Siemens 7XT3300-0 A00/DD Series User manual

7XT3300-0*A00/DD
Copyright Siemens AG 2009
Manual / Руководство Order No / Номер заказа: C53000-B119U-C129-1
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20-Hz-Generator
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уководство по эксплуатации
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7
Генератор напряжения 20 Гц

English / Русский 7XT3300-0*A00/DD
2C53000-B119U-C129-1
Rear side of 20-Hz-Generator 7XT3300-0*A00/DD
Задняя панель генератора напряжения 20 Гц 7XT3300-0*A00/DD

7XT3300-0*A00/DD English
C53000-B119U-C129-1 3
Contents
Statement of Conformity ................................................................................................... 4
Notes and Warnings .......................................................................................................... 4
Unpacking and Re-packing ............................................................................................... 6
Storage and Transport ...................................................................................................... 6
Application ......................................................................................................................... 7
Function Description ......................................................................................................... 7
Jumper and Fuses on the Printed Circuit Boards ........................................................... 11
Dimensions ..................................................................................................................... 13
Installation Hints .............................................................................................................. 15
Technical Data ................................................................................................................ 17
General Diagram ............................................................................................................. 23
Connection Examples ..................................................................................................... 24
Order Information ............................................................................................................ 25

English 7XT3300-0*A00/DD
4C53000-B119U-C129-1
Statement of Conformity
This product complies with the directive of the Council of the European Communities on the
approximation of the laws of the member states relating to electromagnetic compatibility
(EMC Council Directive 2004/108/EC) and concerning electrical equipment for use within
specified voltage limits (Low-voltage Directive 2006/95/EC).
This conformity has been proved by tests performed according to the Council Directive in
agreement with the generic standards EN 61000-6-2 and EN 61000-6-4 (for EMC directive)
and with the standards EN 60255-6 (for low-voltage directive) by Siemens AG.
The device is designed and manufactured for application in industrial environment.
The product conforms with the international standards of IEC 60255 and the German
standards VDE 0435.
Notes and Warnings
The warnings and notes contained in this booklet serve for your own safety and for an
appropriate lifetime of the device. Please observe them!
The following terms are used:
DANGER
indicates that death, severe personal injury or substantial property
damage will result if proper precautions are not taken.
Warning
indicates that death, severe personal injury or substantial property
damage can result if proper precautions are not taken.
Caution
indicates that minor personal injury or property damage can result if
proper precautions are not taken. This is especially valid for damage on
or in the device itself and consequential damage thereof.

7XT3300-0*A00/DD English
C53000-B119U-C129-1 5
QUALIFIED PERSONNEL
For the purpose of this manual and product labels, a qualified person is one who is familiar
with the installation, construction and operation of the equipment and the hazards involved.
In addition, he has the following qualifications:
Is trained and authorized to energize, de-energize, clear, ground and tag circuits and
equipment in accordance with established safety practices.
Is trained in the proper care and use of protective equipment in accordance with
established safety practices.
Is trained in rendering first aid.
Note
indicates information about the device or respective part of this booklet
which is essential to highlight.
Warning!
Hazardous voltages are present in this electrical equipment during
operation. Non-observance of the safety rules can result in severe
personal injury or property damage.
Only qualified personnel shall work on and around this equipment after
becoming thoroughly familiar with all warnings and safety notices of this
booklet as well as with the applicable safety regulations.
The successful and safe operation of this device is dependent on proper
transport and storage, proper handling, installation, operation, and
maintenance by qualified personnel under observance of all warnings
and hints contained in this booklet.
In particular the general erection and safety regulations (e.g. IEC, EN,
DIN, VDE, or other national and international standards) regarding the
correct use of hoisting gear must be observed. Non-observance can
result in death, personal injury or substantial property damage.

English 7XT3300-0*A00/DD
6C53000-B119U-C129-1
Unpacking and Re-packing
When dispatched from the factory, the equipment is packed in accordance with the
guidelines laid down in IEC 60255-21 which specify the impact resistance of packaging.
This packing shall be removed with care, without force and without the use of inappropriate
tools. The equipment should be visually checked to ensure that there are no external traces
of damage.
Please observe absolutely all notes and hints which may be enclosed in the packaging.
Before initial energization with supply voltage, or after storage, the device shall be situated
in the operating area for at least two hours in order to ensure temperature equalization and
to avoid humidity influences and condensation.
For further transport, the transport packing can be re-used when applied in the same way.
The storage packing of the individual relays is not suited for transport. If alternative packing
is used, this must also provide the same degree of protection against mechanical shock and
vibration as laid down in IEC 60255-21-1 class 2 and IEC 60255-21-2 class 1.
Storage and Transport
The device should be stored in dry and clean rooms. The limit temperature range for storage
of the relays or associated spare parts is -25 °C to +55 °C, corresponding to -13 °F to 131 °F.
The relative humidity must be within limits such that neither condensation nor ice forms.

