This document provides information about Siemens' SIPROTEC 4 numerical protection devices. It discusses the SIPROTEC 4 family of devices, the features and capabilities of the 7UM61 protection unit, and examples of communication solutions and applications for generator, motor, and transformer protection. The training presentation explores the advantages of numerical protection and flexible communication interfaces in the SIPROTEC 4 system.

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Siemens Power Academy TD
02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 1
Presenter: Bernd Sommer
PTD EA12
Phone 0911-433-8222
Fax 0911-433-7396
email Bernd.Sommer@siemens.com
Training: Generator Protection
Machine Protection SIPROTEC 4

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 2
Generator, Motor and Transformer Protection
is part of the
SIPROTEC 4 family of
numerical
protection, control and
automation devices
by
SIEMENS

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 3
SIPROTEC 4 is the actual family of protection and control devices.
This family offers with a lot of new features a high
flexibility in applications.
The machine protection uses the advantages of this
new family.
By now the former devices V3 are sustituted by
the V4 technique.
7UM511
7UM512
7UM515
7UM516
7UT51
7UM61
7UM62
What is SIPROTEC 4?

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 4
 additional logic
NEGATOR
AND-GATTER
OR-GATTER
XOR-GATTER
TIMER
 interlocking
 processing measured values
The Integrated Configuration Tool CFC saves
external wiring

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 5
I1: 400.9A f:50.0Hz
U: 12.22kV
P :+8.03MW cos
Q :+2.64MVar
L1 402.1A Max450.1A
L2 401.2A Max421.2A
L3 401.0A Max431.4A
E 00.0A
% IL UL-E UL-L
L1 100.0 100.4 100.1
L2 100.4 100.3 100.0
L3 100.1 100.1 100.4
direct measured values: error < 0,5%
derived values: error < 1%
Voltages:
L1 - E
L2 - E
L3 - E
L1 - L2
L2 - L3
L3 - L1
Currents:
IL1
IL2
IL3
IE
IL1 MIN
IL2 MIN
IL3 MIN
IL1 MAX
IL2 MAX
IL3 MAX
Power:
P
Q
S
Counters
f
cos phi All values are accessible via the serial interface!
Comprehensive Measured Value Processing gives an
overview about the process

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 6
Pin Lugs
Solid Conductors
Ring Lugs
Robust Terminals Guarantee a Reliable Connection

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 7
Fault
Measured
Values
Counters
Param.II
Convenient and fast access to frequently
used control sequences
4 Freely Configurable Function Keys

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 8
Fibre optic
Electrical
 Exchange
 Retro-fit
 IEC 60870-5-103
 Profibus FMS
 Profibus DP
 Modbus RTU
 DNP 3
 Ethernet
IEC61850
Flexible Interfaces Open for Different Communication
Solutions

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 9
Control system
for power plants
Profibus DP
7UM622 7UM621 7UM612 7UT612
7UT613
Unit Protection
Modem
Modem
RS 485
DIGSI 4
Remote Control
Telephone Network
Annunciations
Measurands
Example for Communication

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 10
Operator control
and process
7UM622 7UM621 7UM612 7UT612
7UT613
Unit Protection
DIGSI 4
Remote Control
RS 485
Modem
Modem
Telephone Network
Control system
for power plants
Profibus DP
SICAM
IEC 60870-5-103
Annunciations
Measurands
Annunciations
Measurands
Fault records
with IEC
Example for Communication

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 11
7UM621 7UM611
7UT613
Unit Protection
7SJ63 7UM621
7SJ62
Auxilary
Switchgear
Profibus DP
Modem
Modem
RS 485
DIGSI 4
Remote Control
Telephone Network
Control system
for power plants
Profibus DP
Annunciations
Measurands
Control of AUX
Example for Communication

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 12
Operator control
and process
SICAM
IEC 60870-5-103
7UM621 7UM611
7UT633
Unit Protection
IEC 60870-5-103
Modem
Modem
RS 485
DIGSI 4
Remote Control
Telephone Network
Control system
for power plants
Profibus DP
7SJ63 7UM621
7SJ62
Auxilary Switchgear
Annunciations
Measurands
Control of AUX
Example for Communication

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 13
22Bit
ADC
22 Bit
ADC
U
I
32Bit
P
Memory
Serial
Interface
Local
HMI
BO
BI
Modern high integrated Circuits guarantees
a high Power and Reliability

