Protecta TRIP+4201 User guide

PROTECTION,AUTOMATION AND
CONTROL FOR POWER INDUSTRY
DOCUMENT ID: PP-13-21875
LAST VERSION:1.2
2019-08-07,BUDAPEST
Trip Circuit Supervision (TCS)
in EuroProt+ devices
ANSI: 74
APPLICATION GUIDE

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VERSION INFORMATION
VERSION INFORMATION
VERSION
DATE
MODIFICATION
COMPILED BY
1.0
2019-03-11
First edition
Erdős
1.1
2019-05-10
Notes for parallel-connected circuits added
Erdős
1.2
2019-08-07
Additional technical data, withstand voltage
raised for TRIP+/2101, corrections
Erdős

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CONTENTS
CONTENTS
1Introduction........................................................................................................................... 5
1.1 Operation principle ........................................................................................................5
1.2 Applicable modules ....................................................................................................... 5
2Hardware application............................................................................................................6
2.1 Wiring ............................................................................................................................ 6
2.1.1 3-wire TRIP+ wiring methods................................................................................6
2.1.2 2-wire TRIP+ wiring methods................................................................................7
2.2 TCS signal handling ......................................................................................................8
2.3 Technical data ............................................................................................................... 9
3Software application ...........................................................................................................10
3.1 Binary inputs................................................................................................................10
3.2 The TCS macro ...........................................................................................................10
3.2.1 Binary input signals ............................................................................................. 11
3.2.2 Binary output signals ...........................................................................................11

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Trip Circuit Supervision (TCS) in EuroProt+ devices
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USED SYMBOLS
USED SYMBOLS
Additional information
Useful information for settings.
Important part for proper usage.

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Trip Circuit Supervision (TCS) in EuroProt+ devices
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INTRODUCTION
1 Introduction
This document describes the applicable hardware and provides guidelines for usage in the device
configuration.
1.1 Operation principle
The trip circuit supervision is utilized for checking the integrity of the circuit between the trip coil
and the tripping output of the protection device.
This is realized by injecting a small DC current (around 1-5 mA) into the trip circuit. If the circuit is
intact, the current flows, causing an active signal to the opto coupler input of the trip contact.
The state of the input is shown on the devices’ binary input listing among the other binary inputs,
and it can be handled like any other of them (it can be added to the user logic, etc.)
1.2 Applicable modules
The following modules contain trip outputs with trip circuit supervision. The information here is
restricted to the trip circuit supervision only. For more details please refer to the EuroProt+
Hardware description from which these were extracted. Note that there are other modules without
trip circuit supervision, those are not listed here.
Table 1-1 Modules with Trip Circuit Supervision
MODULE TYPE
TRIP+4201
TRIP+2101
TRIP+2201
PSTP+4201
PSTP+2101
CHANNEL NUMBER
4
4
4
2
2
RATED VOLTAGE
24 V DC and
48 V DC
110 V DC
220 V DC
24 V DC and
48 V DC and
60 V DC
110 V DC and
220 V DC
THERMAL
WITHSTAND
VOLTAGE
72 V DC
150 V DC
242 V DC
72 V DC
242 V DC
Figure 1-1 I/O arrangement of the modules with TCS

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HARDWARE APPLICATION
2 Hardware application
2.1 Wiring
The wiring of these modules can be 2-wire or 3-wire. The TCS –Trip Circuit Supervision function
is active with both methods.
The voltage of the "No" contact is maximized at 15 V by a Zener-diode. Make sure that the voltage
caused by the resistance of the circuit breaker and the injected current from the TRIP+ module
does not reach 10 V. In case of PSTP+ modules, this voltage is 8 V (PSTP+/4201) and 13 V
(PSTP+/2101).
Our TRIP+ modules are made to switch DC circuits. Using reversed polarity or AC voltage can
cause the damage of the internal circuits.
2.1.1 3-wire TRIP+ wiring methods
Figure 2-1 3-wire TRIP+ wiring
It is possible to use parallel connected TRIP+ modules. In this case the negative contacts must
be common.
Figure 2-2 3-wire TRIP+ wiring using parallel connected TRIP+ modules
R
TCS
(TRIP Circuit
Supervision)
–
TRIP+ module
–
Circuit breaker
+
No
–
+
–
R
TCS
(TRIP Circuit
Supervision)
R
TCS
(TRIP Circuit
Supervision)
–
Circuit breaker
TRIP+ module
TRIP+ module
+
No
–
A+
+
No
–
B+

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HARDWARE APPLICATION
2.1.2 2-wire TRIP+ wiring methods
If it is necessary, you can also wire the TRIP+ modules using only the “+” and the “No” contacts.
Figure 2-3 2-wire TRIP+ wiring
It is possible to use parallel connected TRIP+ modules.
Figure 2-4 2-wire TRIP+ wiring using parallel connected TRIP+ modules
–
R
TCS
(TRIP Circuit
Supervision)
+
Circuit breaker
TRIP+ module +
No
R
TCS
(TRIP Circuit
Supervision)
R
TCS
(TRIP Circuit
Supervision)
B+
TRIP+ module
TRIP+ module
–
Circuit breaker
+
No
A+
+
No