7XT3300-0*A00/DD English
C53000-B119U-C129-1 7
Application
The 20-Hz generator 7XT33 is used in combination with the bandpass 7XT34 in the machine
protection (7UM62). In order to implement a 100 % stator earth fault protection, it provides
the source for injection into the generator starpoint. Injection can be performed by
connecting the 7XT33 and the 7XT34 to the load resistor of an earthing or neutral
transformer. The 100 % stator earth fault protection detects earth faults in the stator windings
of generators which are connected with the network via a unit transformer. The protection
device working with the 7XT33 detects earth faults in all windings including the machine
starpoint. The measuring principle used is not influenced at all by the generator’s operation
and allows measurements even with the generator at standstill.
Function Description
Basic Principle
The 7XT33 injects into the generator starpoint a voltage of max. 1 % of the rated generator
voltage. If an earth fault occurs in the generator starpoint, the 20 Hz voltage drives a current
through the fault resistance. From the driving voltage and the fault current, the protective
relay determines the fault resistance. The protection principle described here also detects
earth faults at the generator terminals, including connected components such as voltage
transformers.
Figure 1 Basic principle of voltage injection into the generator starpoint
Note
The 7XT33 is always used in combination with the 7XT34.

English 7XT3300-0*A00/DD
8C53000-B119U-C129-1
Auxiliary Voltage Supply
The auxiliary voltage of the 7XT33 can be supplied either by a 3-phase current or by the
direct voltage of a station battery. For a commissioning test, which is limited in time, the
7XT33 can also be powered by a single-phase alternating voltage.
Function of the 20-Hz Generator
The 7XT33 provides a rectangular output voltage with a frequency of 20 Hz. The voltage
r.m.s. value is 25 V under load.
The binary input (terminal points 6, 8) can be used to block the 20-Hz generator. The
blocking function via the binary input is activated, once the input signal has been provided
for 500 ms. Afterwards, the output module is switched off, the red LED (ERROR) lights up
and the “Life contact“ relay drops out (idle state).
The device features the following monitoring functions:
When the auxiliary voltage is switched on or the device is restarted, an auxiliary voltage
threshold of approx. 80 V must be exceeded before the 20-Hz output signal is generated
and the “Life contact“ relay picks up. Within this time, the green LED (RUN) is flashing.
The blocking function via the binary input is not active during this time.
If the internal device voltage drops due to an external short-circuit (e.g., between the
7XT33 and the 7XT34) or an inadmissible output overload, the 7XT33 will be protected
by turning off the output module. The “Life contact“ relay drops out (idle state) and the
ERROR LED lights up. After a delay of approx. 60 s, the device attempts to restart. The
ERROR LED keeps flashing during the restart. If the fault has not been eliminated, the
ERROR LED lights up and the device attempts to restart after a delay. This procedure is
repeated until the fault is eliminated. If the internal device voltage is provided again, the
device restarts automatically.
If the 20-Hz output voltage is lower than 17 V, e.g., in the event of a short-circuit, or higher
than 73 V under operating conditions (internal device voltage within the permissible
range), the output module is switched off, the “Life contact“ relay drops out and the
ERROR LED lights up. An overvoltage of more than 73 V might be an interference
voltage on the generator side.
Note
If the 3-phase current supply is implemented by connection to a 3-
phase voltage transformer, please make sure that the transformer is
powerful enough. Recommendation: more than 100 VA.

