MR CEDASPE VP Series User manual

Operating instructions
Pressure relief device. CEDASPE® VP series
10679401/00 EN
THE POWER BEHIND POWER.

© All rights reserved by Maschinenfabrik Reinhausen
Dissemination and reproduction of this document and use and disclosure of
its content are strictly prohibited unless expressly permitted.
Infringements will result in liability for compensation. All rights reserved in
the event of the granting of patents, utility models or designs.
The product may have been altered since this document was published.
We reserve the right to change the technical data, design and scope of
supply.
Generally the information provided and agreements made when processing
the individual quotations and orders are binding.
The product is delivered in accordance with MR's technical specifications,
which are based on information provided by the customer. The customer has
a duty of care to ensure the compatibility of the specified product with the
customer's planned scope of application.
The original operating instructions were written in German.

10679401/00 EN Table of contents 3
Table of contents
1 Introduction ................................................................... 5
1.1 Manufacturer ...........................................................................................5
1.2 Safekeeping .............................................................................................5
1.3 Notation conventions.............................................................................5
1.3.1 Hazard communication system.............................................................5
1.3.2 Information system.................................................................................7
1.3.3 Instruction system ..................................................................................7
1.3.4 Typographic conventions.......................................................................8
2 Security.......................................................................... 9
2.1 Intended use............................................................................................9
2.2 Fundamental safety instructions.........................................................10
2.3 Personnel qualification .........................................................................12
2.4 Personal protective equipment ........................................................... 13
3 Product description...................................................... 14
3.1 Scope of delivery ...................................................................................14
3.2 Function description .............................................................................14
3.3 Design/versions .................................................................................... 15
3.3.1 VP50 pressure relief device.................................................................. 17
3.3.2 VP80, VS100 and VP150 pressure relief device .................................18
3.3.3 VP80-QT pressure relief device...........................................................19
3.3.4 VP150-QT and VP150-ST pressure relief device ............................... 20
3.4 Safety markings and nameplate .......................................................... 21
4 Packaging, transport and storage ................................ 23
4.1 Purpose ..................................................................................................23
4.2 Suitability, structure and production...................................................23
4.3 Markings.................................................................................................23
4.4 Transportation, receipt and handling of shipments ......................... 24
4.5 Storage of shipments ...........................................................................25
5 Mounting...................................................................... 26
5.1 Checking the pipe flanges ................................................................... 28
5.2 Mounting device versions VP50, VP80, VS100 and VP150.............. 29
5.3 Mounting device versions VP80-QT, VP150-QT and VP150-ST.......32

4 Table of contents 10679401/00 EN
5.4 Electrical connection.............................................................................36
5.4.1 Cable recommendation........................................................................37
5.4.2 Connection via connection box (Crouzet version).............................37
5.4.3 Connection via limit-value switch (Telemecanique version) ............39
6 Commissioning ............................................................40
6.1 Filling with oil and performing the venting test ................................ 40
6.2 Leak test.................................................................................................41
6.3 Removing the protective panel on the signal pin (VP150-QT and
VP150-ST) ..............................................................................................41
6.4 Checking the function of the micro-switches ................................... 42
7 Operation.....................................................................44
7.1 Contact signals ..................................................................................... 44
7.2 Pressure relief device operating state................................................ 46
7.3 Manually resetting the micro-switches.............................................. 47
8 Maintenance and inspection ........................................48
9 Fault elimination ..........................................................49
9.1 Testing the tripping circuit and reason for tripping .......................... 49
10 Disposal ....................................................................... 50
10.1 SVHC information in accordance with the REACH regulation ........ 50
11 Technical data...............................................................51
12 Drawings...................................................................... 55
12.1 VP50 ...................................................................................................... 56
12.2 VP80.......................................................................................................57
12.3 VS100 .................................................................................................... 58
12.4 VP150 .....................................................................................................59
12.5 VP80-QT ............................................................................................... 60
12.6 VP150-QT...............................................................................................61
12.7 VP150-ST............................................................................................... 62
Glossary ....................................................................... 63

10679401/00 EN Introduction 5
1 Introduction
This technical file contains detailed descriptions on the safe and proper in-
stallation, connection, commissioning and monitoring of the product.
This technical document is intended solely for specially trained and autho-
rized personnel.
1.1 Manufacturer
CEDASPE S.r.l.
Via Colombara 1
20098 S. Giuliano Milanese (MI)
Italy
Tel.: [phone]
Internet: www.reinhausen.com
Further information on the product and copies of this technical file are avail-
able from this address if required.
1.2 Safekeeping
Keep this technical file and all supporting documents ready at hand and ac-
cessible for future use at all times.
1.3 Notation conventions
This section contains an overview of the symbols and textual emphasis used.
1.3.1 Hazard communication system
Warnings in this technical file are displayed as follows.

