1 Product Overview

5/11/2018 1 Product Overview - slidepdf.com

http://slidepdf.com/reader/full/1-product-overview 1/4

1 DR. STRAUSS SYSTEM-ELEKTRONIK GMBHD-96163 Gundelsheim/Bamberg

Phone +49 951-43063Fax +49 951-43858

INFO www.strauss.deemail dr.strauss@ strauss.de

TRAS F1-E 10/09/2008

DR. STRAUSS

Impulse MeasurementCalibration - Diagnosis

www.strauss.de

Impulse VoltageTest -Technique

Measurement – Calibration – Diagnosis

www.strauss.de

Impulse Voltage Test TechniqueProduct Overview

Measuring Rack MIRA 2519” TFT DisplayKeyboard with trackball in drawerColor Laser Printer in drawerMeasuring rack mount with 1 to 4 channelsDirect input 100 mV to 10 V on frontInput 10 V to 2000 V on frontMeasuring line bushings to the rearsuitable for i.v. tests and calibrations in thetest field with high electromagnetic distorti-ons

http://www.strauss.de/







2DR. STRAUSS SYSTEM-ELEKTRONIK GMBHD-96163 Gundelsheim/Bamberg

Phone +49 951-43063Fax +49 951-43858

INFO www.strauss.deemail dr.strauss @ strauss.de

TRAS F1-E 10/09/2008

DR. STRAUSS


www.strauss.de

Digital Impulse Voltage Measuring SystemsTR-AS 60-10-12 / 100-8-10-12 / 200-12-14 / 400-12

Product Overview

Already in 1987, the first TR-AS 100-8 Digital Recorder was delivered to customersfor h.v. impulse tests and was therefore the first system with 100 MS/s sampling ra-te, which fulfilled all requirements of the IEC 1083-1, published later in 1991.

A short time later in 1989 followed the TR-AS 100-10 Digital Recorder as the leadingsystems with 100 MS/s sampling rate at 10 Bit resolution which fulfilled all require-ments of IEC 1083-1 in all respects for comparative measurements, too.

The first competitor system with a sampling rate of 100 MS/s as required in IEC1083-1 followed with 120 MS/s and 12 Bit resolution years later in 1997, when wefinished the design of the TR-AS 200-12 Digital Recorder with 200 MS/s samplingrate and 12 Bit resolution. End of 2002 we presented a new designed system with200 MS/s and 14 Bit resolution and further significantly reduced noice.

Highest performance with 60 up to 200 MS/s sampling ra-te and 8 to 14 Bit resolution

200 MS/s reduces measuring uncertainty – 12 to 14 Bit show details of measured waves

The higher sampling rate of 200 MS/s (5ns sampling intervall instead of 8 or 10 ns) show increased accuracy and reduced standard deviationsfor the front time of full impulses as also for the peak and the time-to-chopping at front chopped impulses during calibration. The influence of

the increased resolution from 10 Bit (0.1%) to 12 or 14 Bit (0.006 %) to the resulting overall measuring uncertainty of approx. 0.5% to 0.7% ishereby negligible.

TR-AS 200-14: The

static integral non-linearity INL referredto 14 Bit resolutionshows at 200 MS/s anexcellent lapse andstays signifikant insidethe required limits of ±0,5% in IEC 1083-1.The INL influences

directly the measuring accuracy as also the calibration re-sults.The INL influences directly the measuring accuracyas also the calibration results.

A careful design using sophisticated programmable logiccontrollers and SMT optimizes the demanding require-

ments like high sampling rate, small risetime, minimizednoise, short settling time, small measuring uncertainty andgood long-term accuracy.

This results in nearly smooth waveshapes without visiblequantization steps and significantly improves the accuracyof diagnosis using difference method or transfer function.

The patented multi-timebase allows setting of up to 8 indi-vidual sampling rates each with a selectable number ofsamples, so individual time profiles can be generated, e.g.a profile similar to an exponential timebase.

As an option, for multichannel applications in the high po-wer test field, the sampling rate of each individual channelcan be indepently selected. With this option fast tran-sients and slow events can be recorded with reference toa common trigger event and displayed together on the

monitor.Application: Precise Measurements in large High Voltage and High Power Testfields, Monitoring in Substations, On-Site-Measurements and Diagnosis

The well-established Impulse Voltage Measuring SystemsTR-AS, including the digital recorders from our own deve-lopment and manufacturing, were consequently further de-veloped and now feature improved sampling rates up to200 MS/s in real-time with 14 Bit resolution simultaneouslyin up to 16 measuring channels.