7XT3300-0*A00/DD English
C53000-B119U-C129-1 9
Table 1 below gives an overview of all operating states and signals.
Figure 2 Position of the ERROR and RUN LEDs on the front and back panel
Table 1 Operating states and signals
LED red
„ERROR“
LED green
„RUN“
Description Condition of
Life contact
relay
Output of
20-Hz signal
OFF ON Device is ready for operation picked up Yes
ON OFF Device is not ready for opera-
tion or blocked via binary input
dropped out No
OFF Flashing Power supply < 80 V dropped out No
Flashing OFF Restart dropped out No
OFF OFF Device is off dropped out No
ERROR RUN RUN ERROR
Front Side Rear Side

English 7XT3300-0*A00/DD
10 C53000-B119U-C129-1
Control Voltage for Blocking Input
The blocking input is set to the pick-up threshold of DC 88 V on delivery. For the control
voltages DC 24/48/60 V, jumper S1 on the control module (C53207-A332-B2-, see figure 4)
must be used to reduce the pick-up threshold to DC 19 V (X401-X402).
Table 2 Blocking input
Control voltage range DC 24 V to DC 250 V, bipolar
Current consumption, energized approx. 1.8 mA, independent of control vol-
tage
Pick-up thresholds selectable with jumper S1, see figure 4
for control voltages DC 24/48/60 V Uhigh ≥DC 19 V
Ulow ≤DC 10 V
for control voltages DC 110/125 V
DC 220/250 V
Uhigh ≥DC 88 V
Ulow ≤DC 44 V
Maximum permissible voltage DC 300 V
Impulse filter on input Signal must be provided 500 ms
Table 3 Jumper S1
For control voltages DC 24/48/60 V Jumper in position “X401-X402”
(pick-up threshold DC 19 V)
For control voltages DC 110/125/
220/250 V
Jumper in position “X402-X403”
(pick-up threshold DC 88 V)

7XT3300-0*A00/DD English
C53000-B119U-C129-1 11
Jumper and Fuses on the Printed Circuit Boards
Power supply module C53207-A332-B12- of 7XT3300-0*A00/DD
Figure 3 Power supply module with location of the fuses
F301
F102
F101
F103
F602
F601
F401
4AT *)
5A
5A
4AT *)
4AT *)
Fusible cut-out insert 4AT, type 5 x 20 mm
a) Schurter 0001.2510
b) Siba 179200 4A
c) SOC SHV12 4A
Fusible cut-out insert 5AT
a) Schurter OMK 125 3404.2317.11
b) Littelfuse Series 154 154.005
Note: Replace the fuse only by the original type
because the holders are designed for this type
only.
*)
NZT
C53207-A332-B12-
The fusible link inserts must be replaced only by
the types mentioned. If other types are used, the
parameters and properties given for the device
no longer apply .

English 7XT3300-0*A00/DD
12 C53000-B119U-C129-1
Control module C53207-A332-B2- of 7XT3300-0*A00/DD
Figure 4 Control module with location of the jumper
S1
H102 H103
X 401
X 402 88 V (D efault setting )
19 V
X 403
STBG
C53207-A332-B2-

7XT3300-0*A00/DD English
C53000-B119U-C129-1 13
Dimensions
7XT33 Housing for Surface Mounting Version
Figure 5 Dimensions of 7XT33 surface mounting version
209.5 (8.23) 34 (1.34)
266 ( 10 .47 )
24 4 ( 9 .60 )
Side View
Mounting Holes of
Mounting Plate
Rear View
200 ±0 .3 (7 .87 ±0 .01 )
12 .5
(0.49)
6.4
(0.25) 300 ±0.3 (11.81 ±0.01)
225 (8 .86 )
220 (8 .66 )
100 ±0 .3
(3.93 ±0.01)
3 12 .8 (1 2.2 8)
Ø4 .5 (0 .16 ) or M 5
RUN ERROR
Mounting Plate
Dimensions in mm
Values in Brackets in Inches

English 7XT3300-0*A00/DD
14 C53000-B119U-C129-1
7XT33 Housing for Panel Flush Mounting or Cubical Installation
Figure 6 Dimensions of 7XT33 panel flush mounting or cubical installation
resp.
Ø6 (0.24)
172 (6.77 )
29 .5
(1 .16 )
34
(1.34)
266 (10 .47 )
24 4 ( 9 .60 )
Side View
resp.
Ø5 (0.20) or M4
Panel cut-out
Front View
180 ± 0.5 ( 7.09 ±0. 02)
7.3
(0.29)
13 .2
(0 .52 )
5 ,4 2 45 + 1 ( 9. 65 +0 .04 )
25 5.8 ±0 .3 (1 0.0 7 ±0. 01)
221 + 2 (8. 70 + 0.08 )
220 (8 .66 )
225 (8 .86 )
206 .5 ±0. 3 (8. 13 ±0 .01 )
Mounting Plate
ERROR RUN
Dimensions in mm
Values in Brackets in Inche
s

