ComAp MainsPro Operating instructions

Copyright © 2013 ComAp a.s.
Written by Petra Piclova
Prague, Czech Republic
ComAp a.s.
Kundratka 2359/17, 180 00 Praha 8, Czech Republic
Tel: [phone], Fax: [phone]
E-mail: [e-mail], www.comap.cz
Installation and Operation Guide
Application Guide
Reference Guide
MainsPro
Mains Decoupling Protection Relay
Comprehensive Guide
SW version 1.4, January 2013

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Comprehensive Guide
2
Purpose of the MainsPro manuals
Installation and Operation Guide
The Installation and Operation Guide serves for the personnel providing installation of the MainsPro
unit. It contains wiring and setting instructions needed for service and commissioning of the unit. It
also contains introduction of the user interface and necessary procedures for setting and operation of
the unit. Though MainsPro is very simple and intuitive for the operating personnel, we recommend
keeping one copy of this manual available permanently at the site where MainsPro unit is installed, to
facilitate the necessary service and operation tasks.
Application Guide
The Application Guide serves for the designers and engineers, who process the necessary
documentation and implementation procedures on the site, where MainsPro is installed. It contains
detailed description of MainsPro functionalities and their practical application.
Reference Guide
The Reference Guide contains library of setpoints, inputs and outputs functionalities and detailed
technical information. This information is referenced in the Installation and Operation Guide and
Application Guide.

Copyright © 2013 ComAp a.s.
Written by Petra Piclova
Prague, Czech Republic
ComAp a.s.
Kundratka 2359/17, 180 00 Praha 8, Czech Republic
Tel: [phone], Fax: [phone]
E-mail: [e-mail], www.comap.cz
Installation and Operation Guide
MainsPro
Mains Decoupling Protection Relay
Installation and Operation Guide
SW version 1.4, January 2013

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-2
Table of contents
Purpose of the MainsPro manuals .......................................................................................................... 2
Installation and Operation Guide......................................................................................................... 2
Application Guide................................................................................................................................ 2
Reference Guide................................................................................................................................. 2
Table of contents................................................................................................................................. 2
Introduction.............................................................................................................................................. 3
Purpose of this manual ....................................................................................................................... 3
Conformity declaration........................................................................................................................ 3
Warnings............................................................................................................................................. 4
Installation data ....................................................................................................................................... 5
Dimensions.......................................................................................................................................... 5
List of terminals................................................................................................................................... 6
MainsPro Frame.................................................................................................................................. 6
Wiring.................................................................................................................................................. 7
“Star” connection............................................................................................................................. 7
“Delta” connection........................................................................................................................... 7
Connection with voltage transformers ............................................................................................ 8
Single-phase connection ................................................................................................................ 8
Power supply .................................................................................................................................. 8
Relay outputs connection ............................................................................................................... 9
Binary switches connection .......................................................................................................... 10
Measurement range.......................................................................................................................... 10
Wiring examples................................................................................................................................ 10
User interface ........................................................................................................................................ 13
Control and navigation Pushbuttons - basic operation ..................................................................... 13
Setpoints change:......................................................................................................................... 13
Reset operation time..................................................................................................................... 14
Reset trip counters........................................................................................................................ 14
TEST mode activation .................................................................................................................. 15
Factory default.............................................................................................................................. 15
Mechanical sealing............................................................................................................................ 15
Signalization LEDs............................................................................................................................ 15
Measurement screens....................................................................................................................... 17
Alarm messages ............................................................................................................................... 19

