Ohmic Voltage Sensor GSER 16

Transcription

1 Ohmic Voltage Sensor GSER 16 including Isolating Amplifier EGIW 804 AV Medium Voltage Applications Direct, Alternating and Mixed Voltages Wide Frequency Range Electrical Isolation

2 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 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. Description 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.

3 Data sheet General description Components Functional principle Design Applications Standard GSER16 EGIW804 AV Resistive divider, frequency compensated; isolating amplifier Cast resin insulated ins. class E (IEC 60085) Measuring, frequency converter installations, motor management purposes and power quality analysis IEC Electronic Voltage Transformers (1999) Auxiliary power supply Nominal value U aux,r 24 V dc Operational range U aux,r ± 20% Operating power < 2 VA Electrical isolation of EGIW 804 Input Output 1min 3000V rms (60Hz) Input - Auxiliary power supply 1min 1500V rms (60Hz) 1s 3000V dc Output - Auxiliary power supply 1min 1500V rms (60Hz) 1s 3000V dc Insulation level for complete unit Max. cont. voltage U p, cont. 18 kv max. Lightning impulse voltage withstand 150 kv, 1.2/50 μs Power frequency withstand 50 kv, 50 Hz, 1min Electrical data Input (1) Primary rated voltage U pr 15 kv rms Frequency, rated f r 50/60 Hz Input resistance 20 MΩ ± 5% Input capacitance < 10 pf 4) Output (1) Secondary rated voltage, U out version EGIW V rms version EGIW V rms Rated burden R br 20 kω Burden range R br... Max. capacitive load C max 2.2nF Max. output current short-circuit protected Accuracy 2) Linearity f r ε ± 0.2% max. Offset T r ± 2 mv max. Interference voltage level 10 mv rms Phase displacement at fr φ ± 10 max. Dynamic response Bandwidth: 0,2% Hz 4) f c (-3dB) > 25 khz 4) Rated delay time t dr = 19μs 4) Standards, tests EMC tests cl and acc. to IEC (1999) cl Climatic test - Damp heat test IEC Temperature 40 C Humidity 93% Duration 96 h Service conditions Environment Indoor Ambient temperature C Output offset drift 4) 3) 0,1mV/K Mechanical data Insulator colour light grey Weight, approx. 22 kg Flashover distance min. 250 mm Creepage distance min. 530 mm Height, approx. 341 mm Diameter, approx. 220 mm 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

4 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 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 (U out ) has to be connected via screw terminals at terminal block U out. Auxiliary power connections Auxiliary power supply voltage (U aux ) has to be connected to terminal block U aux. 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.

5 RITZ Core competency Under the trading name RITZ RITZ has been pooling its activities to gather new strengths since 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 in Austria (Marchtrenk), Hungary (Kecskemét), China (Shanghai) and USA (Hartwell) strengthen the company s position on the international market.

6 Sales HAMBURG Wandsbeker Zollstraße Hamburg Tel Fax Medium Voltage Fax Low Voltage WIRGES Siemensstraße Wirges Tel Fax Low Voltage Instrument Transformers Medium Voltage Instrument Transformers Cast Resin Insulated Bus Bar Systems Cast Resin Power Transformers Electronic Insrtument Transformers and Sensor Customised Cast Resin Parts DRESDEN Bergener Ring Ottendorf-Okrilla Tel Fax KIRCHAICH Mühlberg Oberaurach-Kirchaich Tel Fax MARCHTRENK Linzer Straße Marchtrenk AUSTRIA Tel Fax KECSKEMÉT Instrument Transformers Kft. Technik-Park Heliport 6000 Kecskemét-Kadafalva HUNGARY Tel Fax SHANGHAI Instrument Transformers Shanghai Co. Ltd. 99 Huajia Road, Building 1-3, Huabin Industrial Park Songjiang Industrial Zone Shanghai, P.R. China Tel Fax HARTWELL Instrument Transformers Inc. 25 Hamburg Avenue Lavonia, GA USA Tel Fax info@ritz-international.com OVS_en_ JSW