Circutor OT-60 Instruction Manual

DIELECTRIC STRENGTH TESTER

FOR ISOLATING OILS

OT-60

( Código: P60311 )

INSTRUCTION MANUAL

( M98112801-03 / 04B )

(c)

CIRCUTOR S.A.

DIELECTRIC STRENGTH TESTER FOR ISOLATING OILS

OT-60

1. BASIC INSTRUCTIONS

1.1 Delivery spot check

This manual is issued to help all the users to install and use the dielectric strength
tester for isolating oils OT-60, and also to help them to get the best from it. After receiving
the equipment, please check the following points:

(a) The equipment corresponds to your order specification

(b) Check if any damage was done during the shipment process

(c) Verify that you have received all the components specified on 2

nd

point.

1.2 Connection procedures

The manual you hold in your hands contains information and warnings that the user
should respect in order to guarantee a proper operation of all the functions of the OT-60
and keep its safety conditions. Also you must follow the usual security actions.

1.3 Considerations related to the standards

All the comments and advices that you can read on this manual related to the
procedure that you must follow to do dielectric strength tests, are referred to the IEC 156
standard, being only valid if you are following it. If you want to follow another standard, the
comments and advices of this manual can be different (Go to 10

th

point)

2. VERIFICATION OF THE DELIVERIED COMPONENTS

When you receive the equipment, please check that the following components are

included:

2.1 Test Cell:

Open the equipment’s door and pull out the test cell’s white connectors firmly.
Inside the test cell we can find a small bag including the components specified on
the following point.

2.2 Small Bag including the following components: gauge, Allen spanner and teflon
coated magnet

Look for this small bag inside the test cell.
The delivered gauge is 2,5 mm ± 0,05 mm in width, according to the IEC-156 standard . If
you need other widths go to 10

th

point.

2.3 OT-60 equipment:

Once extracted the test cell, we will see the following image:

Sometimes we can find the keys inside the bag specified on point 2.2

2.4 Connection cable:

It’s a standard connection cable.

3. INTRODUCTION

The OT-60 range is automatic equipment especially designed to test the disruptive
voltage of isolating oils in new or used transformers, cables with oil, automatic switches,
capacitors, etc.

The disruptive voltage is not a basic property of the oil, but it indicates us the degree
of contamination of this oil (water, solid materials in suspension), allowing us to decide on
the possibility of carrying out a treatment of drying and filtration, or replacing the oil.

The method that the OT-60 uses can be applied to oils of nominal viscosity of up to
350 mm

2

/s at 40ºC, according to IEC-156 standard.

The OT-60 is supplied with a complete series of protectors making it highly protected
and reliable.

It is easy to handle, all buttons or illuminated switches are on the front control panel;
there is also an audible signal each time a key is pressed or when the oil sample is
perforated.

The test cell is especially designed to easily change the electrodes in accordance
with the different standards in operation, the easy insertion into the registering transformer
terminals and for its complete cleaning.

The equipment also has a magnetic stirrer to completely mix the oil to be tested. The
moving part ot the stirrer is a small teflon coated magnet.

4. DESCRIPTION OF THE CONTROLS

Next we can see a representation of the controls of the equipment and the description of its functions:

STOP

PAUSE

2

3

4

5

6

7

9

8

1