Siemens 7XV75 User manual

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

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

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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