Areva WS Series User manual

AREVA T&D
Technical Instructions
WS
Gas-Insulated switchgear
up to 36 kV
Operating Instructions
No. AGS 531 591-01
Edition 09/06
>>
GAS-INSULATED SWITCHGEAR

IMPORTANT NOTE
Only the specific written Technical Instructions supplied by AREVA with the equipment must be used.
Our products must only be commissioned, operated, serviced, repaired or decommissioned in accordance
with Technical Instructions which have been supplied with the product in question by the manufacturer.
This electronic version of the Technical Instructions is provided to the customer for information purposes only.
The equipment must not be commissioned, operated, serviced, repaired or decommissioned on the basis of
this electronic version.
Non-compliance with this instruction may result in serious damage to the product and its associated items,
as well as a health hazard or mortal danger. AREVA shall not be held liable for any such consequences.
AREVA T&D
Worldwide Contact Centre
http://www.areva-td.com/contactcentre/
℡[phone]
Manufacturer:
AREVA Energietechnik GmbH
Sachsenwerk Medium Voltage
Rathenaustrasse 2
D-93055 Regensburg, Germany
℡+49 (0) 9 41 / 46 20-0

+49 (0) 9 41 / 46 20-418
Service:
Should you have any queries as to
our service, please do not hesitate
to contact:
AREVA Energietechnik GmbH
Sachsenwerk Medium Voltage
Service-Center
D-93055 Regensburg, Germany
℡+49 (0) 9 41 / 46 20-777

+49 (0) 9 41 / 46 20-778
©-2006-AREVA Energietechnik GmbH - Sachsenwerk Medium Voltage

3
1 Regulations and provisions 4
1.1 Introduction 4
1.2 Terms and symbols used 4
1.3 Use in line with the intended purpose 4
1.4 Applied standards 5
1.5 Safety provisions 6
1.6 Disposal after the end of the useful life 6
2 Technical data, control and
operating devices 7
2.1 Type designation 7
2.2 Control and operating devices 7
2.3 Technical data for electrical control and
operating devices 8
3 Variant overview 10
3.1 Single busbar panel WSA 10
3.2 Double busbar panel WSB 13
4 Insulating gas, monitoring 16
4.1 General data 16
4.2 Pressure gauge 17
4.3 IGIS 17
5 Voltage detection systems 18
5.1 Integrated Voltage Detecting System IVIS 18
5.2 Pluggable voltage detection system 18
5.3 Phase monitors 18
6 Operation 19
6.1 Operator interfaces 19
6.2 Interlocks 20
6.3 Switching (circuit breaker,
disconnector, earthing switch) 23
6.4 Standard switching operations 26
6.5 Earthing the busbar 27
6.6 Bus sectionalizer 28
6.7 Disconnecting the voltage transformer 29
7 Fan attachment 30
8 Cable test 31
9 Servicing 32
9.1 General 32
9.2 Servicing schedule 32
9.3 Lubrication instructions 33
9.4 Max. number of breaking operations for
the vacuum chambers 38
10 Annex 39
10.1 Auxiliary products 39
10.2 Accessories 39
Contents
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4
1.1 Introduction
These Technical Instructions de-
scribe the operation of gas-insulated
WS medium-voltage switchgear.
These instructions are an integral
part of the product. It must be made
available at any time to the persons
who work on the switchgear. If the
switchgear is ever relocated, it must
be accompanied by this documenta-
tion.
The following additional documents
for this switchgear must be ob-
served:
•Purchase contract with the agree-
ments on the configuration of the
switchgear and with the legal
details
•Installation Instructions
•the contract specific switchgear
circuit diagrams / documentation
•the Operating Instructions of the
devices installed in the switchgear
(e.g. IVIS, devices in low-voltage
cabinet)
•the Instructions for Assembly pro-
vided by the manufacturer of the
cable connection systems to be
connected to the switchgear
•the System Configuration “WS”
•the Technical Instructions “Use
and handling of insulating gas”
for WS (can be requested as
required).
As our products are subject to conti-
nuous further development, we
reserve the right to make changes
regarding standards, illustrations and
technical data.
1.2 Terms and symbols
used
This manual uses certain symbols
which warn about dangers or pro-
vide important information which
must be observed to avoid danger to
personnel and damage to equip-
ment:
Warning!
This symbol warns of
dangerous electrical
voltage. Contact with
live parts may result in fatal
injury!
Warning!
This symbol indicates
important instructions.
Non-compliance may
result in serious injury, death
or damage to the equipment.
Important!
This symbol is used for
information which is impor-
tant to avoid damage.
1.3 Use in accordance
with the intended
purpose
WS gas-insulated medium-voltage
switchgear units are exclusively
intended for switching and distribu-
ting electrical power. They may only
be used in the scope of the speci-
fied standards and the appropriate
switchgear-specific technical data.
Any other use constitutes improper
use and may result in dangers and
damage.
Disclaimer of liability
The manufacturer shall not be held
responsible for damage which
occurs if:
•instructions in this manual are not
complied with,
•the switchgear is not operated
according to its intended use
(see above),
•the switchgear is assembled,
connected or operated improperly,
•accessories or spare parts are
used which have not been appro-
ved by the manufacturer,
•the switchgear is modified without
the manufacturer’s approval, or if
inadmissible parts are attached.
No liability is accepted for parts pro-
vided by customers, e.g. current
transformers.
1 Regulations and provisions
>>