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 14
Masking
Test and Diagnostics
Fault Analysis
Editing the
Graphic Display
All Siemens numerical protection devices are
operated with only one program!
Convenient Operation with DIGSI 4

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 15
7UM6, 7UT6
RS 485
 Connection of up to 2 temperature boxes to the service interface
 Electric interface RS485
 Monitoring of up to 12 temperature measurements
 Indication of temperatures as operational measured values
 Monitoring of temperature set-points for alarming
 Integration of temperature measurement for hot spot calculation (oil temperature)
External Temperature Measuring with Thermobox and
Serial Transmission

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 16
Currents on the high
and low voltage side
of the transformer
Tripping characteristic
with the settings and
actual operating points
Commissioning Support with the
Browser- Technology

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 17
+
large
medium
small
G
Generators
M
large
Induction Motors
Synchronous Motors
+
large Transformers
7UM6
The Universal Protection for

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 18
7UM611
3 x U, 1 x Ue
3 x I; 1 x Iee
7 binary inputs (6r; 1)
11 binary outputs (2r, 5r; 4)
Same functions - different number of binary inputs and outputs
7UM612 3 x U, 1 x Ue
3 x I; 1 x Iee
15 binary inputs (6r; 3r, 6)
19 binary outputs (2r, 3r, 5r; 9)
Use, where more binary inputs and outputs are required
(medium and large power plants)
r: common root
Protection Unit 7UM61 in 2 Models

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 19
Function Mix 7UM61
 Stator earth-fault prot., non-/, directional (59N, 64G, 67G)
 Sensitive eath-fault prot., rotor earth-fault prot. (50/51GN, 64R)
 Overload protection (49)
 Definite time overcurrent prot. with undervoltage seal-in (51)
 Definite time overcurrent prot., directional (50/51/67)
 Inverse time overcurrent prot. (controlled, restraint) (51V)
 Over voltage protection (59)
 Under voltage protection (27)
 Frequency protection (81)
 Reverse-power protection (32R)
 Overexcitation protection (24)
 Fuse Failure Monitor (60FL)
 External trip coupling
 Trip circuit supervision (74TC)
 Forward-power protection (32F)
 Underexcitation protection (40)
 Negative sequence protection (46)
 Circuit-breaker prot. (50BF)
 Inadvertant energization protection (50/27)
 100%-stator-earth-fault prot. with 3rd harmonics (59TN, 27TN)
 Impedance protection with I>/U<-pick-up (21)
7UM611
7UM612
A
-
Basic
B
-
Standard
C
-
Full

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 20
A - Basic: (7UM611)
Protection of small generators (<1 MW - 3 MW)
Back-up protection of parallel connected transformers
Network decoupling using CFC
B - Standard: (7UM611, 7UM612)
Protection of generators (2 MW - 5 MW)
Back-up protection of power plants(> 5 MW)
Protection of synchronous motors
C - Full: (7UM611, 7UM612)
Protection Group 2 (back-up protection)
of generators (> 5MW)
100% stator earth-fault protection (3rd harmonic)
Function Mix 7UM61 – Application

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 21
It contains all functions for the protection of medium and large
generators (> 5MW);
with differential protection; as well as supplementary functions
for large generators
It contains all functions for the
protection of large induction and synchronous
motors
It contains all functions for the protection of
transformers, especially if additional functions
are required (U, f, U0, U/f)
7UM62 - The Universal Machine Protection

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 22
Same functions - different number of binary inputs and outputs
7UM621
3 x U, 1 x Ue
6 x I; 2 x Iee
3 x Measuring Transducers
7 binary inputs (5r; 2)
12 binary outputs (5r; 7)
7UM622
3 x U, 1 x Ue
6 x I; 2 x Iee
3 x Measuring Transducers
15 binary inputs (5r; 3r, 7)
19 binary outputs (5r, 3r, 12)
Use, where more binary inputs and outputs
are required (large power plants, process of
external non-electrical signals)
r: common root
Protection Unit 7UM62 in 2 Models

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 23
Additional to the functions of
7UM61 (Standard or Full):
 Differential protection (87G/87T)
 Temperature supervision (Thermobox) (38)
 Start inhibit for motors (49Rotor)
 Rotor earth-fault protection (fn, R-measuring) (64R)
 DC-voltage protection (59N DC)
 Earth current differential protection (REF 87GN)
 Out of step protection (78)
 Overcurrent protection during start up (51)
 Rotor earth-fault protection 1 - 3 Hz-measuring (64R)
 100% stator earth-fault protection with 20 Hz (64G-100%)
 Rate-of-frequency protection df/dt (81R)
 Vector jump (voltage)
Trafo
+
7UM
61
Stand.
Motor
+
7UM
61
Stand.
Geno
Basic
+
7UM61
Stand.
Geno
Standard
+
7UM
61
Full
Geno
Full
+
7UM61
Full
Options
to
all
functions
7UM621
7UM622
Function Mix 7UM62

