ISA STS 4000 User manual

S PECIFICATIONS
DOCUMENT No. SIE10175, Rev. 14, «Date»
STS + TD 5000 FAMILY
for the test of CT, VT and PT
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T ABLE OF CONTENTS
SPECIFICATIONS 1
1 GENERAL 7
2 APPLICABLE STANDARDS 17
3 CHARACTERISTICS 19
3.1 F OREWORD ............................................................................................................................................................ 19
3.2 M IN GENER TOR ................................................................................................................................................... 19
3.2.1 High AC current ........................................................................................................................................... 20
3.2.2 High DC current ........................................................................................................................................... 20
3.2.3 Low AC current ............................................................................................................................................ 21
3.2.4 Low DC current ............................................................................................................................................ 21
3.2.5 High AC voltage ........................................................................................................................................... 22
3.2.6 Low AC voltage ............................................................................................................................................ 23
3.2.7 High power output to the external odules ............................................................................................... 24
3.2.8 Output frequency ........................................................................................................................................ 24
3.2.9 Other features of ain outputs ................................................................................................................... 24
3.3 O UTPUTS ME SUREMENT ......................................................................................................................................... 25
3.4 E XTERN L INPUTS ME SUREMENT .............................................................................................................................. 25
3.5 T IMER ................................................................................................................................................................... 26
3.6 P H SE NGLE ......................................................................................................................................................... 26
3.7 O THER ME SUREMENTS ........................................................................................................................................... 27
3.8 D ISPL Y ................................................................................................................................................................. 29
3.9 T EST CONTROL ........................................................................................................................................................ 29
3.10 M ENU SELECTIONS ............................................................................................................................................... 30
3.11 S T ND RD CONNECTION C BLES (L ONG C BLES CODE PII16175 ND EXTR LONG C BLES CODE PII57175) ........................ 47
3.12 O THER CH R CTERISTICS ....................................................................................................................................... 48
4 OPTIONS 49
4.1 T R NSIT C SES ( CODE PII17175, PII 19175, PII51175) .............................................................................................. 49
4.2 P DS LICENCE ( CODE PII10176P, PII10176F, PII10176T) ......................................................................................... 50
4.3 R EMOTE S FETY S WITCH ( CODE PII42175) ................................................................................................................. 51
4.4 W RNING S TROBE L IGHT ( CODE PII43175) ................................................................................................................. 51
4.5 STCS UTOM TIC CONNECTION WINDINGS MODULE ( CODE PII12175) ............................................................................. 52
4.6 STCS POWER GENER TOR B OOSTER 20 DC ( CODE PII32175) ..................................................................................... 53
4.7 STDE RESIDU L M GNETIZ TION REMOV L MODULE ( CODE PII27175) ............................................................................ 54
4.8 STS S URGE RRESTER ( CODE PII46175)................................................................................................................... 55
4.9 BUX 3000, BUX 2000 CURRENT BOOSTER ( CODES PII50175, PII56175)....................................................................... 55
4.10 C URRENT C L MP ( CODE PII16102) ........................................................................................................................ 57
4.11 PLCK P OL RITY C HECKER ( CODE PII41175) ............................................................................................................ 58
4.12 STLG CURRENT INJECTION POWER TR NSFORMER FOR GROUND TESTS ( CODE PII70175) .................................................. 58
4.13 P OWER F CTOR CORRECTION MODULE ( CODE PII85175) ........................................................................................... 59
4.14 STLG L RGE ST TION ( CODE PII88175) .................................................................................................................. 60
4.15 STSG S FETY GROUNDING MODULE ( CODE PII71175) ............................................................................................... 62
4.15.1 Cylindrical studs ....................................................................................................................................... 63
4.15.2 Surge arrester for STSG (code PII77175) .................................................................................................. 63
4.16 G ROUND G RID T EST CCESSORIES K IT ( CODE PII76175) ............................................................................................ 64
4.17 C URRENT C L MP M ETER ( CODE PII79175) ............................................................................................................. 65
4.18 F OLD BLE T ROLLEY ( CODE PII18175) ..................................................................................................................... 66
4.19 TD 5000 MODULE FOR THE T N ( Δ ) LOSS NGLE F CTOR ME SURE ( CODE PII11175) ...................................................... 66
4.20 C P-C L REFERENCE C P CITOR ( CODE PII40175) .................................................................................................. 72
4.21 STOIL CELL FOR THE INSUL TING OIL CHECK ( CODE PII13175) ..................................................................................... 73
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4.22 D IGIT L T HERMO H YGROMETER ( CODE PII44175) .................................................................................................... 73
4.23 RCTD RE CTOR FOR MOTORS ND GENER TORS ME SURES (C ODE PII47175) ............................................................... 74
5 PROTECTIONS 76
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Disclaimer
Every effort has been made to make this material complete, accurate, and up-to-date. In addition, changes are
periodically added to the information herein; these changes will be incorporated into new editions of the publication.
IS reserves the right to make improvements and/or changes in the product(s) and/or the program(s), described in this
document without notice, and shall not be responsible for any damages, including but not limited to consequential
damages, caused by reliance on the material presented, including but not limited to typographical errors.