7XT3300-0*A00/DD English
C53000-B119U-C129-1 15
Installation Hints
Screw-Type Terminals of the Connector Block
Use a conductor of at least 2.5 mm² to connect the device to protective or functional earth in
a low-resistance and low-inductance manner!
Use the screw-type terminals for connection and make sure you observe the marks, the
permissible cross-sections and bending radii.
The screw-type terminals on the 12-pin terminal block on the housing are loose on delivery.
Figure 7 Screw-type terminals on the 12-pin terminal block
Table 4 Terminal block
Note
For electromagnetic compatibility reasons you must twist the line pair
with about 20 turns between the 7XT33 (clamps 11/12) and the 7XT34
(clamp 1B4), see Figure 10. The line must not be longer than 35 cm in
the twisted condition.
Connector Designation
1 Auxiliary voltage, L1 (UH+)
2 Auxiliary voltage, L2 (UH-)
3 Auxiliary voltage, L3
4Earth,PE
5 Life contact, L+
6 Blocking input (+), binary
7 Life contact, ERROR
8 Blocking input (-), binary
9 Life contact, RUN
10 reserved
11 20-Hz output, A
12 20-Hz output, B
12-pole Screw-type terminal 2
Screw-type terminal 1

English 7XT3300-0*A00/DD
16 C53000-B119U-C129-1
Connection Data
If fork-type cable lugs or connector sleeves are used, the crimp zone must be insulated to
comply with the required insulating clearance. This can also be done using shrink-on sleeve.
The following data must be met:
Cable lugs for bolt diameter 4 mm;
max. major diameter 10 mm;
for cross-section from 1.0 mm2to 2.6 mm2; resp. AWG 16 to AWG 14.
The cross-section on outputs 11 / 12 must be 2.5 mm2.
Use copper conductors only!
Recommended cable lugs series PIDG of Messrs. Tyco Electronics AMP, e.g.
ring-type cable lug PIDG PN 320565-0,
fork-type cable lug PIDG PN 321233-0.
Direct connection with solid bare wire or flexible wire with end sleeves;
for cross-section from 0.5 mm2to 2.6 mm2; AWG 20 to AWG 14.
When using one single conductor, the conductor end must be inserted such that it will be
drawn into the contact cavity while tightening the screw.
Use copper conductors only!
Wire strip length solid bare wire 9 mm to 10 mm or 0.354 in or 0.394 in.
max. torque value 1.8 Nm or 16 in-lb.

7XT3300-0*A00/DD English
C53000-B119U-C129-1 17
Technical Data
Auxiliary Voltages
Voltage supply via extended range power supply unit
DC Voltage
AC Voltage
Power consumption on 8 Ωimpedance ≤100 VA
(8 Ω= series resistance of the 7XT34 with 20 Hz)
20-Hz Output Voltage
Terminal points 11 and 12
Output voltage 26 V ±5 %, rectangular, 20 Hz ±0.1 Hz
Power output, permanently 100 VA over all ranges
Efficiency with 8 Ωapprox. 76 %
Blocking Input
Terminal points 6 and 8
Switching threshold adjustable voltage range with jumper
- for control voltages24/48/60 V DC 19 V: Uhigh ≥ DC 19 V, Ulow ≤ DC 10 V
- for control voltages110/125/220/250 V DC 88 V: Uhigh ≥ DC 88 V, Ulow ≤ DC 44 V
Permissible voltage, continuous DC 300 V
Nominal auxiliary DC voltage UH- DC 110 V to DC 220 V
Permissible DC voltage range DC 88 V to DC 250 V
Nominal auxiliary AC voltage UH~, three-phase 3 x AC 100 V to AC 120 V
Nominal auxiliary AC voltage UH~, single-phase AC 100 V to AC 120 V
Permissible DC voltage range AC 88 V to AC 130 V
Bridging time for failure auxiliary voltage UH-
(DC 110 V) / short-circuit
≥ 50 ms with rated load (at connected
bandpass 7XT34)
Note
AC 230 V is permissible for commissioning only, which is limited in
time.
Note
Output is not resistant to short-circuits!

English 7XT3300-0*A00/DD
18 C53000-B119U-C129-1
Life contact
Terminal points 5, 7 and 9
Switching capacity MAKE/BREAK 30 W/VA
Switching voltage for ≤30 s DC 250 V
Permissible currentMAKE 5 A
Permissible currentBREAK 3 A
Permissible Ambient Temperatures
with RL < 5 Ω≤55 °C or ≤131 °F
with RL > 5 Ω≤70 °C or ≤158 °F
Note
RLdescribes the load resistance at the bandpass 7XT34 output (see
figure 10).

