ISA T2000 User manual

DATE: 20/04/2011
DOC.MIE12110 REV.4
T2000
INTRODUCTORY GUIDE

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REVISIONS SUMMARY VISA
NPAGE DATE
1All 25/04/2006 Issued Lodi.
239 to 43 8/06/2006 Added the
Calibration
chapter
Lodi
3All 23/11/2009 Minor corrections Lodi
471, 72 20/4/2011 Modified for the
firmware revision
1.40
Lodi

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SHORT FOREWORD.......................................................................................................5
INTRODUCTION................................................................................................................6
1 TEST SET DESCRIPTION AND USE...................................................................9
1.1 THE FRONT PANEL....................................................................................................9
1.2 THE POP-UP MENU.................................................................................................12
1.2.1 Transformers selection....................................................................13
1.3 POWER-ON...............................................................................................................18
1.4 OUTPUTS DESCRIPTION AND HAZARDOUS SITUATIONS .........................20
1.4.1 Main current and voltage outputs............................................20
1.4.2 HV voltage output................................................................................22
1.4.3 Hazardous situation summary...................................................23
1.5 CURRENT GENERATION.........................................................................................24
1.6 OPTIONAL THERMAL PRINTER.............................................................................26
1.7 PROTECTIONS .........................................................................................................26
2 TRANSFORMERS TESTING FUNDAMENTALS...........................................30
2.1 CURRENT TRANSFORMERS...................................................................................30
2.2 REMANENCE..............................................................................................................31
2.3 HIGH CURRENT TESTS..........................................................................................31
2.4WINDING RESISTANCE TEST.............................................................................31
3 WHAT’S INSIDE?.......................................................................................................33
3.1 PHYSICAL DESCRIPTION.....................................................................................33
3.2 DETAILED FUNCTION DESCRIPTION................................................................37
3.2.1 Main output transformer, XTF10350 (5).............................37
3.2.2 Main front board PWA11411 (17).............................................38
3.2.3 TRANSFORMERS board PWA21412 (83)...............................38
3.2.4 CONV-T 3000 board PWA21401 (16).....................................39
3.2.5 INTE ON-OFF T 3000 board PWA11410 (7)........................40
3.2.6 MICR T1000 board PWA41300 (15)........................................40
4 THE HELL, IT DOESN’T WORK..........................................................................42
4.1 INTRODUCTION.......................................................................................................42
4.2 ERROR MESSAGES.................................................................................................42
4.3 TROUBLE SHOOTING.............................................................................................46
4.4 AT POWER-ON DOES NOT TURN ON.................................................................47
4.5 NO OUTPUT FROM THE MAIN CURRENT AND VOLTAGE..............................48
4.6 THE AC VOLTAGE MEASUREMENT IS NOT STABLE......................................48
4.7 PROBLEMS DURING UPGRADE............................................................................48
4.8 FALSE ALARM OF MISSING GROUND CONNECTION....................................49

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4.9 THE DISPLAY BACKLIGHT DOES NOT TURN ON OR THE DISPLAY
DOES NOT OPERATE.......................................................................................................49
4.10 A110 VRATED TEST SET WAS POWERED AT 220 V.............................51
4.11 THE TEST SET DOES NOT COMMUNICATE WITH THE PC........................53
4.12 FAULT ON THE 10 VOR 600 VEXTERNAL MEASUREMENT....................55
4.13 FAULT ON THE 10 AEXTERNAL MEASUREMENT.........................................65
4.14 FAULT ON THE REAL TIME CLOCK..................................................................69
4.15 THE ENCODER IS BROKEN................................................................................70
4.16 UPGRADE TO FIRMWARE REVISION 1.40....................................................71
4.17 THE FAULT CANNOT BE FIXED.........................................................................73
5 CALIBRATION.............................................................................................................77
5.1 INTRODUCTION......................................................................................................77
5.2 CALIBRATION PROCEDURE................................................................................77
5.3 T2000 OUTPUT CALIBRATION........................................................................79
5.3.1 OUTPUT CURRENTS CALIBRATION.............................................79
5.3.2 OUTPUT VOLTAGES CALIBRATION..............................................80
5.4 EXTERNAL INPUT CURRENTS........................................................................82
5.5 EXTERNAL INPUT VOLTAGES........................................................................84
APPENDIX 1 SPARE PARTS LIST.........................................................................86

