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Download Ohmic Voltage Sensor GSER 16 - RITZ Instrument Transformers
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Ohmic Voltage Sensor GSER 16 including Isolating Amplifier EGIW 804 AV Medium Voltage Applications Direct, Alternating and Mixed Voltages Wide Frequency Range Electrical Isolation Ohmic Voltage Sensor GSER 16 including Isolating Amplifier EGIW 804 AV Features • Voltage Sensor and Isolating amplifier combined in one unit • High precision voltage divider • Frequency compensation • Digital data acquisition • Ultra low temperature drift with optional temperature compensation • High electromagnetic compatibility (EMC) Application Description The ohmic voltage sensor GSER 16 is designed for use in medium voltage installations. It is suitable for monitoring and measuring direct, alternating and mixed voltages for applications like frequency converter installations, motor management purposes and power quality analysis. The digital isolating amplifier EGIW 804AV is especially designed as an add-on product for the voltage sensor GSER 16 for applications which require an electrical isolation between the input and output signals. It also offers electrical isolation between the auxiliary power supply and the input and output signals. Voltage sensors are used instead of voltage instrument transformers if the primary voltage contains dc components and/or higher frequencies than 50/60 Hz. The combination of a voltage sensor and the digital isolating amplifier represents a high precision, wide frequency range, electromagnetic compliant and isolated system. The GSER 16 ohmic voltage sensor represents a measuring unit consisting of a high voltage resistive divider (R1, R2) and a preventive electromagnetic shielding (S), which provides high EMC and enables the GSER 16 to be used in environments with heavy external interferences and disturbances. The isolating amplifier EGIW 804 AV is designed for this kind of voltage sensors. It converts the sensor signal into digital data which is transmitted galvanically isolated to the output where it is reconverted into an analogue voltage. This analogue voltage is conditioned to an adequate level and is provided as output voltage which is corresponding to the primary input voltage. Data sheet General description Components GSER16 EGIW804 AV Functional principle Resistive divider, frequency compensated; isolating amplifier Cast resin insulated ins. class E (IEC 60085) Design Applications Measuring, frequency converter installations, motor management purposes and power quality analysis Standard IEC 60044-7 “Electronic Voltage Transformers“ (1999) Electrical data Input (1) Primary rated voltage Upr Frequency, rated fr Input resistance Input capacitance 15 kVrms 50/60 Hz 20 MΩ ± 5% < 10 pF 4) Output (1) Secondary rated voltage, Uout version EGIW804 1000 10 Vrms version EGIW804 0250 2.5 Vrms Rated burden Burden range Max. capacitive load Max. output current Rbr Cmax Accuracy 2) Linearity error @ fr ε Offset error @ Tr Interference voltage level Phase displacement at fr ∆φ Dynamic response Bandwidth: 0,2% fc (-3dB) Rated delay time 20 kΩ Rbr ... ∞ 2.2nF short-circuit protected ± 0.2% max. ± 2 mV max. 10 mVrms ± 10‘ max. 0 - 500 Hz 4) > 25 kHz 4) tdr = 19μs 4) Auxiliary power supply Nominal value Uaux,r Operational range Operating power 24 Vdc Uaux,r ± 20% < 2 VA Electrical isolation of EGIW 804 Input – Output 1min Input - Auxiliary power supply 1min 1s Output - Auxiliary power supply 1min 1s Insulation level for complete unit Max. cont. voltage Up, cont. Lightning impulse voltage withstand Power frequency withstand 150 kV, 1.2/50 μs 50 kV, 50 Hz, 1min Standards, tests EMC tests acc. to IEC 60044-7 (1999) cl. 6.7.1 and cl. 6.7.2 Climatic test - Damp heat test Temperature Humidity Duration IEC 68-2-3 40° C 93% 96 h Service conditions Environment Ambient temperature Output offset drift Indoor -10 ... 