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-3
Introduction
Congratulations to your purchase of ComAp MainsPro unit! MainsPro is a microprocessor-based
protective relay, providing a comprehensive set of protective and supplementary functionalities. The
basic protective functions are:
Voltage
Frequency
Loss of mains
This covers the basic requirements for mains-decoupling (inter-tie, „G59/2“) protection, but allows also
usage in many applications where benefits of the unit’s unique functionality is needed.
Purpose of this manual
The Installation and Operation Guide serves for the personnel, providing installation of the MainsPro
unit. It contains wiring and setting instructions, needed for service and commissioning of the unit. It
also contains introduction of the user interface and necessary procedures to perform setting and
operating of the unit. Though MainsPro is very simple and intuitive for the operating personnel, we
recommend keeping one copy of this manual available permanently at the installation site, where
MainsPro unit is installed, to facilitate the necessary service and operation tasks.
Conformity declaration
Following described machine complies with the appropriate basic safety and health
requirement of the EC Low Voltage Directive No: 73/23 / EEC and EC
Electromagnetic Compatibility Directive 89/336 / EEC based on its design and type,
as brought into circulation by us.
VDE O126-1-1
The unit is certified to comply to the appropriate requirements of the
standard DIN V VDE V 0126-1-1 (certificate ref. 44 207 11 398020,
available upon request), with the following conditions:
The conformity with the Standard DIN V VDE V 0126-1-1,
chapter 4.1/ 6.1, which is declared in the certificate 44 207 11
398020, requires the tolerance against one fault. In order to
fulfill this functional safety requirement, a redundant
architecture has to be built by the usage of two certified units.
It has to be ensured that each of both units is connected to an
output (relay) which is capable to induce opening of the
operated contactor.
CEI 0-21
The unit is certified to comply with the requirements of the standard
CEI 0-21. The product MainsPro CEI 0-21 is set by default to cover
the functionalities and default limits requested by this certification. In
line with this certification, the output !CommTrpPer, set by default on
the RE1 output of the unit, is to be used for opening the circuit
breaker in the connection point between generator and the mains.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-4
Warnings
Be aware that the relay outputs can change state during and after the unit
setting (before the unit is used again ensure that the proper setting is done)!!!
Be aware that the devices connected to binary outputs of the unit may operate
upon disconnection of power supply, measurement inputs and/or binary
inputs!!!
If the device is used in other way then stated by the manufacturer, the
protection provided by the device may be corrupted.
!!! CAUTION !!!
Dangerous voltage
In no case touch the terminals of voltage measurement!
Adjust set points
All setpoints are pre-adjusted to their typical values. Before putting into operation, the setpoints must
be checked and/or adjusted to the required values.
Installation may be done by qualified personnel only.
To avoid personal injury do not perform any action not specified in this guide!!!
Note:
ComAp believes that all information provided herein is correct and reliable and reserves the right to
update at any time. ComAp does not assume any responsibility for its use unless otherwise expressly
undertaken.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-5
Installation data
Dimensions

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-6
List of terminals
BIC
Binary inputs –COM terminal
BI1 –BI4
Configurable binary inputs
UA1 to 3
First set of voltage measurement terminals (UA).
Terminals UA1 and UA2 are internally interconnected
UB1 to 3
Second set of voltage measurement terminals (UB).
Terminals UB1 and UB2 are internally interconnected
UC1 to 3
Third set of voltage measurement terminals (UC).
Terminals UC1 and UC2 are internally interconnected
11, 21, 31, 41, 51
RE1-5 relay contact –common
12, 22, 32, 42, 52
RE1-5 relay contact –normally closed (during fault-
free conditions maintained in open position)
14, 24, 34, 44, 54
RE1-5 relay contact –normally open (during fault-
free conditions maintained in closed position)
L/+
Power supply –high range 85-265 VAC / 110 –370
VDC
+
Power supply –low range 8 –40 VDC. Connect “+”
pole to this terminal
N/-
Common terminal for power supply. In case of DC
supply, connect “–“ pole to this terminal
MainsPro Frame
MainsPro Frame is a MainsPro accessory product, allowing door-mounting of the unit, direct access to
the keyboard and the screen without opening the switchboard, and additional shielding (IP 55) for the
front panel. The frame size is 230x180x34 mm.
For further details visit http://cdn.comap.cz/files/other/Ramecek_MainsPro.jpg

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-7
Wiring
“Star” connection
If used for rated voltage 230 VAC ph-ground, set the setpoint Basic: Uin is to 230/400V, for systems
with rated voltage 120VAC ph-ground, set the setpoint Basic: Uin is to 120V. No additional setting is
necessary for indication of “Star” connection - MainsPro provides automatic detection of phase-ground
voltage measurement. MainsPro provides over-range to 130% of the rated voltage, i.e. 300 VAC for
230 V system and 156 V for 120 V system with no change of measurement accuracy.
L1
L3
L2
N
“Delta” connection
In this arrangement, MainsPro is rated for 400 VAC ph-ph with over-range to 130% = 520 VAC with no
change of measurement accuracy. Setpoint Basic: Uin is to be set to 230/400V, no additional setting is
necessary for indication of “Delta” connection. MainsPro provides automatic detection of phase-phase
voltage measurement.
L1
L3
L2

