°F)
from -25°C to +70°C (from -13°F to +158°F)
80% max. without condensation
plastic enclosure
IP20
115 x 100 x 23 mm / approx. 117 gr
73/23/EEC and 93/68/EEC directives,
EN61010.1 safety standard
89/366/EEC directive and following modifications
93/31/EEC and 93/68/EEC, EN50081-2, EN50082-2,
EN61326/A1
x Hertz x K x 10 -6 , where K depends on
RMS
RPS50
Multiscale Rogowski Coil Adapter
fullscale
rms
TRIMMER
- USER MANUAL
GB
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C - MANUALE D'USO
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