ISA T2000 User manual

DATE: 04/10/20011 DOC.SIE10110 REV.6
T2000 TEST SET
for testing CT’s, PT’s,
primary injections and relay tests
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DOC. SIE10110 Rev. 6 Page 3 of33
1 INTRODUCTION ....................................................................................................................................................... 4
2 APPLICABLE STANDARDS ...................................................................................................................................... 7
3 CHARACTERISTICS ................................................................................................................................................8
3.1 FOREWORD ...............................................................................................................................................................8
3.2 MAIN GENERATOR .................................................................................................................................................... 8
3.2.1 High AC current ............................................................................................................................................... 8
3.2.2 Low AC current................................................................................................................................................. 8
3.2.3 Low DC current ................................................................................................................................................ 9
3.2.4 Current impulses............................................................................................................................................... 9
3.2.5 High AC voltage.............................................................................................................................................. 10
3.2.6 Low AC voltage............................................................................................................................................... 10
3.2.7 Other features of main outputs....................................................................................................................... 10
3.3 AUXILIARY CONTACT .............................................................................................................................................. 10
3.4 TIMER ..................................................................................................................................................................... 11
3.5 OUTPUTS MEASUREMENT......................................................................................................................................... 11
3.5.1 Current and voltage ........................................................................................................................................ 11
3.5.2 Phase angle..................................................................................................................................................... 13
3.5.3 Other measurements....................................................................................................................................... 14
3.6 EXTERNAL INPUTS MEASUREMENT......................................................................................................................... 14
3.6.1 Current measurement..................................................................................................................................... 14
3.6.2 Voltage measurement...................................................................................................................................... 15
3.6.3 Other measurements....................................................................................................................................... 15
3.7 DISPLAY .................................................................................................................................................................. 16
3.8 TEST CONTROL........................................................................................................................................................ 16
3.8.1 Relay selection................................................................................................................................................. 16
3.8.2 Transformers selection ................................................................................................................................... 16
3.9 MENU SELECTIONS.................................................................................................................................................. 17
3.9.1 Relay selection................................................................................................................................................. 17
3.9.2 Transformers selection ................................................................................................................................... 20
3.10 CONNECTION CABLES ........................................................................................................................................... 22
3.11 OTHER CHARACTERISTICS..................................................................................................................................... 23
3.12 OPTIONS ................................................................................................................................................................ 23
3.12.1 Power supply code PII20110 ........................................................................................................................ 23
3.12.2 Optional high voltage output 1200 V; codes PII30110 (supply 230 V) or PII40110 (supply 110 V)......... 24
3.12.3 Model T2000E, code PII50110.................................................................................................................... 24
3.12.4 Transit cases.................................................................................................................................................. 24
3.12.5 Current clamp code PII16102 ...................................................................................................................... 25
3.12.6 Thermal printer PII14102 ............................................................................................................................ 26
3.12.7 BU2000: very high AC current boosters ...................................................................................................... 26
3.12.8 High I DC module PII13102 ........................................................................................................................ 30
3.12.9 SU3000 Safety device for the line impedance measurement, code ZII26102 ............................................ 30
3.12.10 FT/1000 current filter, code PII16093....................................................................................................... 31
3.12.11 Earth resistance and resistivity test kit, code PII19102 ............................................................................. 31
4 PROTECTIONS ........................................................................................................................................................ 33
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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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The instrument contains a generator, with six outputs: High AC current; Low AC current; Low DC
current; Current impulses; High AC voltage; Low AC voltage.
The selected output is 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 T2000 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 operates
with all WINDOWS versions.
The ease of operation has been the first goal of T2000: this is why the LCD is graphic, and so large.
With it, the dialogue in MENU mode is made easy. Besides, all T2000 outputs relevant to the
selected test are continuously measured, and output values are displayed, with no extra effort to the
operator. Also the show waveform feature can be of help: any doubt about strange measurements,
distortion and so on can be solved.
Additional feature: 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 instrument is housed in a transportable aluminium box, which is provided with removable
cover and handles for ease of transportation. The picture shows T2000 without the protection
cover.
