Siemens 7XV75 Manuale utente
7XV75 Test Switch
1Siemens AG March 2021
7XV75 Test Switch
Notes on Safety
This catalogue contains notes that must be adhered to for your own personal safety and to avoid damage to property.
However, it does not constitute a complete description of all safety measures required for installation, service, and mainte-
nance of the equipment (module, device) in question. Details are to be taken from the device manual and those are manda-
tory.
Qualified Electrical Engineering Personnel
Only qualified electrical engineering personnel may commission and operate the equipment (module, device) described in
this document. Qualified electrical engineering personnel in the sense of this document are people who can demonstrate
technical qualifications as electrical technicians. These persons may commission, isolate, ground and label devices, sys-
tems and circuits according to the standards of safety engineering.
Use as Prescribed
The equipment (device, module) may only be used for such applications as set out in the catalogs and the technical de-
scription, and only in combination with third-party equipment recommended and approved by Siemens.
Problem-free and safe operation of the product depends on the following:
•Proper transport
•Proper operation and maintenance
•Proper storage, setup, and installation
Statement of Conformity
Further standards
IEC 60255, VDE 0435
WARNING
Danger of severe personal injury or substantial damage to property
Hazardous voltages may occur in devices and modules during operation depending on the design and appli-
cation.
Always observe the instructions given in “Qualified Electrical Engineering Personnel” below.
WARNING
Danger of death, personal injury or substantial property damage
Non-observance of the following measures can result in death, personal injury or substantial property
damage.
The equipment must be grounded at the grounding terminal before any connections are made.
If you require further information, or if particular problems occur that are not handled in sufficient depth in the instructions
of the respective product, you can request help through your local Siemens Office or representative.
Low-voltage Directive 2014/35/EU
RoHS Directive 2011/65/EU R
The conformity is based on the compliance with
the following harmonized standards
EN 50581 and EN 60255-27
7XV75 Test Switch
2 Siemens AG March 2021
Application Mode of operation
The test switch serves in the test-
ing of protection devices using
secondary injection test sets.
The following versions are in a
flush mounting case available:
•For feeder protection without an
open starpoint.
•For feeder protection without an
open starpoint and with addition-
al contacts.
•For feeder protection without an
open starpoint for two CT cores
or separate earth fault CT.
•For feeder protection with an
open starpoint.
•For feeder protection with an
open starpoint and independent
switchable trip and c.t. circuits.
•For a 3-winding transformer
differential protection.
•For feeder protection without an
open starpoint, with 4th CT and
4th VT input (three-stage test
switch)
The test device can be used with
auxiliary supplies ranging from
24 V to 250 V AC/DC. This makes
selection between varying power
supply models unnecessary.
The 7XV75 test switch serves for
testing protection devices includ-
ing C.T. circuits and command
contacts. With the help of the
switches located on the front
side, the current and voltage
inputs as well as the circuits of
the protection device to be tested
are interrupted and applied to the
plug-in connector located on the
front side. Via this plug-in con-
nector currents and voltages can
be fed by an injection test set
and the different commands and
indications can be tested.
NOTE
Grounding
The equipment must be grounded at the grounding terminal before any connections are made.
7XV75 Test Switch
7XV75 Test Switch
3Siemens AG March 2021
Technical data
General device data
Rated operating voltage Vn
Rated operating current In
Test current capacity for 1 s
for 10 s
Continuous current
Overvoltage category, IEC 60255-27
Operating Altitude
Pollution degree
Protection
250 V AC/DC
Max 5 A
150 A
60 A
20 A
III
Max 2000 m
2
Class 1
Electrical tests
Insulation tests
Voltage test (routine test and type test)
Impulse voltage test (type test)
