ISA T2000 - 1 Introduction

DOC. SIE10110 Rev. 6 Page 4 of33
1 INTRODUCTION
T2000 allows performing all tests on current and voltage transformers, and of some protection
relays. The following table lists the tests that can be performed on CT and VT.
N.
TEST
OF
TEST DESCRIPTION
1
CT
Ratio, Voltage mode
2
CT
Ratio, polarity and burden
3
CT
Burden; secondary side
4
CT
Excitation curve
5
CT
Winding or burden resistance
6
CT
Voltage withstand
7
CT
Polarity by impulses
8
VT
Ratio; polarity
9
VT
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
R
Ground resistance and resistivity
Tests are performed in accordance with the following IEC standards: EN 60044-1; EN 60044-2; EN
60044-5; EN 60044-7; EN 60044-8; EN 60076-1, and also in accordance with ANSI/IEEE
C57.13.1.
The following table lists the tests that can be performed on protection relays (FW revision 1.40).
Type of relay
IEEE code
- Thermal
26
- Over/under-voltage
27 - 59
- Under current
37
- Instantaneous overcurrent
50
- Ground fault
50N
- Timed overcurrent
51
- Circuit breaker
52
- Automatic reclose
79
- Tripping relay
94
- Timers
In addition to the above, T2000 can test the impedance and coupling coefficient of overhead lines.
With external options, T2000 can test:
. With the High IDC module, up to 400 A: contact resistances, in the micro-Ohm range;
. With the current booster: primary tests, up to 2000 A; with the very high current booster option, up
to 4000 A.
The basic T2000 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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