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-8
Connection with voltage transformers
MainsPro allows connecting HV or other measurement transformers with secondary rated voltage
100V. Provide the "Star" or "Delta" arrangement on the primary windings of the transformers and
connect the secondary 100 V to the MainsPro measurement inputs. Setpoint Basic: Uin is to be set to
120V. This setting provides the guaranteed measurement accuracy for the 100V inputs with over-
range to 120V * 130% = 156 VAC.
Note:
It is recommended to use “Delta” arrangement on the HV side to avoid nuisance tripping caused by
phase voltage unbalance.
Single-phase connection
MainsPro provides support for single-phase applications. Use the UAterminals to connect the
measured voltage to the unit and set the setpoint Basic: System to 1ph. Use the same setting of rated
voltage selection as mentioned above.
L1
N
Power supply
MainsPro provides set of 3 terminals for the purpose of dual power supply range:
8 - 40 VDC: use the terminals + and N/-
85 - 265 VAC / 110-370 VDC: use the terminals L/+and N/-
230 VAC
L N
24 VDC
+ -
Battery

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-9
For proper connection of the power supply, see also the printed sign on the MainsPro unit:
Requirements for power supply connections:
The unit is suitable for permanent connection to the power supply. The power supply circuits must
have sufficient current withstand, corresponding to the appropriate power supply range and comply
with the standards relevant for the installation.
Note:
External power supply is recommended in order to avoid excess of allowed supply voltage (256Vrms,
respectively 370V of peak value including dc offset).
Please be aware that not all power meters can detect the supply voltage including the dc component!
The difference between power supply voltage and measured voltage must not exceed 1kV (peak-to-
peak), otherwise external power supply with appropriate voltage withstand is recommended to use.
For isolated, ungrounded systems is external, galvanically isolated power supply recommended in all
cases.
Requirements for power supply disconnecting device:
In case of power supply from AC voltage, the unit must be equipped by circuit breaker or contactor,
marked as disconnecting device in accordance with the EN 61010-1 standard.
Note:
The power supply circuit 8-40 VDC is internally interconnected with the supply circuit 85-265 VAC. In
case of operation with both power supply terminals connected, keep in mind, that a failure of insulation
in the AC power supply may cause propagation of AC voltage into the circuits of low safe DC voltage,
due to galvanic interconnection of both circuits!
Relay outputs connection
For safety purposes, it is recommended to set all MainsPro relay outputs to inverse logic for failure
trips and signalling. This means that under fault-free conditions all contacts are kept in energized
position. In trip or out-of-range signalling state, the contacts de-energize. In case of power-supply fail,
the unit automatically moves to fault-signalling by de-energizing the output relays, assuring safety
disconnection of the controlled devices. These outputs are marked with exclamation mark
(i.e.!CommTrpPer).
However, the outputs can be set to normal logic which means, that in fault-free state all contacts are
kept in de-energized position. In trip or out-of-range signalling state, the contacts energize. These
outputs are without exclamation mark (i.e.CommTrpPer).
Relay outputs in MainsPro are freely assignable by the setpoints f(RE).
-In default configuration, RE1 serves as the permanently energized common trip output contact
(!CommTrpPer). Use this contact to operate the connector devices with permanently
energized inputs.
-In default configuration, RE2 serves as an impulse common trip contact (CommTrpImp). Use
this contact to operate e.g. opening or UV coil of circuit breakers.
-Remaining 3 relay outputs serve for signalling of any sensed failure.
-The arrangement of RE1 to 4 outputs in default configuration corresponds to the functionality
of the previous NPU-FUV unit outputs.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-10