6 Introduction 10679401/00 EN
1.3.1.1 Warning relating to section
Warnings relating to sections refer to entire chapters or sections, sub-sec-
tions or several paragraphs within this technical document. Warnings relating
to sections have the following format:
WARNING
Type of danger!
Source of the danger and its consequences.
Action
Action
1.3.1.2 Embedded warning information
Embedded warnings refer to a particular part within a section. These warn-
ings apply to smaller units of information than the warnings relating to sec-
tions. Embedded warnings use the following format:
DANGER! Instruction for avoiding a dangerous situation.
1.3.1.3 Signal words
Depending on the product, the following signal words are used:
Signal word Meaning
DANGER Indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING Indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE Indicates measures to be taken to prevent damage to property.
Table1: Signal words in warning notices

10679401/00 EN Introduction 7
1.3.2 Information system
Information is designed to simplify and improve understanding of particular
procedures. In this technical file it is laid out as follows:
Important information.
1.3.3 Instruction system
This technical file contains single-step and multi-step instructions.
Single-step instructions
Instructions which consist of only a single process step are structured as fol-
lows:
Aim of action
Requirements (optional).
1. Step 1 of 1.
Result of step (optional).
Result of action (optional).
Multi-step instructions
Instructions which consist of several process steps are structured as follows:
Aim of action
Requirements (optional).
1. Step 1.
Result of step (optional).
2. Step 2.
Result of step (optional).
Result of action (optional).

8 Introduction 10679401/00 EN
1.3.4 Typographic conventions
Typographic convention Purpose Example
UPPERCASE Operating controls,
switches
ON/OFF
[Brackets] PC keyboard [Ctrl] + [Alt]
Bold Software operating controls Press Continue button
…>…>… Menu paths Parameter > Control param-
eter
Italics System messages, error
messages, signals
Function monitoring alarm
triggered
[► Number of pages] Cross reference [► Page41].
Dotted underscore
.............................................
Glossary entry, abbrevia-
tions, definitions, etc.
Glossary entry
........................
Table2: Typographic conventions used in this technical file

10679401/00 EN Security 9
2 Security
Read this technical file through carefully to familiarize yourself with the prod-
uct. This technical file is a part of the product.
–Read and observe the safety instructions provided in this chapter in partic-
ular.
–Observe the warnings in this technical file to avoid function-related dan-
gers.
The product is manufactured based on state-of-the-art technology. Never-
theless, danger to life and limb for the user or impairment of the product and
other material assets may arise in the event of improper use.
2.1 Intended use
The pressure relief device protects oil-filled power transformers and on-load
tap-changers against impermissible pressure increases. At a predetermined
pressure, the pressure relief device opens, relieves the pressure and closes
tightly again once the pressure has dropped.
The product is designed solely for use in stationary large-scale systems.
If used as intended and in compliance with the requirements and conditions
specified in this technical file as well as the warning notices in this technical
file and attached to the product, then the product does not present any dan-
ger to people, property or the environment. This applies throughout the ser-
vice life of the product, from delivery, installation and operation to removal
and disposal.
The following is considered intended use:
–Only use the product for oil-filled power transformers.
–Operate the product in accordance with this technical documentation, the
agreed-upon delivery conditions and the technical data.
–Ensure that all necessary work is performed by qualified personnel only.
–Use the equipment and special tools supplied solely for the intended pur-
pose and in accordance with the specifications of this technical file.

10 Security 10679401/00 EN
2.2 Fundamental safety instructions
To prevent accidents, malfunctions and damage as well as unacceptable ad-
verse effects on the environment, those responsible for transport, installa-
tion, operation, maintenance and disposal of the product or parts of the
product must ensure the following:
Personal protective equipment
Loosely worn or unsuitable clothing increases the danger of becoming
trapped or caught up in rotating parts and the danger of getting caught on
protruding parts. This results in danger to life and limb.
–All necessary devices and personal protective equipment required for the
specific task, such as a hard hat, safety footwear, etc. must be worn. Ob-
serve the "Personal protective equipment" [►Section 2.4, Page 13] sec-
tion.
–Never wear damaged personal protective equipment.
–Never wear rings, necklaces or other jewelry.
–If you have long hair, wear a hairnet.
Work area
Untidy and poorly lit work areas can lead to accidents.
–Keep the work area clean and tidy.
–Make sure that the work area is well lit.
–Observe the applicable laws for accident prevention in the relevant coun-
try.
Explosion protection
Highly flammable or explosive gases, vapors and dusts can cause serious ex-
plosions and fire.
–Do not install or operate the product in areas where a risk of explosion is
present.