5
1.4 Applied standards
WS switchgear units are
•metal-enclosed
•SF6insulated
•type-tested
•tested for internal arc faults
WS switchgear may only be opera-
ted under normal operating conditi-
ons according to the specifications
EN 60694 or the IEC Publication
60694.
Operation under conditions deviating
from these is only admissible upon
consultation with and approved by
the manufacturer.
Ambient conditions (acc. to IEC 60 694)
Temperature class ”Minus 5 indoors” 3)
Min./max. ambient temperature °C -5 / 40 3)
Average value over 24 hours (max.) °C ≤ 35 3)
Average rel. air humidity: 24 h / 1 month % ≤ 95 / ≤ 90 3)
Max. installation altitude above sea level m ≤ 1,000 3)
3) Higher values possible on request
4) See section 4
Insulating gas (acc. to IEC 60 376)
Type Sulphurhexafluorid (SF6)
Rated pressure pre at 20 °C MPa 0.03-0.075 4)
Environmental and operating conditions
Degree of protection against
accidental contact and
foreign objects
(acc. IEC 60529)
Main electric circuits IP65
Drives IP2X 1)
Low-voltage cabinet IP3X 1)
Cable connection
compartment IP3X 2)
1) optional IP 52
2) optional
Designation IEC standard EN standard
Switchgear IEC 62271-200 EN 62271-200
IEC 60694 EN 60694
Behaviour in case of internal arc faults IEC 60298 EN 60298
Circuit-breaker IEC 62271-100 EN 62271-100
Earthing switch IEC 62271-102 EN 62271-102
Disconnector IEC 62271-102 EN 62271-102
Current transformer IEC 60044-1 EN 60044-1
Voltage transformer IEC 60044-2 EN 60044-2
Voltage detection systems IEC 61243-5 EN 61243-5
Protection against accidental
contact, foreign objects and water IEC 60529 EN 60529
Installation IEC 61936-1 HD 637 S1
Operation of electrical equipment – EN 50110
WS switchgear units meet the following standards and regulations:

6
1.5 Safety provisions
The user shall ensure that the work
described in this manual is carried
out only by the manufacturer's Ser-
vice Centre staff, or by personnel
qualified and authorized to assemble
and test WS switchgear.
Read these instructions carefully
before starting work on the switch-
gear, and perform the work detailed
in them as described. Do not per-
form any work on the switchgear
panel which is not described in this
technical instruction.
Applicable standards and
regulations:
Please comply with:
•the locally applicable health and
safety, operating and work in-
structions
•Installation:
IEC 61936-1 / HD 637 S1
•Operation of electrical installa-
tions EN 50110-1
Important!
Operating reliability and
useful life depend on correct
operation.
Before performing work on the
panel, make sure to comply with the
following instructions:
Warning!
Before starting work on
the high-voltage com-
ponents, de-energize
the system, verify it for zero
voltage and earth the system
according to the applicable
safety rules pursuant to
EN 50110-1.
Warning!
After removal of covers,
operator safety acc. to
IEC 60298 may be
restricted if the appropriate
part of the switchgear unit has
not been isolated from the
power supply.
Warning!
Before performing work
on the drives, switch off
the auxiliary circuit and
prevent it from reclosing.
Warning!
There is a risk of injury
when working on the
drive mechanism.
Release the circuit-breaker’s
energy storing device by per-
forming the corresponding
•OFF-ON-OFF operating
sequence.
•in case of a make-proof
earthing switch, by the
appropriate ON-operation.
Action in the event of incidents or
accidents
The WS switchgear panels feature
pressure relief ports for the case of
an internal arc fault; these ensure
operator safety according to
IEC 60298.
In the event of fire or of internal
faults, substances hazardous to
health and toxic or caustic decom-
position products of the insulating
gas may develop. Comply with the
locally applicable accident and
safety provisions.
In the event of injury to personnel,
ensure that appropriate first-aid
measures are taken.
1.6 Disposal at the end
of service life
The following documents can be
provided on request for the disposal
of WS switchgear at the end of their
service lives:
- Technical Instruction “Use and
handling of insulating gas SF6"
- Material and utilization data sheet
Disposal at the end of the service life
is performed as a service by the
Service Center at the manufacturer's
which is subject to a fee.