Binary switches connection
MainsPro provides 4 galvanically isolated binary switches with configurable functionality. These inputs
allow connection of any voltage free contact between the common terminal BIC and the appropriate
functional contact (BI2 –BI4).
Particular functions (External Trip, Fault Reset, Alternative settings, Disable, CB Feedback) are freely
assignable by setpoint in Basic: f(BI).
For full description see chapter “Library of binary switches”.
Measurement range
MainsPro allows using multiple voltage ranges on the measurement inputs with unchanged
measurement accuracy. The following ranges are applicable:
230 V - this range applies in case of "star" connection of the 3-phase system using nominal
230V phase to neutral. It may be also used for single-phase applications 230V phase to
neutral. Overshoot by 30% up to 290V is possible for this measurement range. For this case,
set the setpoint Basic: Uin to 230/400V. MainsPro will adjust automatically the measurement
method, to assure the defined accuracy for the measured voltage 230 V.
400 V - this range applies in case of "delta" connection of the 3-phase system using nominal
400V phase to phase. Overshoot by 30% up to 520V is possible for this measurement range.
For this case, set the setpoint Basic: Uin to 230/400V. MainsPro will adjust automatically the
measurement method, to assure the defined accuracy for the measured voltage 400 V.
120 V - this range is applicable in countries using 120 V nominal voltage phase to neutral.
Another application is for the high-voltage and other applications, using voltage transformers
from rated voltage to 100 V. The guaranteed accuracy applies to both ranges 100 and 120 V.
Overshoot by 30% up to 156V is possible for this measurement range. For this case, set the
setpoint Basic: Uin to 120V.
Wiring examples
This chapter provides examples of possible wiring of MainsPro which can be used as a preparation
concept of wiring scheme.
Note:
ComAp bears no responsibility of functionality of the solution where these concepts are applied.
1. Under normal conditions the undervoltage coil is powered. In case of fault, the voltage is lost
and the breaker undervoltage coil opens.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-11
2. Under normal conditions the Off coil is not powered and contacts are open. In case of failure,
the contacts (12) close and the voltage is applied on the Off coil, therefore auxiliary power
supply (e.g.UPS) is necessary to provide voltage for the Off coil.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-12
3. Under normal conditions the contacts are closed, in case of failure the contacts open. This
wiring is typically used for coil driven contactors.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-13
User interface
Control and navigation Pushbuttons - basic operation
In the measurement screens, use the and arrow buttons to browse through the
measured values as displayed on the 4x20 alphanumerical display. See the chapter
Measurement screens to get the basic orientation.
To enter the setpoints menu, push the button. For setpoints change, see the following
chapter.
To enter the init screen, to reset operation time, perform factory default reset, reset statistics
or enter the Test mode, push the and at the same time. Together with the init screen
display, the unit performs lamp test by simultaneous cycling of all LEDs through all indication
colours.
For confirmation of any value change or query, use the button.
For leaving any value change or query screen without change, use button.
From any screen, press and hold the button for 2 seconds to return back to the main
measurement screen (homepage).
Setpoints change:
1. Push the button to open the setpoints menu.
2. By buttons and browse through the menu. The setpoint groups are displayed in the
cycling order, i.e. from the last setpoint group by button , the cursor moves to the first
group and vice versa.
4 x 20
Alpha-
numerical
display
Signalization
LEDs
TRIP LED
Fault Reset
button
3-phase
voltage
measurement
Frequency
measurement
Last trip
indication
Last trip
timer
Mechanical
sealing
indication
Mechanical
seal
Control and
navigation
pushbuttons