The following is the list of available options:
1. Power supply 110 V, to be specified at order;
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DOC. SIE10110 Rev. 6 Page 6 of33
2. Optional high voltage 1200 V, instead of 3000 V (better choice for 5 A rated CT’s), to be
specified at order;
3. T2000E, model with high voltage at 1200 V and the high current output power boosted to
850 VA;
4. Transit cases: moulded plastic or aluminium;
5. Secondary current clamp meter;
6. Local thermal printer;
7. BU2000: very high current booster, for currents up to 4000 A AC, for primary injection tests;
8. High IDC current generator module, up to 400 A DC, for the measurement of joint
resistances;
9. SU3000: protection module for line impedance measurement.
10. FT/100: filter for highly inductive loads, that tend to distort the current waveform.
11. Cables and electrodes kit for the measurement of plant earth resistance, and soil resistivity.
NOTE: WINDOWS is a trademark of MICROSOFT inc.
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2 APPLICABLE STANDARDS
The test set conforms to the EEC directives regarding Electromagnetic Compatibility and Low
Voltage instruments.
A) Electromagnetic Compatibility:
Directive no. 2004/108/EC. Applicable Standard : EN61326-1 + A1 + A2.
EMISSION
- EN 61000-3-2: Harmonic content of power supply. Acceptable limits: basic.
- EN 61000-3-3: Limitation of voltage fluctuations and flicker. Acceptable limits: basic.
- CISPR16 (EN 55011 class A): Limits and measurement methods of radio-electric disturbances for
industrial, medical and scientific instruments at radio-electric frequencies.
Acceptable limits for conducted emission:
. 0.15-0.5 MHz: 79 dB pk; 66 dB avg.
. 0.5-5 MHz: 73 dB pk; 60 dB avg.
. 5-30 MHz: 73 dB pk; 60 dB avg.
Acceptable limits for radiated emission:
. 30-230 MHz: 40 dB (30 m)
. 230-1000 MHz: 47 dB (30 m)
IMMUNITY
- EN 61000-4-2: Immunity tests for ESD. Test values: 8 kV in air; 4 kV in contact.
- EN 61000-4-3; Immunity tests for radio frequency interference. Test values (f= 900 5 MHz):
field 10 V/m, modulated AM 80%; 1 kHz
- EN 61000-4-4; Immunity tests for high speed transients (burst). Test values: 2 kV peak; 5/50 ns.
- EN 61000-4-5; Immunity tests for surge. Test values: 1 kV peak differential mode; 2 kV peak
common mode; 1.2/50 us.
- EN 61000-4-6: immunity to low-voltage sinusoidal waveform. Test values: 0.15-80 MHz, 10
Vrms, 80% AM 1 kHz.
- EN 61000-4-8: Immunity tests for low frequency magnetic fields. Test values: 30 Arms/m.
- EN 61000-4-11: Immunity test for power supply dops. Test value: 1 cycle; 100% drop.
B) Low Voltage Directive:
- - Directive n. 2006/95/EC.
- Applicable standard: EN 61010-1. In particular, for a pollution degree 2: dielectric rigidity 1.4 kV
AC, 1 minute. The rigidity is 4600 V AC 1 minute between the high voltage output and the rest of
inputs and outputs.
- Inputs/outputs protection: IP 2X, per IEC 60529, for all but high voltage outputs; IP4X for high
voltage outputs.
- Operating temperature: 0 to 50 °C; storage: -20 °C to 70 °C.
- Relative humidity : 5 - 95%, without condensing.
- Vibration: IEC 68-2-6 (20 m/s^2 at 10 –150 Hz);
- Shock: IEC 68-2-27 (15 g; 11 ms; half-sine).
- Altitude: less than 2000 m.
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DOC. SIE10110 Rev. 6 Page 8 of33
3 CHARACTERISTICS
3.1 FOREWORD
T2000 incorporates a generator with six outputs. When an output is generated, also all other outputs
are present at sockets, unless for the high AC voltage, that can be generated only if it is selected and
confirmed by a key.
The generator is made of a variable transformer followed by a transformer. The variable
transformer does not reach the zero position; so, when you are adjusting the output current on a low
burden, the minimum current can be up to 5% of the range. If this is a problem on relay tests, select
the 60 VA power: the current is reduced to one fifth.