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HARDWARE APPLICATION
If the circuit breaker needs two-pole switching, TRIP+ modules can be connected series as you
can see in Figure 2-5.
Figure 2-5 2-wire TRIP+ wiring using series connected TRIP+ modules
2.2 TCS signal handling
The Trip Circuit Supervision detects broken trip circuit if the current flowing through the trip coil is
below 1 mA or (in case of 3-wire wirings) the voltage on it is above 8-10-13 V (depending on the
module).
In Chapter 2.3 there are calculated maximum values for the resistance of the trip coil. If these
values are exceeded, the TCS might consider the trip circuit broken even if it is intact.
To solve this, there are two ways:
a) Using the 2-wire wiring method*: leaving out/disconnecting the DC- part of the TRIP
wiring may solve the issue.
Note that in this case the voltage is not maximized on 15 V, so the used voltage (up to
220 Vdc) will appear on the “NO” pin. Caution is advised when touching the wiring in
this case.
b) Usage of modules without TCS: if the TCS is not a requirement (e.g. in backup
protections), it can be simply left out by opting for the appropriate modules (such as
PSTP+/2131 or TRIP+/21F1) while ordering.
*The inputs of some relay testers might sense the states of the Trip contacts active even if they
are not. In such cases the “–“ pin must be wired in for the tests.
R
TCS
(TRIP Circuit
Supervision)
+
R
TCS
(TRIP Circuit
Supervision)
No
–
+
TRIP+ module
Circuit breaker
TRIP+ module
No
+

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HARDWARE APPLICATION
2.3 Technical data
The following tables contain information according to the wiring connections described in
Chapter 2.1.
Table 2-1 Technical data for the TRIP+ modules
MODULE TYPE
TRIP+4201
TRIP+2101
TRIP+2201
VALUE OF R
RESISTOR (± 10 %)
10 kΩ
73 kΩ
130 kΩ
INJECTED CURRENT
AT “NO” CONTACT
2.4 mA @ 24 V DC
4.8 mA @ 48 V DC
1.5 mA @ 110 V DC
1.7 mA @ 220 V DC
MAXIMUM
RESISTANCE
OF THE TRIP
COIL
3-WIRE WIRING
(MAX.10 V)
11.8 kΩ @ 24 V DC
3.7 kΩ @ 48 V DC
9.7 kΩ @ 110 V DC
8.4 kΩ @ 125 V DC
8.1 kΩ @ 220 V DC
3-WIRE WIRING WITH
IN PARALLEL
(MAX.10 V)
5.9 kΩ @ 24 V DC
1.8 kΩ @ 48 V DC
4.8 kΩ @ 110 V DC
4.2 kΩ @ 125 V DC
4 kΩ @ 220 V DC
2-WIRE METHOD
(1 mA MIN.
CURRENT)
14 kΩ @ 24 V DC
38 kΩ @ 48 V DC
37 kΩ @ 110 V DC
52 kΩ @ 125 V DC
90 kΩ @ 220 V DC
The PSTP+ modules work based on current generator principle, so the calculations for these are
based on the necessary minimum current and the allowed maximum voltage.
Table 2-2 Technical data for the PSTP+ modules
MODULE TYPE
PSTP+4201
PSTP+2101
INJECTED CURRENT
AT “NO” CONTACT
1.5 mA
1.5 mA
MAXIMUM
RESISTANCE
OF THE TRIP
COIL
3-WIRE WIRING
(1 mA CURRENT)
8 kΩ
(max. 8 V)
13 kΩ
(max. 13 V)
3-WIRE WIRING
IN PARALLEL
4 kΩ
(max. 8 V)
6.5 kΩ
(max. 13 V)
2-WIRE METHOD
(1 mA MIN.
CURRENT)
24 kΩ @ 24 V DC
48 kΩ @ 48 V DC
60 kΩ @ 60 V DC
110 kΩ @ 110 V DC
220 kΩ @ 220 V DC

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SOFTWARE APPLICATION
3 Software application
3.1 Binary inputs
The TCS input is active if the trip circuit is intact, so the logical ‘0’ or FALSE signal of the input
means that either the trip circuit is broken, or it connects to high resistance.
The TCS signals are shown the same way as other binary inputs are in the device: they can be
seen in the on-line data menu on the local HMI or the device web page, and they can be utilized
just like any other binary input when editing the device configuration with EuroCAP software.
The names/titles of the inputs follow the occupied slot of the TRIP module (if it is in Slot N, the
TCS contact is named BIn_N##).
3.2 The TCS macro
In most cases the trip circuit is tripped along with the circuit breaker as well. In situations like this
the TCS input would signal a broken trip circuit (logical ‘0’ or FALSE) unnecessarily. To avoid this,
the status signals of the CB are to be used combined with the TCS input signal so that it will be
evaluated only when the CB is closed.
The TCS macro incorporates this logic for two separate TCS inputs for one CB (see Figure 3-2
for the two TCS inputs and the CB status signal inputs). The outputs are the failure signals for
each connected TCS input.
Figure 3-1 Graphic appearance of the Trip Circuit Supervision macro
The internal logic of the macro can be seen on Figure 3-2 below. Both outputs have a fixed pick
delay of 1000 ms. Note that here the outputs are active if the trip circuit is broken. For a CB
with only 1 trip circuit it is enough to simply leave the TCS2 input open (naturally in this case the
TC_Failure2 output cannot be used).
Figure 3-2 Internal logic of the Trip Circuit Supervision macro

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SOFTWARE APPLICATION
3.2.1 Binary input signals
The following table explains the binary input signals of the macro.
Table 3-1 Binary input signals of the Trip Circuit Supervision macro
BINARY INPUT SIGNAL
EXPLANATION
TCS1
Connect here the first TCS binary input
TCS2
Connect here the second TCS binary input
stValOff
CB Off/Open signal
stValOn
CB On/Closed signal
3.2.2 Binary output signals
The following table explains the binary output signals of the macro.
Table 3-2 Binary output signals of the Trip Circuit Supervision macro
BINARY OUTPUT SIGNAL
EXPLANATION
TC_Failure1
Failure on the first circuit
TC_Failure2
Failure on the second circuit
Note that these are the outputs of a macro, and not a function block, so they must be connected
to a physical or a logical output (ConnOut, create status) to make them usable in other parts of
the configuration. For further information please refer to the EuroCAP software description.