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SHORT FOREWORD
Dear T 2000 user,
I often wondered why the user’s manual is not very much used,
even if it includes valuable information. As me too I am a user of
such manuals, the answer I have given myself is that valuable
information are concealed somewhere in the thick thing, and I do
not have time to waste to find it. So, either the manual is actually
of help, or I ignore it.
This is why I decided to split the T 2000 manual in three:
specification, with all performance details; application manual, with
instructions about how to use it one its operation is understood;
introductory guide, with the device description and basic
information. The idea is that you may read once the device
description, while you need application examples more than once;
so, why not to split the manual in three?
The only exception to this organization is next page: it reminds to
be cautious when using these test sets. We are on the field since
more than 50 years, and no injury has ever been reported; yet,
your kids want you back home after work.
Have a good work with T 2000!
Primo Lodi
Q&A Manager

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INTRODUCTION
T 2000 allows performing all the test to be performed on current
and voltage transformers. The following table lists the tests that
can be performed on CT and VT.
N. TEST
OF TEST DESCRIPTION
1CT Ratio, Voltage mode
2CT Ratio, polarity and burden
3CT Burden; secondary side
4CT Excitation curve
5CT Winding or burden resistance
6CT Voltage withstand
7CT Polarity by impulses
8VT Ratio; polarity
9VT Burden, secondary side
10 VT Ratio, electronic transformers
11 VT Voltage withstand
12 VT Secondary over-current protection
13 PT Ratio per TAP
14 PT
Resistance of Tap Changer
contacts
15 PT
Tap Changer dynamic resistance
test
16 RGround resistance and resistivity
With external options, T 2000 can test:
. With the High IDC module, up to 400 A: contact resistances, in
the micro-Ohm range;
. With the high current booster: primary tests, up to 2000 A;
. With the very high current booster: primary tests, up to 4000 A.
The basic T 2000 function is to generate current and voltages, as
requested by the type of test to be performed, that is selected on
the LCD screen by means of the multi-function knob. Test results
are kept in memory, and can be transferred to a PC at a later
time, along with settings.

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The instrument contains one generator with many outputs: High
AC current; Low AC current; Low DC current; Current impulses;
High AC voltage; Low AC voltage; Low DC voltage.
All outputs are adjustable and metered on the large, graphic LCD
display. With the multi-purpose knob and the LCD display it is
possible to enter the MENU mode, that allows to set many
functions, that make T 2000 a very powerful testing device, with
manual and semi-automatic testing capabilities, and with the
possibility to transfer test results to a PC via the RS232 interface.
These results can be recorded, displayed and analysed by the
powerful TDMS software, which allows creating a data base of
test results for all the plant.
The ease of operation has been the first goal of T 2000: this is
why the LCD is graphic, and so large. With it, the dialogue in MENU
mode is made easy. Besides, all T 2000 outputs relevant to the
selected test are continuously measured, and output values are
displayed, with no extra effort to the operator.
Additional features are:
. Two meters, current and voltage, with independent inputs, and
with High and Low inputs each, allow measuring CT or VT outputs
or any other source;
. The optional thermal printer gives the immediate printout of the
CT saturation curve;
. An auxiliary contact, that follows START and STOP inputs, allows
simulating the circuit breaker.
At power-on, there is a message asking to wait for the self
diagnosis is completed. After this, the following menu is displayed.

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The desired operation is accessed by the multi-function wheel.
The following chapters explain how to operate with the above
selections.
NOTE: WINDOWS is a trademark of MICROSOFT inc.

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1 TEST SET DESCRIPTION AND USE
In this chapter we describe the test set and inform about the
operations that are common to relay or transformers testing.
1.1 THE FRONT PANEL

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The following list includes the key components inside T 2000.
1) Supply socket and main supply fuse, rated T5A, incorporated in
the supply socket.
2) Power-on switch, with light.
4) Emergency push-button with lock-in.
5) Main outputs transformer.
6) Main outputs adjustment.
7) INTE ON-OFF printed circuit board; code YWA11410.
8) Earth socket.
11) Back panel board ; code YWA11413.
12) High output current measurement transformer.
13) Output sockets for high current output.
15) Microprocessor board, code YWA41300.
16) Converter board code YWA11401.
17) Front panel board; code YWA11411.
22) MENU control knob, with switch.
23) Display.
25) Serial interface connector.
26) Main current outputs measuring transformer.
27) Main current output sockets.
28) High Voltage enable key.
29) Variable transformer home position switch.
44) 800 A range selection light.
45) 40 A or 25 V range selection light.
46) 10 A or 90 V range selection light.
49) ON + TIME light: current is generated and time metered until
STOP is detected.
50) OFF light: no current generation.
51) ON light: current is generated.
52) OFF + TIME light: current is removed and time metered until
STOP is detected.
53) Main AC voltage selection light.
54) Main DC current or current impulses selection light.
55 and 56) START and STOP push-buttons.
57) Push-button for the selection of main output.
58) HV voltage on light.
60) Main AC voltage safety sockets.
61) Main DC current or current impulses safety sockets.
67) External current meter safety sockets.