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 24
H - Transformer 7UM62 (incl. 7UM61 Standard):
Main protection for large transformers with
additional functions
Parallel connected transformers
B - Generator Standard 7UM62 (incl. 7MU61 Full):
Main protection for generators > (5 - 10) MW
Back-up protection for power plants
F - Asynchronous Motor 7UM62 (incl. 7UM61 Standard):
Main protection for induction motors > 1 MW
A - Generator Basic 7UM62 (incl. 7UM61 Standard):
Main protection for generators > (2 -5) MW
Main protection for synchronous motors
C - Generator Full 7UM62 (incl. 7MU61 Full):
Main protection for large generators > 50 MW
Back-up protection for power plants
Function Mix 7UM62 – Application

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 25
7UT612
 7 x I (1A, 5A, 0,1A), 1 x Iee
 3 binary inputs (2r; 1)
 4 binary outputs (4)
 System interface
 IEC 60870-5-103
 Profibus FMS
 Profibus DP
 DNP3.0
 Modbus ASCII/RTU
 Service interface
 DIGSI4 operation
 Modem connection
 Temperature box
 Time synchronisation
 Front service interface
r: common root
Differential Protection 7UT612

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 26
7UT612
 Differential prot. for two terminal, 3-phase prot. objects (87) Transformer,
auto transformer, generator/motor, small busbar
(3-phase), busbar (single phase),
 Differential earth fault prot. (87N)
 Definite time/IDMT phase over current (50/51)
 Definite time/IDMT earth over current 3I0 (50/51N)
 Definite time/IDMT earth over current (50/51G)
 Definite time single phase over current prot. (suitable for high impedance
circulating current prot. (87GD), tank prot.)
 Overload prot. with thermal image according to IEC60255-8 (49)
 Hot spot calc. with determination of the relative rate of aging according to
IEC60354
 Coupling of external signals
 Trip circuit supervision (74TC)
 Negative sequence protection (46)
 Breaker failure protection (50BF)
 Operational measured values, fault recording
Scope of Functions 7UT6

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 27
*) in preparation
 7UT612 for 2-terminal protected objects -
 7 x I (1A, 5A, 0,1A), 1 x Iee
 3 binary inputs, 4 binary outputs, 1 life-contact
 7UT613 for 3-terminal protected objects *)
 11 x I (1A, 5A), 1 x Iee
 5 binary inputs, 7 binary outputs, 1 life-contact
 7UT633 for 3-terminal protected objects *)
 11 x I (1A, 5A), 1 x Iee, 3 x Uph, 1 x Ue
 21 binary inputs, 23 binary outputs, 1 life-contact
 7UT635 for 5-terminal protected objects *)
 16 x I (1A, 5A, 0,1A), 1 x Iee, 3 x Uph, 1 x Ue
 21 binary inputs, 15 binary outputs, 1 life-contact
7UT6xx - Family, Hardware Variants

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 28
 Large frequency range from 11Hz to 69 Hz;
high measuring accuracy (U,I <0,5%; S< 1%, f<10 mHz)
 All implemented protection functions run in parallel with
out limitation (functionality depends on the connection)
 International protection standards (IEC, ANSI)
 Disturbance recorder with instantaneous or rms values
(calculated values, every cycle; length max. 80 s)
 Commissioning aids (check of BI, BO, separate blocking
of the TRIP command during primary test for each function)
 Application focused selection of protection functions
Highlights 7UM61 / 7UM62

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02 Machine Protection SIPROTEC 4
Using numerical machine and motor protection
Version: C 3_Page 29
 Hardware and software based on SIPROTEC 4
 Fundamental adoption of proven algorithms from 7UM5x
 Extension and new combination of protection functions
 The implemented functions fulfil the protection requirements for
direct connection and unit connection schemes
 With the of combination 7UM61, 7UM62, 7UT61, 7UT 63 as well as
7SJ6 flexible redundancy concepts can be achieved
 The communication with control systems is realized with e.g.
Profibus DP (annunciations and measurements)
 Price scaling of devices through function splitting
Summary