3.2MAIN GENERATOR
The main generator has six outputs: High AC current; Low AC current; Low DC current; Current
impulses; High AC voltage; Low AC voltage. Output adjustment is performed via a knob. The
following specification applies to the separate usage of these outputs.
3.2.1 High AC current
- Output characteristics: see table below.
CURRENT
OUTPUT
A
OUTPUT
POWER
VA
LOAD
TIME
s
RECOVERY
TIME
min
100
600
STEADY
-
150
800
15 min
30
200
1000
4 min
15
400
1600
15
5
600
2000
5
3
800
2000
1
2
- Connection: two high power sockets, with safety protections.
3.2.2 Low AC current
- Output characteristics: see table below.
1) NOMINAL POWER 300 VA
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RANGE
A AC
CURRENT
OUTPUT
A
OUTPUT
POWER
VA
LOAD
TIME
s
RECOVERY
TIME
min
40
12
300
STEADY
-
18
15 min
30
24
4 min
15
36
800
15
5
48
5
3
60
1000
1
2
10
5
400
STEADY
-
7.5
15 min
30
10
800
60
15
15
30
10
20
1000
15
5
2) NOMINAL POWER 60 VA
RANGE
A AC
CURRENT
OUTPUT
A
OUTPUT
POWER
VA
MAX. TEST
DURATION
s
RECOVERY
TIME
s
40
12
60
STEADY
-
17
10 min
30
23
60
10
36
1
2
10
5
60
STEADY
-
6
10 min
45
7
60
2
10
1,5
2
- Power selection: via menu.
- Connection: three high current safety sockets.
3.2.3 Low DC current
- Output characteristics: see table below.
CURRENT
OUTPUT
A
LOAD
RESIST.
Ohm
OUTPUT
POWER
VA
LOAD
TIME
min
RECOVERY
TIME
min
10
0
0
STEADY
-
3
2
18
STEADY
-
1
8
8
STEADY
-
- Type of DC voltage: unregulated, via diode bridge rectifier and capacitor, plus limiting resistor.
- Output connection: two safety sockets.
3.2.4 Current impulses
Current impulses are only positive; this solves the problem of the ambiguity of secondary impulse
polarity that is found if a DC voltage is used.
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DOC. SIE10110 Rev. 6 Page 10 of33
- Type of waveform: R-C discharge; polarity: positive.
- Current range: from 0 to 10 A peak.
- Repetition rate: a pulse every 3 s.
- Output connection: two safety sockets.
3.2.5 High AC voltage
- Type of generator: variable transformer and high voltage transformer.
- Output characteristics: see table below.
VOLTAGE
OUTPUT
V
CURRENT
OUTPUT
A
OUTPUT
POWER
VA
LOAD
TIME
Min
RECOVERY
TIME
min
3000
2500
0.2
0.6
600
1500
STEADY
1
-
8
- Output connection: two H.V. safety sockets.
3.2.6 Low AC voltage
- The AC voltage is isolated from the high AC current.
- AC voltage range: 250 V.
- Available power and duty cycle: see table below.
- Connection: two safety banana sockets.
RANGE
V AC
VOLTAGE
OUTPUT
V
OUTPUT
POWER
VA
LOAD
TIME
min
RECOVERY
TIME
min
250
250
125
STEADY
-
220
250
3
9
3.2.7 Other features of main outputs
- Zero crossing control. Main AC outputs are generated and stopped as the output waveform is zero.
This implies that in mode ON+TIME the output drops to zero with a delay from 0 to one cycle after
STOP is detected.
- Over-current alarm message.
- Thermal protection: by NTC. The operator is alerted by a message.
- Output adjustment: from less than 5% to 100% of the output.
- Output measurement. The used output is software selected; the selected socket is confirmed by a
light.
3.3 AUXILIARY CONTACT
- Possibility to delay the auxiliary contact switch with respect to test start. Delay range: from 0 to
99.99 s.
- Contacts range: 5 A; 250 V AC; 120 V DC
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3.4TIMER
The electronic digital timer has a fully automatic stop, both for make and break of the input, that
can be either a clean contact or a contact under voltage. All selections are menu-driven via the
multi-function knob.