all circuits, class III
Insulation resistance measurement
IEC 60255-27, Edition 2.0
2.5 kV; 50 Hz
5 kV (peak value); 1.2/50 μs; 0.5 J;
3 positive and 3 negative impulses at intervals of 5 s
500 V DC, For 1 min, ≥100 MOhm
Construction
Metal case
Dimension
Weight
Protection type acc. to IEC 60529
with closed cover
with open cover
for operator protection
7XP20
1/6 of 19”wide
approx. 3.4 kg
IP40
IP20
IP2x for terminals
Mechanical stress tests
Vibration and shock during operation
Vibration
IEC 60255-21-1, class II
IEC 60068-2-6
Shock
IEC 60255-21-2, class I
IEC 60068-2-27
Seismic vibration
IEC 60255-21-3, class I
IEC 60068-3-3
IEC 60255-21 and IEC 60068
Sinusoidal
10 Hz to 58 Hz: ± 0.075 mm amplitude
58 Hz to 150 Hz: 1 g acceleration
Frequency sweep rate 1 octave/min
20 cycles in 3 orthogonal axes
Semi-sinusoidal
5 g acceleration, duration 11 ms, each 3 shocks in
both directions of the 3 axes
Sinusoidal
1 Hz to 8 Hz: ± 3.5 mm amplitude (horizontal axis)
1 Hz to 8 Hz: ± 1.5 mm amplitude (vertical axis)
8 Hz to 35 Hz: 1 g acceleration (horizontal axis)
8 Hz to 35 Hz: 0.5 g acceleration (vertical axis)
Frequency sweep 1 octave/min
1 cycle in 3 orthogonal axes
Vibration and shock during transport
Vibration
IEC 60255-21-1, class II
IEC 60068-2-6
Shock
IEC 60255-21-2, class I
IEC 60068-2-27
Continuous bump
IEC 60255-21-2, class I
IEC 60068-2-29
IEC 60255-21 and IEC 60068
Sinusoidal
5 Hz to 8 Hz: ± 7.5 mm amplitude
8 Hz to 150 Hz: 2 g acceleration
Frequency sweep rate 1 octave/min
20 cycles in 3 orthogonal axes
Semi-sinusoidal
15 g acceleration, duration 11 ms, each 3 shocks in
both directions of the 3 axes
Semi-sinusoidal
10 g acceleration, duration 16 ms, each 1000 shocks
in both directions of the 3 axes
Climatic stress tests
Temperatures
Permissible temperature during service
IEC 60255-1
–20 °C to + 70 ° C
7XV75 Test Switch
4 Siemens AG March 2021
Technical data
Voltage Terminals
Recommended use of the screwed terminals
Stripping length (when used without conductor sleeve)
L = 10 mm (0,39 in) or L = 12 mm (0,47 in);
max. wire cross-section AWG 16 (1.5 mm2),
use copper conductors only
When using conductor sleeves
Geometry for terminal cells according to EN 60947-7, class A1
must be complied with.
Permissible tightening torque at the terminal screw
0.8 Nm (7.1 lb.in.)
Sleeves length (wire range)
min. 10 mm (0.39 in) (e.g. DIN 46228-E1,5-10)
Current Terminals
Recommended use of the screwed terminals
Stripping length (when used without conductor sleeve)
L = 12 mm (0,47 in) or L = 14 mm (0,55 in);
max. wire cross-section AWG 12 (4,0 mm2),
use copper conductors only
When using conductor sleeves
Geometry for terminal cells according to EN 60947-7, class A4
must be complied with.
Permissible tightening torque at the terminal screw
1,2 Nm (10.6 lb.in.)
Sleeves length (wire range)
min. 12 mm (0.47 in) (e.g. DIN 46228-E4-12)
Grounding screw
Location on protection device
Permissible tightening torque at the grounding screw
1,2 Nm (10.6 lb.in.)
Nominal Values
The nominal values shown on the name plate of the device have to be observed.
Operating Temperature
Permissible temperature range for permanent operation:
- 5 °C (BU - 10 °C (+ 10 °F)) to + 55 °C (+ 23 °F to + 131 °F)
Operating Altitude
Maximum altitude above sea level: 2000 m
Degree of Protection (acc. to IEC 60529)
For use in environment with degree of pollution 2.
7XV75 Test Switch
5Siemens AG March 2021
Connection Diagram for 7XV7500-0CA00 Test Switch
7XV75 Test Switch
6 Siemens AG March 2021
Connection Diagram for 7XV7501-0CA00 Test Switch
Typically not for distance protection or if used please consider the switch order of S1 and S2
(Operation->Test: S2 (I) –S1 (V); Test->Operation: S1 (V) –S2 (I)).
7XV75 Test Switch
7Siemens AG March 2021
Connection Diagram for 7XV7502-0CA00 Test Switch
7XV75 Test Switch
8 Siemens AG March 2021
Connection Diagram for 7XV7503-0CA00 Test Switch
Typically not for distance protection or if used please consider the switch order of S1 and S2
(Operation->Test: S2 (I) –S1 (V); Test->Operation: S1 (V) –S2 (I)).
7XV75 Test Switch
9Siemens AG March 2021
Connection Diagram for 7XV7506-0CA00 three-stage Test Switch
7XV75 Test Switch
10 Siemens AG March 2021
Connection Diagram for 7XV7507-0CA00 Test Switch
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