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-14
3. By button or , enter the setpoint group, by button , move one level up in the
setpoint tree. The setpoints are displayed in the cycling order, i.e. from the last setpoint by
button , the cursor moves to the first one and vice versa.
4. If standing on a setpoint, the setpoint change screen opens by pressing or . In the
screen, see the setpoint limits at the lowest row of the screen.
5. The change is done by orders, starting form the least important digit. Use the buttons and
to move between the digits. Use the buttons and to edit the digit. Please note,
that the value is not limited by the parameters limits during editing, but if an out-of-limits value
is set-up, it will not be allowed to store in the unit memory (the change may not be confirmed).
6. After the setpoint change is done, press to confirm the set value, or to leave the
setpoint change screen without saving the changes.
Please note: the unit allows mechanical sealing of the setpoints by the black switch in left-bottom
corner of the unit. If locked, the icon of closed padlock will appear on the position of setpoint
change and the setpoints may not be changed. Also, the padlock icon will be seen on the
“homepage” measurement screen. Once the setpoint change screen is entered and afterwards the
sealing position is changed, the padlock indication is not changed, but the internal lock is applied
immediately.
Reset operation time
1. Enter the init screen, by pushing the and at the same time.
2. Press to enter the Reset Oper.Time? screen:
3. Using and do your selection. By selecting YES, “Operation Time" timer will be reset,
and the last five events will be deleted. Press to confirm your selection.
4. By selecting NO and pressing or by pressing , return to the measurement screens with
no change.
Reset trip counters
1. Enter the init screen, by pushing the and at the same time.
2. Press to enter the Clear Statistics dialog screen:
3. Using and do your selection. By selecting YES, all trip counters will be reset. Press
to confirm your selection.
4. By selecting NO and pressing or by pressing , return to the measurement screens with
no change.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-15
TEST mode activation
1. Enter the init screen, by pushing the and at the same time.
2. Press and to enter the Test mode activation screen:
3. Using and do your selection. By selecting YES, you will activate the TEST mode - see
the chapter TEST mode in Application Guide. Press to confirm your selection.
4. By selecting NO and pressing or by pressing , return to the measurement screens with
no change.
Factory default
MainsPro contains a default set of all setpoints, which corresponds to the typical requirement of
distribution network operator in some countries.
1. Enter the init screen, by pushing the and at the same time.
2. Press and to enter the Factory default activation screen:
3. Using and do your selection. By selecting YES, you will return all previously done
setting to the default values. Please note that by this selection, you will loose all setting
done prior to this operation! Press to confirm your selection.
4. By selecting NO and pressing or by pressing , return to the measurement screens with
no change.
Mechanical sealing
MainsPro allows to mechanically prevent the setting changes by securing the mechanical seal in
locked position by sealing wire. The locked position is indicated at the MainsPro side-print and on the
alphanumerical display.
Signalization LEDs
There are 7 LEDs for indication of MainsPro status with the meaning indicated in the table
below:
In case of signalling different statuses by one LED, the following priorities apply, i.e. the higher
priority signal is provided by the LED:
1. Red flashing
2. Red
3. Orange flashing
4. Orange
5. Green
Please note: the U and f signalization is immediate at detection of fault conditions, regardless
of the set delay for the unit trip. After the conditions get back to the fault-free state, the LEDs
may move back to green colour, regardless of whether the unit is currently in TRIP status.

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-16
Indication of LED LOM is immediate at detection of the particular protection stage (Vector shift
or ROCOF) and fault indication remains active for the period of time, set by the setpoint Basic:
Imp Len Del.
TRIP signalization is delayed according to the particular delay of the appropriate protective
stage.
Meaning of signalling LEDs
LED
Colour
Meaning
TRIP
Red
The unit has the appropriate outputs in TRIP position and the
unit is sensing a fault situation
Red
flashing
The unit has the appropriate outputs in TRIP position, but the
unit is sensing fault-free situation. Fault reset is possible.
Nothing
The unit has no output in TRIP position
U
Red
flashing
Voltage of any phase is above threshold for 1st or 2nd stage
overvoltage
Red
Voltage of any phase is under threshold for 1st or 2nd stage
undervoltage
Orange
flashing
Voltage unbalance (amplitude) is indicated.
If activated together with LED f and LOM, indicates incorrect
phase rotation
Orange
Negative sequence overvoltage or Positive sequence
undervoltage is indicated.
If activated together with LED f and LOM, indicates incorrect
polarity of one phase
Green
All voltages are in fault-free state
Green
flashing
10 minutes floating average overvoltage is detected
Nothing
Over/under voltage protections are not enabled by setpoint
and no other voltage failure is sensed
f
Red
flashing
Frequency as sensed on terminals Ua is above threshold for
1st or 2nd stage overfrequency
Red
Frequency as sensed on terminals Ua is under threshold for
1st or 2nd stage underfrequency
Orange
flashing
Together with LED U and LOM, indicates incorrect phase
rotation
Orange
Together with LED U and LOM, indicates incorrect polarity of
one phase
Green
Frequency, rotation and phases polarity are in fault-free state
Nothing
Over/under frequency is protections are not enabled by
setpoint and no other indicated failure is sensed
LOM
Red
Vector shift or ROCOF protection was indicated and Fault
reset was not yet done
Orange
flashing
Together with LED U and f, indicates incorrect phase rotation
Orange
Together with LED U and f, indicates incorrect polarity of one
phase
Nothing
None of Vector shift or ROCOF failure is detected or neither
Vector shift nor ROCOF protections are not enabled by
setpoint and no other indicated failure is sensed
Status
Red
flashing
Indication of severe internal failure. Contact ComAp technical
support!