- Characteristics of Stop input:
.. Input connection: two banana sockets;
.. Input may be selected as Normal Open or Normal Close. It is possible to select timer stop on
input level transition;
.. Type of input: either dry or under voltage; selection via the multi-function knob. Maximum input:
250V AC or 275 V DC;
.. With dry input selection, the wetting voltage is 24 V; the test current is 3 mA nominal;
.. With voltage input selection, two thresholds can be selected: 24 V or 80 V;
.. Selections are displayed on the front panel by 5 dedicated lights;
.. When the input is closed or with voltage an LED turns on;
.. When the relay intervenes the TRIP light turns on;
.. Wrong selection protection. If voltage is applied when clean input is selected, input circuits are
not damaged;
.. Timer start: as the fault is generated.
- Available measurement: elapsed time between test start and STOP input.
- Time can be metered as seconds or cycles. Metering range, in seconds: see table.
Range
Resolution
Accuracy
From 0 to 9.999 s
1 ms
± (1 ms + 0.005%)
From 10.00 to 99.99 s
10 ms
± (10 ms + 0.005%)
From 100.0 to 999.9 s
100 ms
± (100 ms + 0.005%)
From 1000 to 9999 s
1 s
± (1 s + 0.005%)
. Metering range, in cycles, selectable at 50 Hz or at 60 Hz.
Range
Resolution
Accuracy
From 0 to 1,000
(Equal to 19.998 s @ 50 Hz;
16.665 s @ 60 Hz)
0.1 cycles
± (0.1 cycles + 0.005%)
From 1000 to 499,998.5 cycles @ 50 Hz;
From 1000 to 599,998 cycles @ 60 Hz
(Equal to 9999 s)
1 cycle
± (1 cycle + 0.005%)
- Display reset: automatic, at test start.
3.5OUTPUTS MEASUREMENT
3.5.1 Current and voltage
- The displayed measurements follow the test selection.
- Type of measurement: true rms for AC outputs; average for DC outputs.
- Readings, resolution and accuracy: see table. Note that the available ranges can be greater than the
maximum value of the output to which the load is connected: this means that higher values can be
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DOC. SIE10110 Rev. 6 Page 12 of33
measured without saturation. For example, on the 800 A output the measuring range is up to 999 A.
Actually, the test set will not generate more than 800 A, as the test is stopped by the software, that
indicates overload, and on the display currents more than 800 A will not be shown.
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OUTPUT
RANGE
RESOLUTION
ACCURACY
HIGH AC CURRENT
19.99 A
20 mA
± (0.5% + 50 mA)
199.9 A
200 mA
± (0.5% + 400 mA)
999 A
1 A
± (0.5% + 1 A)
LOW AC CURRENT;
10 A
1.999 A
1 mA
± (0.5% + 5 mA)
19.99 A
10 mA
± (0.5% + 20 mA)
LOW AC CURRENT;
40 A
7.999 A
4 mA
± (0.5% + 20 mA)
79.99 A
40 mA
± (0.5% + 80 mA)
VOLTAGE OF LOW
AC CURRENT
19.99 V
20 mV
± (0.5% + 50 mV)
99.9 V
100 mV
± (0.5% + 200 mV)
HIGH AC VOLTAGE;
3000 V
199.9 V
200 mV
± (0.5% + 0.5 V)
1999 V
2 V
± (0.5% + 4 V)
2999 V
3 V
± (0.5% + 6 V)
CURRENT OF HIGH
AC VOLTAGE
19.99 mA
50 uA
± (0.5% + 200 uA)
199.9 mA
200 uA
± (0.5% + 500 uA)
0.999 A
1 mA
± (0.5% + 2 mA)
LOW AC VOLTAGE
250 V AC
19.99 V
20 mV
± (0.5% + 50 mV)
199.9 V
200 mV
± (0.5% + 400 mV)
299.9 V
300 mV
± (0.5% + 600 mV)
CURRENT OF LOW
AC VOLTAGE
19.99 mA
20 uA
± (0.5% + 50 uA)
199.9 mA
200 uA
± (0.5% + 400 uA)
1.999 A
2 mA
± (0.5% + 4 mA)
LOW DC CURRENT
199.9 mA
100 uA
± (0.5% + 200 uA)
1.999 A
1 mA
± (0.5% + 2 mA)
19.99 A
10 mA
± (0.5% + 20 mA)
I IMPULSES
19.9 A
0.1 A
± (5% + 0.5 A)
NOTES:
- The change range is the actual value at which the range is changed. This avoids saturation
problems when we have to measure fast-changing values.