10679401/00 EN Security 11
Safety markings
Warning signs and safety information plates are safety markings on the prod-
uct. They are an important aspect of the safety concept. Safety markings are
depicted and described in the chapter "Product description".
–Observe all safety markings on the product.
–Make sure all safety markings on the product remain intact and legible.
–Replace safety markings that are damaged or missing.
Ambient conditions
To ensure reliable and safe operation, the product must only be operated un-
der the ambient conditions specified in the technical data.
–Observe the specified operating conditions and requirements for the in-
stallation location.
Modifications and conversions
Unauthorized or inappropriate changes to the product may lead to personal
injury, material damage and operational faults.
–Only modify the product after consultation with Maschinenfabrik Rein-
hausen GmbH.
Spare parts
Spare parts not approved by Maschinenfabrik Reinhausen GmbH may lead to
physical injury, damage to the product and malfunctions.
–Only use spare parts that have been approved by Maschinenfabrik Rein-
hausen GmbH.
–Contact Maschinenfabrik Reinhausen GmbH.
Working during operation
You must only operate the product when it is in a sound operational condi-
tion. Otherwise it poses a danger to life and limb.
–Regularly check the operational reliability of safety equipment.
–Perform the inspection tasks described in this technical document regu-
larly.

12 Security 10679401/00 EN
2.3 Personnel qualification
The person responsible for assembly, commissioning, operation and inspec-
tion must ensure that personnel are sufficiently qualified.
Electrically skilled person
The electrically skilled person has a technical qualification and therefore has
the required knowledge and experience, and is also conversant with the ap-
plicable standards and regulations. The electrically skilled person is also profi-
cient in the following:
–Can identify potential dangers independently and is able to avoid them.
–Is able to perform work on electrical systems.
–Is specially trained for the working environment in which (s)he works.
–Must satisfy the requirements of the applicable statutory regulations for
accident prevention.
Electrically trained persons
An electrically trained person receives instruction and guidance from an elec-
trically skilled person in relation to the tasks undertaken and the potential
dangers in the event of inappropriate handling as well as the protective de-
vices and safety measures. The electrically trained person works exclusively
under the guidance and supervision of an electrically skilled person.
Operator
The operator uses and operates the product in line with this technical file.
The operating company provides the operator with instruction and training
on the specific tasks and the associated dangers arising from improper han-
dling.
Technical Service
We strongly recommend having repairs and retrofitting carried out by our
Technical Service department. This ensures that all work is performed cor-
rectly. If a repair is not carried out by our Technical Service department,
please ensure that the personnel who carry out the maintenance are trained
and authorized by CEDASPE S.r.l. to carry out the work.

10679401/00 EN Security 13
CEDASPE S.r.l
Via Colombara 1
20098 S. Giuliano Milanese (MI)
Italy
Tel.: [phone]
Internet: www.reinhausen.com
2.4 Personal protective equipment
Personal protective equipment must be worn during work to minimize risks
to health.
–Always wear the personal protective equipment required for the job at
hand.
–Never wear damaged personal protective equipment.
–Observe information about personal protective equipment provided in the
work area.
Protective clothing Close-fitting work clothing with a low tearing strength,
with tight sleeves and with no protruding parts. It mainly
serves to protect the wearer against being caught by mov-
ing machine parts.
Safety shoes To protect against falling heavy objects and slipping on
slippery surfaces.
Safety glasses To protect the eyes from flying parts and splashing liquids.
Visor To protect the face from flying parts and splashing liquids
or other dangerous substances.
Hard hat To protect against falling and flying parts and materials.
Hearing protection To protect against hearing damage.
Protective gloves To protect against mechanical, thermal and electrical haz-
ards.
Table3: Personal protective equipment