7
Fig. 2.1
Name plate on the operating panel
(front side) of the switchgear panel
1 Type designation
2 Serial number
3 Year of manufacture
4 Rating (see also IEC 62271-200)
2 Technical data
>>
2.1 Type designation
The type designation of the switch-
gear panels - see name plate -
informs about
•design
•rated peak withstand current
•rated voltage
•dimensions
Example WSA 6 / 36 - 2 / 6 23
Series WS
Single busbar A
Double busbar B
Rated peak withstand current 60 kA
Rated voltage 36 kV
Rated lightning impulse
withstand voltage 170 kV
Dimensions:
Panel width 600 mm
Panel height 2,300 mm
1
23
4
In case of queries and orders for
spare parts, the following data on
the name plate must be specified:
- Type designation
- Serial number
- Year of manufacture
2.2 Ratings for Switchgear WS
Rated voltage Ur[kV] 12 17.5 24 36
Rated lightning impulse withstand voltage Up[kV] 75 95 125 170
Rated short-duration power-frequency withstand voltage Ud[kV] 28 38 50 70
Rated normal current busbar Irmax. [A] 2,500
Rated normal current feeder Irmax. [A] 2,500
Rated peak withstand current Ip max. [kA] 82
Rated short-circuit breaking current Isc max. [kA] 31.5
Rated short-time withstand current Ikmax. [kA] 31.5 ( 3 s)
Rated frequency fr[Hz] 50/60

8
2.3 Technical data for
electrical control and
operating devices
The switchgear panels have been
designed on principle for manual
operation.
The drive mechanisms of the indi-
vidual switching devices can be
equipped, depending on the specific
customer's model, with additional
electrical control and operating de-
vices. These are characterized in the
switchgear-specific circuit diagram
(see switchgear documentation).
Component fitting options:
Motor
•for charging the energy-storing
device (closing spring)
•for actuation of the disconnector
and earthing switch
Closing release
•1 unit
Opening release
•max. 2 units
Secondary release
(CT-powered release)
•max. 2 units
•(Maximum equipment – opening
release and secondary release,
3 units in total)
Undervoltage release
•1 unit
Blocking coil
Blocking coils prevent the circuit
breaker from being closed and
opened via the mechanical push-
buttons “ON“ or “OFF“, as well as
actuation of the interlocking levers of
the disconnectors and earthing swit-
ches.
Times for releases and motor
Minimum tripping command duration
for release 160 W [ms] 20
for release 25 W [ms] 50
minimum closing command duration [ms] 20
Motor charging time [s] ≤ 12
Overview rated supply voltages
DC voltage: [V] 24 / 48 / 60 / 110 / 125 / 220
AC voltage: [V] (110) 120 / (220) / 230
Power consumption, solenoids and motor
Power consumption
DC AC 50/60 Hz
approx. [W] approx. [VA]
Closing release 160 160
Opening release without
auxiliary spring energy store 160 160
Opening release with
auxiliary spring energy store 25 25
Undervoltage release 15 15
CT-powered release – 12
Blocking coil 12 12
Motor 200 - 250 200 - 250
Please enquire at the manufacturer’s for details of the motor’s starting current.
The auxiliary voltage data is required to this effect.

9
Adjustment of Auxiliary Switches
Auxiliary switches are always actua-
ted directly by the switch shaft via an
intermediate linkage. Their position
always corresponds to that of the
main contacts.
Please take current adjustment of
auxiliary switches from the latest
revision of switchboard's LV sche-
matics.
Adjustable cams are enabling inivi-
dually setting of switching perfor-
mance. Setting should only be car-
ried out by a specialist who is used
to the installed auxiliary switches.
Auxiliary switches may not be disas-
sembled.
Fig. 2.2
Setting the cams of the auxiliary switch
Cam
Viewing direction
for adjustment
Rated supply voltage DC
Switching capacity
Time constant T=L/R
Rated short-time current
[V]
[A]
24
8
[ms] ≤ 20
100 A for a duration of 30 ms
48
4
60
3
110
2
220
1
Rated continuous current [A] 10
AC
120
10
230
10
–
Auxiliary switch

10
3 Variant overview
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Fig. 3.1
1 Drive with front control panel
2 Circuit-breaker compartment
3 Busbar tank with disconnector and earthing switch
4 Supporting structure with cable connection area
5 Low voltage cabinet
7 Cable test sockets
8 IVIS voltage indicator
3.1 Single busbar panel WSA
7
4
5
8
2
3
1