- Metering temperature coefficient: ± 0,05%/°C of the value ± 0,02%/°C of the range.
3.5.2 Phase angle
- Readings, resolution and accuracy: see table.
MEASUREMENT
RANGE
RESOLUTION
ACCURACY
PHASE
0 - 360
1°
1° ± 1 DIGIT *
* Specified accuracy applies to outputs greater than 10% of the selected range.
- Phase angle temperature coefficient: ± 1 ppM/°C of the value.
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3.5.3 Other measurements
Starting from the above measurements, the test set can compute derived measurements, according
to test selection.
The following is the list of available measurements. For all of them the following range and
resolution applies; the accuracy is the sum of voltage, current and possibly angle accuracy.
N.
PARAMETER , AC outputs
DERIVED
FROM
FORMULA
UNITS
1
RATIO, CT or VT or PT
I out, I in or
Vout, V in
R = I out / I in
R = V out / V in
-
2
POLARITY, CT or VT or PT
φI out, I in or
φVout, V in
OK = φ < 10°
-
3
BURDEN, CT
Vout;Iout
VA= IN^2*Vout/Iout
VA
4
VOLTAGE AND CURRENT KNEES
Vout, Iout
VKm, IKm:
according to
standards
V, A
5
Resistance
Iout, Vout
R = Vout/Iout
Ohm
For the CT, VT and PT ratio measurement, the following applies.
- Range: 9999;
- Accuracy: 0.5 typical; 1% maximum.
For the polarity test, the phase shift between the two parameters is tested. Answer is OK if phase
shift is less than 10°.
For the resistance, we measure up to 250 Ohm at 50 mA; the accuracy is: 0.5 typical; 1%
maximum.
3.6EXTERNAL INPUTS MEASUREMENT
- It is possible to meter the current and the voltage of an external (or internal) generator.
- Input connection: by four safety sockets; three for current and two for voltage.
- Metering circuits are isolated between them and from the rest of the instrument.
3.6.1 Current measurement
- Two inputs: 20 mA or 10 A AC.
- Range, resolution, accuracy: see tables below.
RANGE 20 mA
RESOLUTION
ACCURACY
25 mA DC
0.1 mA
± (0.5% + 0.2 mA)
RANGE 10 A
RESOLUTION
ACCURACY
1.999 A AC
1 mA
± (0.5% + 4 mA)
9.99 A AC
10 mA
± (0.5% + 40 mA)
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- Metering temperature coefficient: ± 0,05%/°C of the value ± 0,02%/°C of the range.
- Possibility to display the current waveform.
3.6.2 Voltage measurement
- Two inputs: 10 V or 600 V, AC or DC
- Range, resolution and accuracy: see tables below.
RANGE 10 V
RESOLUTION
ACCURACY
0.199 V AC
1 mV
± (0.5% + 2 mV)
1.999 V AC
2 mV
± (0.5% + 10 mV)
9.999 V AC
10 mV
± (0.5% + 50 mV)
RANGE 600 V
RESOLUTION
ACCURACY
19.99 V AC
10 mV
± (0.5% + 40 mV)
199.9 V AC
50 mV
± (0.5% + 400 mV)
599.9 V AC
300 mV
± (0.5% + 1000 mV)
19.99 V DC
10 mV
± (0.5% + 40 mV)
199.9 V DC
50 mV
± (0.5% + 400 mV)
599.9 V DC
300 mV
± (0.5% + 1000 mV)
- Metering temperature coefficient: ± 0,05%/°C of the value ± 0,02%/°C of the range.
- Possibility to display the voltage waveform.
3.6.3 Other measurements
With relay selection, it is possible to compute measurements on external inputs. In this instance,
measurements available depend upon the AC or DC selection for both inputs (no measurement for
mixed selections).
N.