Copies, reprints or other reproductions of the content or of parts of this publication shall only be permitted with IS
prior written consent.
ll trademarks are the property of their respective holders.
Copyright 2015© IS S.r.l. Italy - ll rights reserve
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1G ENERAL
The portable, high accuracy test sets of the STS family allow performing all tests foreseen by international Standards on
CTs, measurement VTs, Power Transformers, and to measure the Tan(δ), dissipation factor and capacitance of any
device. With the option STLG + STSG it is also possible to execute the Earth resistance and Step and Touch voltage
measurements.
The following table lists the models of the STS Family:
Model Description
STS 5000 It is the most performing test set of the STS family of devices. It allows executing all
listed tests
STS 4000
It is the same as STS 5000, unless the high C and DC current generators. High C
current tests can be performed using the BUX 3000 option; micro-Ohm metering is
not available
STS 3000 light It allows performing Tan(δ) tests with the option TD 5000
Table 1 - STS Fa ily odels
The following table summarizes the differences among the models:
Model High current, AC
& DC High voltage Low Ac-DC outputs
Optional Tan(δ)
tests
TD 5000
Optional High AC
current
BUX 3000
STS 5000 X X X X X
STS 4000 X X X X
STS 3000
light X
Table 2 - Differences a ong the STS Fa ily odels
Keyboard, dedicated keys, control knob and display can control all test sets of the family locally. Test results and settings
can be saved in a PC by the software suite TDMS, which comes with the device. The optional P DS program allows also
controlling the device from the PC.
The following table lists the tests performable by the Current Transformers:
No Test STS 5000 STS 4000 STS 3000 light
1 Ratio Polarity and Burden X
+BUX
+Manual Measure
+BUX
+Manual Measure
2 Burden Secondary Side X X
3 Excitation Curve X X
4 Winding or Burden Resistance X X
5 Voltage Withstand X X
6 Polarity Check X
7 Ratio Polarity Voltage Mode X X
8 Rogowski (Ratio) X
+BUX
+Manual Measure
+BUX
+Manual Measure
9 Low Power (Ratio) X
+BUX
+Manual Measure
+BUX
+Manual Measure
10 Tangent δ TD 5000 TD 5000 TD 5000
11 Ratio IEC61850-9-2LE X
Table 3 - Current Transfor er tests
BUX is the BUX 3000, BUX 2000 option, for high current injection tests. The Ratio test for Not-Conventional transformer
with the option IEC61850-9-2LE is available only in remote control mode, using the P DS software.
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The following table lists the tests performable by the Voltage Transformers:
No Test STS 5000 STS 4000 STS 3000 light
1 Ratio X X
2 Ratio Electronics X X
3 Burden X X
4 Voltage Withstand X X
5 Polarity Check X
6 Tangent δ TD 5000 TD 5000 TD 5000
7 Ratio IEC61850-9-2LE X X
Table 4 - Voltage Transfor ers tests
The Ratio test for Not-Conventional transformer with the option IEC61850-9-2LE is available only in remote control
mode, using the P DS software.
The following table lists the tests performable by the Power Transformers:
No Test STS 5000 STS 4000 STS 3000 light
1 Ratio X X
2 Winding Resistance X X
3 Winding Resistance – uto X X
4 Voltage Withstand X X
5 Short-Circuit Impedance X X
6 No-Load Current X X
7 Tangent δ TD 5000 TD 5000 TD 5000
8 Demagnetizer X X
Table 5 – Power Transfor ers tests
The following table lists the tests performable by the Circuit Breakers:
No Test STS 5000 STS 4000 STS 3000 light
1 Resistance - μΩ X
2 Tangent δ TD 5000 TD 5000 TD 5000
Table 6 - Circuit Breakers tests
The following table lists the tests performable by the Resistances:
No Test STS 5000 STS 4000 STS 3000 light
1 Resistance - μΩ X
2 Earth Resistance X X
3 Soil Resistivity X X
4 Step and Touch X X
5 Line Impedance X X
Table 7 – Resistances tests
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The test Ratio IEC61850-9-2LE can be executed only in remote mode, using the P DS software.
Tests are performed in accordance with the following standards:
•IEC EN 60044-1
•IEC EN 60044-2
•IEC EN 60044-5
•IEC EN 60044-7
•IEC EN 60044-8
•IEC EN 61869-x
•IEC EN 60076-1
•NSI/IEEE C57.13.1
Earth resistance and step and touch tests are performed according to the following standards:
•IEC EN 20522:2011
•IEEE 80:2000
•IEEE 81:1983
•DIN VDE 0101
•CENELEC HD 63761
STS Family has the facility to test not conventional CT, VT, Merging Unit (MU), by the IEC 61850-9-2 (SV) protocol.
STS Family generates current or voltage and injects these quantities into primary side of the CT or VT under test.
STS Family then reads the data from the network using its Ethernet port (Sample Values) in order to perform a variety
of different tests, as CT ratio and polarity up to 800 or up to 2000 (with BUX 2000) or 3000 (with BUX 3000). It is
also possible to check the VT ratio and polarity, up to 2 kV. Test of MU.