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-17
Meaning of signalling LEDs
LED
Colour
Meaning
Orange
flashing
Indication of internal failure. Contact ComAp technical
support!
Orange
Indication of internal failure. Contact ComAp technical
support!
Green
The unit is in operation with no internal problems.
Nothing
The unit is not in operation
Alt
Orange
The function Alternative setting is activated by means of
binary switch Alt setting.
Nothing
The function Alternative setting is not activated
Dis
Orange
The unit is disabled by means of binary switch Disable
Nothing
The unit is not disabled by means of binary switch Disable
Measurement screens
Following are the examples of the measurement screens, showing values measured and evaluated by
the unit:
Main measurement screen (homepage),
3-phase application:
-U: measured voltages on terminal sets Ua, Ub and
Uc. If overvoltage or undervoltage is detected on a
particular phase, arrow symbol is displayed left of
the particular voltage value.
-f: measured frequency on terminal set Ua. If
overfrequency or underfrequency is detected, arrow
symbol is displayed left of the frequency value.
-Last Trip: indication of the latest event, which
caused trip by the MainsPro unit. See the following
chapter for trip messages explanation.
Main measurement screen (homepage), 1-
phase application (setpoint System set to
1ph):
-U: measured voltage on terminal set Ua. If
overvoltage or undervoltage is detected, arrow
symbol is displayed left of the voltage value.
-f: measured frequency on terminal set Ua. If
overfrequency or underfrequency is detected, arrow
symbol is displayed left of the frequency value.
-Last trip: indication of the latest event, that caused
trip by the MainsPro unit
Loss of mains (LOM) measurement screen:
-Max Vs: maximum value of measured Vector shift
since unit power-up or since the last reset Vector
shift trip.
-Act RCF: actual measured value of ROCOF
protection
-Max RCF: maximum value of measured ROCOF
protection since unit power-up or since the last reset
ROCOF trip.
Voltage asymmetry measurement screen:
-V asymmetry: actual value of asymmetry of effective
values measured on terminals Ua, Ub, Uc
-V negative: actual value of negative sequence
voltage
-V positive: actual value of positive sequence voltage
Negative sequence overvoltage and positive sequence
undervoltage are methods of evaluation of angle
asymmetry of the 3-phase voltage system. See more in
the chapter Voltage unbalance and angle asymmetry

MainsPro, SW version 1.4, ©ComAp –January 2013
MainsPro Installation and Operation Guide
1-18
Binary switches status screen:
-List of the assigned binary switches.
Functions that are configured are displayed in the
appropriate order.
Its status is displayed in brackets.
Relay outputs 1-4 status screen:
-Status of the first 4 MainsPro relay outputs.
Name in parenthesis marks the function assigned
by the setpoints in group f(RE).
Relay output 5 status screen:
-Status of the 5th MainsPro relay output.
Name in parenthesis marks the function assigned
by the setpoints in group f(RE).
Trip counters and indication screen:
-Last Trip: indication of the latest event, which
caused trip. See the following chapter for trip
messages explanation.
-TripCnt: total counter of MainsPro trips since the
MainsPro unit counters reset
-U: counter of overvoltage and undervoltage -related
trips
-f: counter of overfrequency and underfrequency -
related trips
-LOM: counter of Loss-of-Mains - related trips (Vector
shift and ROCOF)
-Otr: counter of trips with other reason then the
above mentioned: External trip, voltage asymmetry,
phase sequence or inverse phase polarity
Time measurement screen:
-Operation Time: time since MainsPro was powered
up*
-Last Trip Time: time of the latest trip since MainsPro
was powered-up
Please note that the time information on the MainsPro
unit is not measured by a calibrated RTC device and
may serve for orientation purposes only. Find more in
Technical data chapter.
Trip history screen
-List of last five trips - contains reason of the trip and time
since the unit was powered up
*For case of power cut off, the time stamp is stored and after the unit is powered up again, the timer will start from
the from following second after the last stored one.