PARAMETER , AC INPUTS
DERIVED
FROM
FORMULA
UNITS
1
ACTIVE POWER, P
Iext, Vext; φ
P= I*V*cos (φ)
W
REACTIVE POWER, Q
Iext, Vext; φ
Q= -I*V*sin(φ)
VAr
2
APPARENT POWER, S
Iext, Vext
S= I*V
VA
POWER FACTOR, p.f.
φ
p.f. = cos(φ)
-
3
IMPEDANCE, Z and φ
Iext, Vext, φ
Z = V/I
Ohm, °
4
ACTIVE IMPEDANCE COMP., R
Iext, Vext; φ
R = Z* cos(φ)
Ohm
REACTIVE IMPEDANCE COMP., X
Iext, Vext; φ
X = Z* sin(φ)
Ohm
5
FREQUENCY, F
Vext
-
Hz
The angle measurement accuracy is ± 1° ± 1 digit. This accuracy applies to inputs greater than 10%
of the input range, and for frequencies of 50 ± 0,5 Hz, and 60 ± 0,6 Hz. Temperature coefficient: ±
1 ppM/°C of the value.
The frequency measurement accuracy is ± 1 mHz ± 1 digit. This accuracy applies to inputs greater
than 10% of the input range, and for frequencies of 50 ± 0,5 Hz, and 60 ± 0,6 Hz. Temperature
coefficient: ± 1 ppM/°C of the value.
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DOC. SIE10110 Rev. 6 Page 16 of33
For other parameters, the accuracy is the sum of voltage, current and angle accuracies, as
applicable.
PARAMETER , DC INPUTS
DERIVED
FROM
FORMULA
UNITS
POWER, W
Iext, Vext
P= I*V
W
RESISTANCE, R
Iext, Vext
R = V/I
Ohm
With CT or VT or PT selection, the measurement follows the selected test.
3.7DISPLAY
The graphical display has the following main features:
-pixels: 240x128
-backlight color: white
-LCD type: FSTN
-View area: 135x80 mm.
3.8 TEST CONTROL
3.8.1 Relay selection
- Manual start control:
. OFF: main outputs are not generated; Vac aux is generated, and it can be either the pre-
fault value or the fault value, according to selections; VDC aux is generated.
. ON: main outputs are generated; Vac aux has the fault value. In this situation it is possible
to verify and memorize the relay threshold, both trip and reset.
. From OFF to ON + time: main outputs are generated and the timer starts according to
selections; as STOP is sensed, main outputs are removed and the elapsed time displayed and
test result can be memorized.
. From ON to OFF + time: main outputs are removed the timer starts according to selections;
as STOP is sensed, the elapsed time is displayed and test result can be memorized.
- Other test control selections:
. Momentary: in ON mode, main outputs are generated until the push-button is pressed;
. Timed: main outputs are generated for the programmed maximum time;
. External. This mode allows for the synchronization of more T3000;
. OFF delay: fault parameters can be maintained for the specified time after relay trips: this
allows simulating the circuit breaker delay.
- Save selections:
. Automatic saving.
. Test data can be saved after confirmation. After relay trip, pressing the multi-function knob
it is possible to save the test result.
3.8.2 Transformers selection
- The LED by the side of the selected output turns on: this helps the operator not to mistake test
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DOC. SIE10110 Rev. 6 Page 17 of33
- Test control: by two push-buttons: OFF an ON.
- OFF: all outputs are not generated.
- ON: outputs are generated, according to the selected test. During ON, the selected parameter is
adjusted to the desired value. The OK signal blinks 3 s after the parameter did not change any more,
and tells the operator that the test is finished. At this moment outputs are cut off, and the operator is
warned to set back to zero the adjustment knob.
3.9MENU SELECTIONS
The following is the list of features which are menu selected. The menu is operated by means of the
control knob marked MENU, which incorporates a switch. The menu is entered pressing the knob
and selecting the item moving the knob. Once the item has been found and programmed, pressing
the arrow the menu moves back of one step, so that other programming can be performed; else,
selecting ESC the menu returns to the main window.
The first selection is RELAY or TRANSFORMERS; after this, the corresponding selections are
accessible.