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The following table lists the optional modules enhance the STS features:
Item Option Code Description
1 Transit Cases
PII17175
PII19175
PII51175
They allow transporting the device
2 P DS license
PII10176P
PII10176T
PII10176F
PC Remote control of the test set
3 Remote Safety Switch PII42175
When the Remote Safety Switch is connected and enabled, it avoids any
current or voltage generation from pressing ST RT/STOP button on the STS
only
4 Warning Strobe Light PII43175 It alerts when the test is performed
5 STCS PII12175
The Circuit Switch option performs the automatic measurement of the
following parameters: PT transformer ratio, PT winding resistance, OLTC
dynamic winding resistance
6 STCS Booster 20 DC PII32175
The Circuit Switch option performs the automatic measurement of the
following parameters: PT winding resistance up to 20 DC, OLTC dynamic
winding resistance up to 20 DC
7 STDE PII27175 It allows neutralizing the residual magnetization of the power transformer core
after the winding resistance test
8 STS PII46175 The option limits voltage surges generated on the 10 V input
9 BUX 3000
BUX 2000
PII50175
PII56175 This option performs high current tests, with currents up to 3,000 or 2,000
10 Current Clamp PII16102 The current clamp avoids opening the secondary current circuit when
performing the primary test of CT burden
11 PLCK PII41175 Sawtooth signal detector for CT/VT polarity test
12 STLG PII70175 It is a high power transformer for the current injection for the Line Impedance
and Step and Touch tests
13 Power factor correction
module PII85175 It is a module to increase the current in the grounding and step and touch tests
14 STLG large stations PII88175 It is a high power transformer for current injection into transmission lines for
large stations
15 STSG PII71175 This option is used for the test of overhead lines parameters
16 Ground Grid test
accessories kit PII76175 The kit includes some accessories to perform the Soil Resistivity test, the Earth Resistance test and the Step and Touch test
17 Current Clamp Meter PII79175 This option is used to check the induced current in the transmission line
18 Foldable Trolley PII17175 The trolley eases the transport of STS + TD 5000
19 TD 5000 PII11175 It performs the measurement of the Tan(δ), capacitance and Power factor of
any device, at the frequency of the mains or in a wide frequency range
20 C P-C L
(for TD 5000) PII40175 Purpose of the reference capacitor is to check the actual calibration of TD for the measures of the capacitance and Tan(δ)
21 STOIL
(for TD 5000) PII13175 The oil cell is for Tan(δ) measurement of PT oil
22
Digital thermo
hygrometer
(for TD 5000)
PII44175 The option allows measuring ambient temperature and humidity, and to input
them into the test settings, if it is necessary
23 RCTD
(for TD 5000) PII47175 Compensation Inductor for high current Tan(δ) test on motors and generators
Table 8 - Optional odules
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The basic STS function is to generate current and voltages, as requested by the type of test to be performed; only one
test at a time. The test is selected on the LCD screen by means of the multi-function knob. Test results are kept in local
memory or in a USB card, and can be transferred to a PC later, along with settings.
The capacitance and Tan(δ) measurements with TD 5000 can be performed on CTs, VTs, CBs, PTs and bushings.
STS 5000 contains a generator, with the following six outputs:
•High C current
•Low C current
•High DC current
•Low DC current
•High C voltage
•Low C voltage
In addition, there is a high power C voltage output, not isolated from the mains, which supplies the external options
(TD 5000, BUX 2000, BUX 3000, STLG, STCS Booster 20 DC).
In local control mode, the selected output is adjustable and metered on the large, graphic LCD display. With the control
knob and the LCD display it is possible to enter the MENU mode, which allows setting many functions: this makes STS a
very powerful testing device, with manual and automatic testing capabilities, and with the possibility to transfer test
results to a PC via USB, ETHERNET or Pen Drive.
In the PC control mode, the P DS program allows performing the same tests as in the local mode, with the same control
windows. It allows also downloading, displaying and analyzing test results obtained in local mode.
P DS operates with all WINDOWS versions.
The ease of operation has been the first goal of STS: this is why the LCD is graphic, and so large. With it, the dialogue in
menu mode is made easy. Besides, all STS outputs relevant to the selected test are continuously measured, and output
values are displayed, with no extra effort to the operator.
STS feature four measurement inputs:
•DC voltage, up to 10 V DC
•C or DC voltage
•High range, up to 300 V
•Low range, up to 3 V
•C or DC current, up to 10
ll inputs, unless the 3 V and 300 V voltage measurements, are isolated among them, and allow measuring CT or VT
outputs or any other source.
In all STS models, it is available a digital input, which accepts an input, which can be voltage free, or with a voltage up
to 300 V. It allows measuring the time response of a protection relay. It is also possible to test the M.V. CB’s timing: the
time is stopped when the injected current is opened by the CB.
The instrument is housed in a transportable aluminum box, which is provided with removable cover and handles for
ease of transportation. n optional trolley is also available.
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The following image exhibits the STS 5000 as an example of the model of the family, with the protection cover lifted:
Figure 1 - STS 5000
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