The new developed composit A/D-converter hardwaresystem generates raw data with upto 14 Bit resolution to-gether with the highest available sampling rate of 200 MS/ s today – and optionally 400 MS/s with 10 to 12 Bit reso-lution is available for steep i.v. tests.

Desktop-Housing DERA 612” TFT Color DisplayKeyboard with trackball in drawerMeasuring rack mount with 1 to 4 chan-nelsDirect input 100 mV to 10 V on rearInput 10 V to 1600/2000 V on rearsuitable for i.v. tests and calibrations inthe test field and on site

Performance progress of Digital Recorder

in the last 16 years

0

20

40

60

80

100

120

140160

180

200

220

I E C

1 0 8 3 - 1

R e q u i r e m . 1 9 9 1

T R - A S 1 0 0

1 9 8 7

H I A S 7 4 2

P o w e r P r o

T R - A S 1 0 0

1 9 8 9

T R - A S 2 0 0

1 9 9 7

H I A S

7 4 3 1 9 9 7

T R - A S 2 0 0

1 9 9 7

T R - A S 2 0 0

2 0 0 3

MS/s, MHz

0

2

4

6

8

10

12

1416

18

20

22

Bit

SampleRate MS/s

Bandwidth MHz

Resolution Bit

+0,5% Limit IEC 1083

-0,5% Limit IEC 1083

TR-AS RC Remote Control Housingfor connection via LAN (green) to the host computer (PC or Laptop)Measuring rack mount with 1 to 4 channelswith brackets for building into any 19“ measuring rack or for using on the deskDirect input 100 mV to 10 VMeasuring Input 12 V to 2000 Vsuitable for i.v. tests and calibrations in the test field and on-site

Working Desk with 19”TFT-Display, Key-board, Mouse, LaserPrinter and a separateMeasuring Rack withTR-AS RC Systemwith 1 to 4 channelsDirect input 100 mV to10 VMeasuring Input 12 Vto 2000 VInput Connection UnitFor easy connection ofmeasuring cables and

Terminating ResisstorsIndustrial PC Control Computer connected to the TR-AS digital recorder viaglassfibre LANfor use in test fields with suitable shielding







3 DR. STRAUSS SYSTEM-ELEKTRONIK GMBHD-96163 Gundelsheim/Bamberg

Phone +49 951-43063Fax +49 951-43858

INFO www.strauss.deemail dr.strauss@ strauss.de

TRAS F1-E 10/09/2008

DR. STRAUSS


www.strauss.de

The Frequency Response Analysis (FRA) on powertransformers is used for diagnosis at

works, after putting into operation andfor maintenance on site. The frequen-cy-dependent admittance is determi-ned and recorded as fingerprint.The test object is connected as a 2-pole to the connection unit with inbuiltstep voltage impulse generator withup to 350 V peak voltage and suffi-cient energy without additional mea-suring lines and shunts.

The phase-synchronous averagingtechnique improves the signal to noiseratio of the recorded data significantcorresponding to 16 to 24 and moreBit. Because the instant of the step

voltage excitation is not correlated to external electromagnetic fields, e.g. caused by power transformers, switchgear or radio stations, their in-

fluence is reduced corresponding to the number of accumulations applied.

Digital Recorder with 200 MS/s sampling rate and 12 Bit resolution, remotecontroled by external Laptop ComputerThe VFT-Measuring System TR-AS RC for VFT is special designed for highbandwidth and allows measurements of very fast transients (VFT) in a fre-quency range from power frequency up to 100 MHz directly with help of capa-citive sensors, e.g. PD-sensors installed in Gas - Insulated Switchgear (GIS).Additionally measurement of lightning and switching impulse voltages as alsoA.C. measurements on the finally installed GIS can be performed.The VFT-Measuring System is remote controlled via the local area network(LAN) by an external Laptop Computer with special remote control software.

Impulse Calibration Systems KAL 1000 / RIG 1000KAL 1000 Reference Impulse CalibratorBasic device with electronically controlled char-ging unitSTEP-voltage 10 to 1000 VTIME-mark generator 20 msImpulse shapesLI 0.84/60 / LI 1.56/60 / SI 20/4000 / SI 250/2500available for pulse calibration

Chopping time selection of for all shapes from 0.5µs to some ms.Calibration acc. to IEC 61083 / IEEE 1122 is auto-matically performed with calibration software TRAS-KAL including generation of calibration certificatetogether with TRAS digital recorders.Light weight design:with approx. 10 kg easy to handle

RIG 1000 H Unit Step Voltage Generator

for determination of the impulse scale factor andthe response parameters of the impulse measu-ring system including h.v. divider according to IEC60060-2 / IEEE 4.