Any setting can be saved to and recalled from the memory. Up to 10 settings can be stored and
recalled; setting no. 0 is the default one, and pops up at power-on. Settings are permanently stored
in the memory; new settings can be written to the same address after confirmation. For normal
mode operation it is possible to recall the standard setting, which cannot be modified.
During the test, test results can be stored in the memory (up to 500 results may be stored). At the
end of test, settings and test results can be transmitted to a PC provided with TDMS. The software
allows saving test results, examining them and so on. The specification of TDMS is given in a
separate document.
When the PC is connected, settings can also be created and transferred into T2000 using TDMS.
The following table summarizes all tests and the corresponding performances.
3.9.1 Relay selection
During menu selections the display shows output measurements, in reduced format. After
confirmation, menu messages disappear, and measurements are displayed in the standard format.
The flux diagram of menu selections can be found in Appendix 1.
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LEVEL1
LEVEL 2
LEVEL 3
LEV. 4
FUNCTION
TEST
CONTROL
Test
mode
Normal (default)
Measures the time delay from test START to
STOP (internal, external).
Trip + pulse time
Measures the time delay from test START to
STOP (internal, external), and the duration of
STOP.
Fault
injection
Maintained (default)
Generation lasts indefinitely
Momentary
Generation lasts until the ON button is pressed
Timed
Max time
Generation lasts for the pre-set time duration. Max
time 999 s.
OFF
delay
T delay
The main output OFF is delayed by the set amount
of time or cycles.
Output
power
300 VA (default) –
60 VA
Selection of full (300 VA) or reduced (60 VA)
power
Save
Don’t save (default)
Test data are not saved
Automatic, at trip
As relay trips data are saved to the next memory
location
Confirm, at trip
As relay trips data can be saved, after confirmation
Manual
When selected, generated values are saved.
Auxiliary
contact
Timing
Sets the contact timing with respect to test start
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LEVEL
1
LEVEL
2
LEVEL
3
LEVEL
4
FUNCTION
TIMER
STOP
Stop
INT
Timer stops when the current of the main generator
is interrupted.
EXT
(def.t)
NO-NC-
EDGE (def.t)
Timer stops when the STOP input is detected.
External STOP input Normally Open or Normally
Closed or Both (EDGE).
CLEAN-24 V
–80 V
Timer stops when the STOP input is detected.
External STOP input without or with voltage. If
with voltage, two voltage thresholds are available:
24 or 80 V.
Timer
s (default)
Time duration metered in seconds
cycles
Time duration metered in cycles
LEVEL 1
LEV. 2
LEVEL 3
LEVEL 4
FUNCTION
METERS
Internal
Units of I
Normal
If selected, current values are displayed
in A.
I/IN
IN
If selected, displayed values are defined
as I/IN, that can be defined.
Units of V
Normal
If selected, voltage values are displayed
in V.
V/VN
VN
If selected, displayed values are defined
as V/VN (phase voltage), that can be
defined.
External
I
Enabled
AC (default) - DC
With selection AC the meter performs
the true rms measurement; with
selection DC, the measurement is
performed on the average.
10A –20 mA
Selects the current input socket
Waveform
If selected, the current waveform is
displayed
External
V
Enabled
AC (default) - DC
With selection AC the meter performs
the true rms measurement; with
selection DC, the measurement is
performed on the average.
Shunt : 1 –1000 mOhm
If the voltage is coming from a current
dropping on a shunt, specifying the
shunt value the current is displayed;
default 100 mOhm.
Waveform
If selected, the voltage waveform is
displayed
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LEVEL1
LEVEL
2
LEVEL 3
FUNCTION
METERS
(continued)
Other
external
None (default)
No extra measurement displayed
Active power
P; W
Reactive power (AC)
Q; VAr
Impedance module
Z, Ohm
Impedance argument
φ, °
Active impedance
component
R, Ohm
Reactive impedance
component (AC)
X, Ohm
Phase, I (AC)
φ, Vmain-Iext; reference Vaux
Phase, V (AC)
φ, Vmain-Vext; reference Vaux
Apparent power (AC)
S; VA
Power factor
p.f. = cos φ(V-I)
Frequency of V (AC)
f, Hz
LEVEL1
LEVEL 2
LEVEL 3
LEVEL 4
FUNCTION
RESULTS
Display
Display selected result
Delete
Delete selected result
Print
Print selected result
CONFIGU-
RATION
Settings
Save to address
1..10
Saves current settings to X
Restore address
1..10
Restores settings from X
Restore default
1..10
Restores default settings
Language
To be specified at order
Display
Speed
Slow
The displayed value is refreshed every
1000 ms
Fast
The displayed value is refreshed every
300 ms
Hold mode
Hold trip
As relay trips, test data measured 4
periods before trip are held.