7XT3300-0*A00/DD English
C53000-B119U-C129-1 19
Electrical Tests
Specifications
Insulation tests
EMC tests for immunity (type tests)
Standards IEC 60255 (product standards)
IEEE Std C37.90.0/.1/.2
VDE 0435
For more standards, see individual tests.
Standards IEC 60255-5 and IEC 60870-2-1
High-Voltage Test (routine test) DC 3.5 kV
Impulse Voltage Test (type test)
all circuits, Class III
5 kV (peak value); 1.2/50 μs; 0.5 J;
3 positive and 3 negative pulses at intervals
of 5 s
Standards IEC 60255-6 and -22, (product standards)
EN 61000-6-2 (basic specification)
VDE 0435 Part 301DIN VDE 0435-110
High-Frequency Test
IEC 60255-22-1, Class III
and VDE 0435 Part 303, Class III
2.5 kV (peak value); 1 MHz; τ= 15 μs;
400 pulses per s; test duration 2 s; Ri= 200 Ω
Electrostatic Discharge
IEC 60255-22-2, Class IV
and IEC 61000-4-2, Class IV
8 kV contact discharge; 15 kV air discharge;
both polarities; 150 pF; Ri= 330 Ω
Irradiation with HF Field, Frequency Sweep
IEC 60255-22-3, Class III
IEC 61000-4-3, Class III
10 V/m; 80 MHz to 1000 MHz; 80 % AM;
1 kHz
10 V/m; 800 MHz to 960 MHz; 80 % AM;
1kHz
10 V/m; 1.4 GHz to 2.7 GHz; 80 % AM; 1 kHz
Irradation with HF Field, Single Frequencies
IEC 60255-22-3, IEC 61000-4-3, Class III
- amplitude-modulated
- pulse-modulated
10 V/m
80; 160; 450; 900 MHz; 80 % AM; 1kHz;
closing time > 10 s
900 MHz; 50 % PM, repetition frequency
200 Hz
Fast Transient Disturbance Variables /
Burst IEC 60255-22-4 and IEC 61000-4-4,
Class IV
4 kV; 5/50 ns; 5 kHz; burst length = 15 ms;
repetition rate 300 ms; both polarities;
Ri= 50 Ω; test duration 1 min

English 7XT3300-0*A00/DD
20 C53000-B119U-C129-1
EMC tests for noise emission (type tests)
High-Energy Surge Voltages (SURGE),
IEC 61000-4-5 Installation Class 3
- Auxiliary voltage
- Analog measuring inputs, binary inputs
and relay outputs
Pulse: 1.2/50 μs
Common mode: 2 kV; 12 Ω; 9 μF
Diff. mode: 1 kV; 2 Ω; 18 μF
Common mode: 2 kV; 42 Ω; 0.5 μF
Diff. mode: 1 kV; 42 Ω; 0.5 μF
Line-Conducted HF, Amplitude-modul.
IEC 61000-4-6, Class III
10 V; 150 kHz to 80 MHz; 80 % AM; 1 kHz
Power System Frequency Magnetic Field
IEC 60255-6
IEC 61000-4-8, Class IV
0.5 mT; 50 Hz,
30 A/m; continuous; 300 A/m for 3 s; 50 Hz
Oscillatory Surge Withstand Capability
IEEE Std C37.90.1
2.5 kV (peak value); 1 MHz; τ= 15 μs;
400 pulses per s; test duration 2 s; Ri= 200 Ω
Fast Transient Surge Withstand Cap.
IEEE Std C37.90.1
4 kV; 5/50 ns; 5 kHz; burst length = 15 ms;
repetition rate 300 ms; both polarities;
Ri= 50 Ω; test duration 1 min
Radiated Electromagnetic Interference
IEEE Std C37.90.2
35 V/m; 80 MHz to 1000 MHz
Damped Oscillations IEC 61000-4-18 2.5 kV (peak value), polarity alternating
100 kHz, 1 MHz,
Ri= 200 Ω
Standard EN 61000-6-4 (basic specification)
Radio Noise Voltage to lines, only Power
Supply Voltage IEC-CISPR 11
150 kHz to 30 MHz
Limit value class A
Radio Interferance Field Strength
IEC-CISPR 11
30 MHz to 1000 MHz
Limit value class A