14 Product description 10679401/00 EN
3 Product description
3.1 Scope of delivery
The following items are included in the scope of delivery:
–Pressure relief device
–O-ring gasket for assembly
Optional
–O-ring gasket for connection to the oil escape opening
3.2 Function description
The pressure relief device with the device flange is mounted tightly on the
top or on the side of transformer tank or on the on-load tap-changer. If the
internal pressure of the transformer or the on-load tap-changer exceeds the
predefined operating pressure of the pressure relief device, then the spring-
loaded valve plate lifts off of its seal seat within a few milliseconds. As a re-
sult, the internal pressure is relieved as quickly as possible and the valve plate
again closes the pressure relief device tightly.
As an external indication that the valve has tripped, a self-locking signal pin
slides out of the housing.
Once the pressure falls below the operating pressure, the valve closes again.
The signal pin must be reset to its operating position manually. The signaling
contacts installed as an option are automatically reset in the process.
If the device trips (ALARM state), a signal is sent optionally via up to 4 micro-
switches (change-over contact) or up to 2 limit-value switches (1-pole or 2-
pole, normally open contact and normally closed contact). The switches are
connected to the electrical controller and the monitoring circuit of the trans-
former.

10679401/00 EN Product description 15
3.3 Design/versions
The pressure relief device is available in various versions, optionally with mi-
cro-switches or limit-value switches. The switches are available as Crouzet
versions (type K) or as Telemecanique versions (type C). The red signal pin in-
dicates that the device has tripped.
In addition to the current product name, the different versions of the pres-
sure relief device can also be ordered under the historical product name. In
the remainder of this technical document, only the current product names
are used:
Current product name Historical product name Product description
VP50 VSQI50 Mounting via 4-hole flange
Optional splash guard avail-
able
VP80 VS80 Mounting via 4-hole flange
Optional splash guard avail-
able
Lever for manually resetting
the micro-switches on the
terminal box
VS100 VS100
VP150 VS150 Mounting via 8-hole flange
Optional splash guard avail-
able
Lever for manually resetting
the micro-switches on the
terminal box

16 Product description 10679401/00 EN
Current product name Historical product name Product description
VP80-QT VQT-2 80 Mounting via 4-hole flange
Protective cover with inte-
grated terminal box and
square 4-hole connection
for pipe (Ø 70mm) for di-
rected oil flow
VP150-QT VQT-2 150 Mounting via 6-hole flange
Protective cover with inte-
grated terminal box and
square 4-hole flange con-
nection for pipe (Ø 100mm)
for directed oil flow
VP150-ST VST-2 150 Mounting via 8-hole flange
Protective cover with inte-
grated terminal box and
square 4-hole flange con-
nection for pipe (Ø 100mm)
for directed oil flow
Table4: Versions
It is typical to use several pressure relief devices on transform-
ers that have large volumes of oil.
Take into account the space available for mounting and the
amount of oil that escapes upon triggering when selecting the
size of the pressure relief device.

10679401/00 EN Product description 17
3.3.1 VP50 pressure relief device
Figure1: Device version VP50 design
1 Signal pin 2 Counter bearing for spring assembly
3 Splash guard (optional) 4 Vent screw
5 Device flange 6 Spring assembly
7 Valve plate 8 O-ring gasket
9 Micro-switch (optional) 10 Terminal box

18 Product description 10679401/00 EN
3.3.2 VP80, VS100 and VP150 pressure relief device
Figure2: Device versions VP80, VS100 and VP150 design
1 Signal pin 2 Counter bearing for spring assembly
3 Splash guard (optional) 4 Terminal box
5 Lever for manual resetting 6 Valve plate
7 O-ring gasket 8 Device flange
9 Vent screw 10 Spring assembly

10679401/00 EN Product description 19
3.3.3 VP80-QT pressure relief device
Figure3: Device version VP80-QT design
1 Signal pin 2 Protective cover with connection for
pipe for directed oil flow
3 Counter bearing for spring assembly 4 Vent screw
5 O-ring gasket for connecting the
pipe for directed oil flow
6 O-ring gasket
7 Valve plate 8 Spring assembly
9 Device flange 10 Terminal box
11 Micro-switch (optional)

20 Product description 10679401/00 EN
3.3.4 VP150-QT and VP150-ST pressure relief device
Figure4: Device versions VP150-QT and VP150-ST design
1 Signal pin 2 Counter bearing for spring assembly
3 Spring assembly 4 Vent screw
5 Valve plate 6 O-ring gaskets, flange and protec-
tive cover
7 Device flange 8 O-ring gasket for connecting the
pipe for directed oil flow
9 Protective cover with connection for
pipe for directed oil flow
10 Micro-switch (optional)
11 Terminal box