“Emak Group Middle East" LLC - STS 4000 TD Comprehensive testing system for transformers and substation equipment - Techimp - Altanova group Казахстан - Instruments for testing and diagnostics of power transformers

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STS 4000 TD Comprehensive testing system for transformers and substation equipment

Article number: ENRGSKN-17

STS 4000 TD Comprehensive testing system for transformers and substation equipment - Techimp - Altanova group

The STS-4000 TD system is designed for inspection and electrical testing of power transformers, current transformers, voltage transformers, high-voltage circuit breakers, generators, grounding devices and other primary and secondary equipment. The high automation of the STS-4000 device allows you to speed up the testing process and reduce the number of possible errors. Combining the STS-4000 device with additional modules can significantly expand the functionality of the system.

STS-4000 TD - a comprehensive testing system for substation equipment manufactured by ISA (Italy) is designed to conduct automatic comprehensive electromagnetic and dielectric tests of power transformers, current transformers (CT) and voltage transformers (VT). The device also allows you to conduct a number of tests of high-voltage switches, relay protection devices, grounding devices and overhead lines.

The difference between the STS-4000 system and the STS-5000 is the absence in the STS-4000 of high-current outputs of 800 A alternating current and 400 A direct current, and, accordingly, the impossibility of conducting a number of CT and VT tests without these outputs.

The operator is required to assemble a measurement scheme, enter the parameters of the test object, tolerances, select the required test and press the test start button. The device automatically carries out the test, generating and measuring all the necessary quantities and recording the results in memory. Test results are stored in local memory and can be transferred to a PC for storage, analysis and report generation.

The STS-4000 device is controlled in two ways:

- without PC: via own controls and large color LCD display,

- using a PC and TDMS software.

TD-5000 is a module used in conjunction with the STS-5000 device to measure the dielectric loss tangent and capacitance of transformers. The module generates voltage up to 12 kV with the ability to change the generation frequency from 1 to 500 Hz. Both units and cables are mounted on a trolley for ease of transportation. The use of unique circuit designs and the ability to test at frequencies other than 50 Hz ensure high accuracy measurements even in the most difficult electromagnetic conditions.

Power transformers	-Transformation coefficient, - Ohmic resistance of the windings (including recording resistance in dynamic mode when switching the on-load tap-changer) - No-load current	- Short circuit resistance -Demagnetization of the magnetic circuit - Determination of the circuit and group of winding connections - Measurement of dielectric loss tangent and capacitance
Current transformers	- Transformation ratio (current method), only with BUX option; - Transformation ratio (voltage method) - Secondary side load resistance - Magnetization characteristic	- Winding resistance, - High voltage test of secondary circuits - Measurement of dielectric loss tangent and capacitance
Voltage transformers	- Transformation ratio, polarity - Secondary side load resistance, - Transformation ratio of electronic transformers	- High voltage test - Measurement of dielectric loss tangent and capacitance
High voltage circuit breakers	- Measurement of dielectric loss tangent and capacitance
Generators and engines	- Measurement of dielectric loss tangent and capacitance of objects with high capacitance
Grounding devices	- Ground resistance and soil resistivity	- Step voltage and ground voltage
Air Lines	- Impedance measurement to calculate distance protection relay settings

OPTIONAL EQUIPMENT:

STCS / STCS Plus -Switch	The switch allows the STS 5000 to conduct electromagnetic tests in automatic mode: - STCS: transformation ratio, ohmic resistance of windings, short-circuit resistance, XX current at voltages up to 300 V - STCS Plus: transformation ratio, XX current, ohmic resistance of windings, short-circuit resistance, demagnetization at voltages up to 400 V. Measurements are taken on all three phases of the low and high side of the power transformer. During testing, repeated climbs of personnel onto the transformer for recommutations are not required. Also, the STCS switch can control the operation of the on-load tap-changer and make checks on all branches.
STDE – Degaussing module	The module allows you to demagnetize the magnetic circuit to obtain the correct results of the XX experiment or to measure the frequency response (FRA)
20 A DC STCS – Current amplifier	The module allows you to measure the resistance of transformer windings using a STCS/STCS Plus switch with a direct current of up to 20 A
Kit "Grounding"	The kit is a set of accessories for measuring grounding resistance and soil resistivity.
Set “Step and Touch Tension”	The kit is a set of accessories for measuring ground resistance, soil resistivity and touch and step voltage.
Line Impedance Kit	The kit is a set of accessories for measuring line impedance.
PLCK – Polarity Measuring Module	The module is designed to measure the polarity of the load connection of secondary circuits of CT and VT.
BUX 2000/3000/5000-AC load transformer	The BUX AC load transformer allows the STS-5000 to perform primary current testing up to 2000/3000/7000 A. The transformer generates high current at low voltage and transmits the measured data to the STS5000.
STOIL - Oil Loss Tangent Cell	The cell allows you to measure the dielectric loss tangent of liquid dielectrics, such as transformer oil. The cell is connected to the TD-5000 unit, the results are transmitted to the STS-5000.
RCDT – Compensating Reactor	Compensating reactor module for measuring dielectric loss tangent and capacitance of rotating machines

High voltage AC output

Output voltage	2000 V
Max. power	2500 W
Measurement error	< (0.05% reading + 0.05% span) typical

Low current AC output

Output current	6 A / 3 A
Output voltage	70 V / 140 V
Max. power	360 VA

Low current DC output

Output current	6 A
Output voltage	65 V
Max. power	360 W

Low voltage AC output

Output current	140 V / 70 V
Max. power	420 VA

Common to current and voltage outputs

Frequency range	15 … 500 Hz
Frequency resolution	10 m Hz

Measuring inputs

AC input	10 A < (0.05% of reading + 0.05% of range)
DC input	10 A < (0.03% of reading + 0.08% of range)
AC input 1	300 V < (0.05% of reading + 0.05% of range)
AC input 2	3 V < (0.03% of reading + 0.08% of range)
DC input	10 V < (0.03% of reading + 0.08% of range)

Phase angle measurement

Range	0 – 360°
Permission	0.01°
Error	<0.1°

Discrete input

Digital inputs (quantity)	1
Contact options	"dry"; live (AC, DC)
Time measurement resolution	1 ms

Display

Type	TFT LCD Color
Permission	640 x 480
Display size	132 x 99 mm

Communication Interfaces

Ethernet	Eat
USB for PC connection	Eat
USB for connecting a USB flash drive	2 pcs

Dimensions and weight

dimensions	450 x 400 x230 mm
Weight	29 kg

Temperature Range

Storage temperature	-20 … 70° C
Working temperature	-10 … 55° C

Dielectric loss tangent measurement

Module name	TD 5000
Maximum voltage	12000 V
Maximum output current	300 mA
Frequency	1…500 Hz
Impedance measurement	1 kOhm – 1400 MOhm (0.5% of measured value)
Power measurement	10 kW/100 kV/1 MV (0.5% of reading + 1 mW)
Dimensions	440 x 345 x210 mm
Weight	25 kg