23 ... +65° C 0,1mV/K 4) 3) Mechanical data Insulator colour Weight, approx. Flashover distance Creepage distance Height, approx. Diameter, approx. light grey 22 kg 250 mm 530 mm 341 mm 220 mm min. min. 3000Vrms (60Hz) 1500Vrms (60Hz) 3000Vdc 1500Vrms (60Hz) 3000Vdc 18 kV max. Notes (1) representative data, may be modified according to customer requirements (2) The quoted error percentages refer to output range (3) optional temperature compensation available (on request) (4) typically Installation and connection instructions Mounting Vertical or horizontal with electronic box downward. Commissioning After all input, output and auxiliary supply lines have been connected, the device is ready for operational use without any setup or adjustment being necessary. Maintenance The Transducer does not require any maintenance. 1. Primary screw M10 of stainless steel 2. Ø 14 mm grounding point (internaly connected to electronic box) 3. Electronic box with integrated isolating amplifier EGIW 804 4. Cable gland Pg 9 5. Bottom plate of galvanized steel 6. Cast resin 7. Insert nut of stainless steel 8. Rating plate Input connections The input voltage (Up) has to be connected to the primary terminal (1). The earth connection has to be made via the bottom plate at the grounding point (2; internal connected to electronic box). Output connections Output voltage (Uout) has to be connected via screw terminals at terminal block Uout. Auxiliary power connections Auxiliary power supply voltage (Uaux) has to be connected to terminal block Uaux. Cable recommendation Double-shielded cable Each shielding must be connected to one side only. The outer shielding must be connected to the cable gland at the electronic box. For better EMC it is recommended to connect the inner shieldings to ground at the opposite side. RITZ Instrument Transformers GmbH – Core competency Under the trading name „RITZ Instrument Transformers GmbH” RITZ has been pooling its activities to gather new strengths since 01.08.2007. The tradition and knowledge of the parent company „RITZ Messwandler Hamburg“ and the subsidiary „RITZ Messwandler Dresden (TuR)“ has been united with the companies “Wandler- und Transformatoren-Werk Wirges (WTW) and “Messwandlerbau Bamberg (MWB)” under this name. This merger unites a total of more than two hundred years of know-how in instrument transformers production. In addition, RITZ has decided to concentrate on the core business of medium voltage and low voltage transformers in which the high voltage division is sold. The resources gained through this shall now be applied for additional innovations and quality standards in the medium and low voltage products. RITZ is therefore securing its position on the global market. The overseas corporations of RITZ Instrument Transformers GmbH in Austria (Marchtrenk), Hungary (Kecskemét), China (Shanghai) and USA (Hartwell) strengthen the company’s position on the international market. Instrument Transformers GmbH Siemensstraße 2 56422 Wirges GERMANY Tel +49 2602 679-0 Fax +49 2602 9436-00 Customised Cast Resin Parts Electronic Insrtument Transformers and Sensor WIRGES Cast Resin Power Transformers Wandsbeker Zollstraße 92-98 22041 Hamburg GERMANY Tel +49 40 51123-0 Fax +49 40 51123-333 Medium Voltage Fax +49 40 51123-111 Low Voltage Cast Resin Insulated Bus Bar Systems Instrument Transformers GmbH Medium Voltage Instrument Transformers HAMBURG Low Voltage Instrument Transformers Sales DRESDEN Instrument Transformers GmbH Bergener Ring 65–67 01458 Ottendorf-Okrilla GERMANY Tel +49 35205 62-0 Fax +49 35205 62-216 KIRCHAICH Instrument Transformers GmbH Mühlberg 1 97514 Oberaurach-Kirchaich GERMANY Tel +49 9549 89-0 Fax +49 9549 89-11 MARCHTRENK Instrument Transformers GmbH Linzer Straße 79 4614 Marchtrenk AUSTRIA Tel +43 7243 52285-0 Fax +43 7243 52285-38 KECSKEMÉT Instrument Transformers Kft. Technik-Park Heliport 6000 Kecskemét-Kadafalva HUNGARY Tel +36 76 5040-10 Fax +36 76 470311 SHANGHAI Instrument Transformers Shanghai Co. Ltd. 99 Huajia Road, Building 1-3, Huabin Industrial Park Songjiang Industrial Zone Shanghai, 201613 P.R. China Tel +86 21 67747698 Fax +86 21 67747678 HARTWELL Instrument Transformers Inc. 25 Hamburg Avenue Lavonia, GA 30553 USA Tel +1 706-356-7180 Fax +1 866-772-5245 [email protected] www.ritz-international.com OVS_en_-2013-01 | JSW