Hold min
As relay trips, the minimum value
within 0.5 s is held.
Hold max
As relay trips, the maximum value
within 0.5 s is held.
Note: measurements marked AC apply only if both inputs are selected as alternate current.
3.9.2 Transformers selection
With this selection, you can choose the desired type of test. After entering the selection, the
operator can input the relevant parameters, still by using the multi-function knob: turning it allows
changing the parameter; pressing it makes it possible to go to next parameter.
Once all parameters are set, it is possible to start the test and execute it. Test time is kept to the
minimum to avoid the excess of heating. The following table summarizes all tests and the
corresponding performances.
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DOC. SIE10110 Rev. 6 Page 21 of33
TEST
OF
TEST
DESCRIPTION
INPUT DATA
CONN. OUT
CONN. IN
MEASUREMENTS
CT
N. 1
Ratio Voltage mode
- I primary;
- I secondary
(nominal values)
- Voltage output
- Voltage input
High/Low V AC
to CT
secondary
CT primary
to low or high
Vin
1) High / Low VAC out;
2) Low V in;
3) Polarity;
4) Actual ratio;
5) Ratio error %;
and excitation curve, if
selected
CT
N. 2
Ratio, polarity and
burden
- I primary;
- I secondary
(nominal values);
- Clamp Y/N;
- Clamp ratio;
- Voltage input.
High I AC
to CT primary
CT secondary
to high I in;
(Low Iin with
Clamp);
CT secondary to
Vin low or high.
1) High I AC out (primary);
2) I in (secondary);
3) Nominal ratio;
4) Actual ratio;
5) Ratio % error;
6) Polarity
7) VA rating
8) Power factor;
CT
N. 3
Burden, secondary
side
- IN secondary
(nominal value);
- Voltage input.
- Current output
Low I AC to
CT burden
CT burden to Vin
1) I out (secondary);
2) V out (secondary);
3) Phase V-I out (secondary);
4) Power factor;
5) VA rating;
CT
N. 4
Excitation curve
- Voltage output
- I nom secondary
- VA rating
- Accuracy class
- Overload
- Internal loss
- Standard (IEC,
ANSI: see NOTE)
High V AC to
CT secondary
1) High V AC out;
2) I out of High V AC;
3) Iout-Vout curve;
4) Current at knee, IKm;
5) Voltage at knee, VKm
CT
N. 5
Winding or burden
resistance
- Temperature
compensation Y/N
- Ambient and target
temperatures
Low I DC to CT
burden or
winding
CT burden to Vin
1) Low I DC out;
2) V of lowI DC out;
3) Resistance;
4) Compensated resistance
CT
N. 6
Voltage withstand
- Max High V AC ;
- Max I test
- Tmax
High V AC to:
Primary and
secondary;
1) High V AC out;
2) I out of High V AC ;
3) Elapsed Time
CT
N. 7
Polarity by impulses
Low IDC to CT
primary
CT sec. to Iin
1) I DC out;
2) I secondary;
3) Polarity
NOTE: for the excitation curve test, the following standards apply:
1. IEC 60044-1; paragraph 14.4.1. The knee point is the voltage at which the increase of 10% of
voltage causes the increase of the 50% of the exciting current.
2. ANSI C57.13.1; chapter 9. When you plot a log-log diagram with the excitation current on the X
axis and the exciting voltage on the y axis, the knee point is the one where the tangent of the curve
is at 45°.
3. ANSI C57.13.1; chapter 9. When you plot a log-log diagram with the excitation current on the X
axis and the exciting voltage on the y axis, the knee point is the one where the tangent of the curve
is at 30°.
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