Application:

The generator is placed on the floor or wall in the h.v. test field and connected to the h.v. divider. Mea-surement and determination of response parame-ters is automatically performed with calibration soft-ware TRAS-TEIL together with TRAS digital recor-ders.

was accredited on 06.06.1994 by the Physi-kalisch-Technische Bundesanstalt (PTB)with DAR registration number DKD-K-11701.

DR. STRAUSS Ltd. is the first companywhich may calibrate impulse measuring andcalibration systems for h.v. impulse testswith traceability to National Standards and

may issue calibration certificates, which reali-ze the physical units of measurement accor-ding to the International System of Units (SI).

The laboratory is equipped with Reference

Standards of measurement TR-AS 200-12,TR-AS 200-14 and KAL 1000 which come from our own production.

DKD Calibration Laboratory for Impulse Measurement

High Resolution Frequency Response Analyses System (FRA)For measurement ofShort-Circuit Admittance Function

Open-Circuit Voltage Transfer Functiond.c. and 50/60 Hz impedance

calibration test:1 mS / 1 kOhm

no load test:1 MOhm || 30 pF

short circuit test:33 S / 30 mOhm

1175 MVA Short CircuitTransformerwinding 3.1-GND

Very Fast Transient Measurement System for GIS

Measurement and CalibrationProduct Overview






4DR. STRAUSS SYSTEM-ELEKTRONIK GMBHD-96163 Gundelsheim/Bamberg

Phone +49 951-43063Fax +49 951-43858

INFO www.strauss.deemail dr.strauss @ strauss.de

TRAS F1-E 10/09/2008

DR. STRAUSS


www.strauss.de

ISO-VER 127 kv a.c. isolation

1 to 8 channelsinput 0.1 to 10 V1 MOhm / 30 pFprogrammableoutput ±2 Vbandwidth 2.5 MHzaccuracy 1%

Protective Relay TestSystembased on TR-AS 10-12 andISO-VER2.2 with 3 to 8 ana-logue inputs for voltage andcurrent and 12 to 32 digital

inputs for measuring contactevents.

EVT-VC capacitivepreamplifier for GIS up to

800 kV, sec 6.5/ Ö3 VoltEVT power amplifier formeasurement and protection

6.5:100/ Ö3 VoltAdaptation Amplifier

Application as adaptionamplifier for calibration of e-lectronic (5 or 6.5 Volt) vol-

tage transformers with conventional ratio bridges with 100/ Ö3 Volt rated voltage. Classes 0.1 and less available.

Electronic Voltage Transformer EVT

Tapchanger TestSystembased on TR-AS 10-12 with8 analogue inputs for mea-suring voltage, current andtorque and 32 digital inputsfor contact events.Software for automatic routi-ne test with verification oftest results with given para-meters.

Multichannel Transient Recorder Systems

TR-AS 10-12 / 100-10/12

Impulse current 8/20 μs1 - 2,5 - 10 - 20 kA0,5 - 0,2 - 0,05 - 0,02 Ω 50 - 280 - 5000 - 18000 A²s

< 30 ns risetimeflat response, no initial peakTemp-koeff < 10-4

Impulse Current Measuring Shunt ICMS

using RIG 1000 Hh.v.probes can be calibratedwithup to 1000 V STEP voltage

Probe Calibration System RIG 1000H

on h.v. impulse voltage divi-ders determining ratio andresponse parameters acc. toIEC 60-2 / IEEE 4

STEP Response Measurement RIG 1000H

On-Site SwitchgearTest SystemMultichannel-System based onTR-AS 10-12 with 3 analogueand 24 digital inputs formeasurement of make andbreak times.The picture shows revision ofelder 110 kV compressed air

switchgear. The measuring system is placed inside a transportationcar and connected to the interrupter under test which must beswitched free from h.v. during the measurement. The triggering ofthe system follows automatically with help of the releasing coilcurrent, measuring data will be evaluated by hand or automaticallyand then stored on to harddisk to generate a test record.

for applications in the high power test field together with

TR-AS multichannel transient recorders

Isolation Amplifier Systems

ISO-VER 2.22 or 4 kv a.c.isolation1 to 8 channelsinput 1 to 1000 V1 MOhm / 30 pFoutput ±1 Vbandwidth 0,1 / 2 MHzaccuracy 1%

A floating current input from mA to kA canbe realized using a suitable measuringshunt at the input.

Measurement and CalibrationProduct Overview

Technical data and design subject to change without notice. Alternative design on request.

Impulse Voltage Generator HIG 7000

Impulse Voltage 7 kVShape 0,1/2000 µsfor non-destructive testing ofelectronic unitslow energy 1,2 Ws only

optional shape 1,2/50 µs



Documents

1 Product Overview