TYPE 4860WHEN QUALITY IS AN ISSUE, THE CHOICE IS TETTEX ELECTRONIC HIGH PRECISION S TA N D A R D V O LTA G E D I V I D E R S I N S T R U M E N T S It comprises a capacitive high voltage divider (compressed gas and air capacitors) and an electronic device. • Where voltage is less than 1000 V the electronic device can be used without the capacitive voltage divider. 2711/22 and 2711/23) and for test sets of many other makers. • Many instrument transformer types only require a single standard voltage divider. • Existing compressed gas capacitors can generally be equipped to form a complete system. 2765. • The electronic device of series 4860 can directly replace the earlier electronic device of series 4850 system. • Max. • A universal comparison standard for setting any transformer ratios within a wide voltage range. . • Simple use.TYPE 4860 ELECTRONIC HIGH PRECISION S TA N D A R D V O LTA G E D I V I D E R S 2 GENERAL A D VA N TA G E S The electronic high precision standard voltage divider is designed for use as a variable comparison standard instead of an inductive standard transformer for testing high-voltage instrument transformers. • Remote control possibility via IEEE 488 or RS 232C interface (optional). • The complete 4860 system voltage divider is certifiable. • A more cost-effective solution than inductive standard voltage transformers. • A suitable standard for voltage instrument transformer measurement with all Tettex transformer test sets (2767. measurement voltage only depends on compressed gas capacitor rated voltage.1 min) voltage divider ratio settings. • The standard can be combined with a type 2767 transformer test set to form an automatic voltage instrument transformer test system. especially for high rated voltage systems. • Very accurate (± 50 ppm ± 0. .. Capacitive voltage divider C1/C2 divides the primary voltage Uprim to voltage U1. T E C H N I C A L S P E C I F I C AT I O N Electronic system type 4861 (4862) General data Power supply 230/115 V. • Existing type 4850 electronic device replaced by type 4861: no additional errors.1.2 min Reference and rated operating conditions according to IEC 359. Electronic device The main components of this system are an input amplifier and a guard-potential control (up to 1010 V)...7 x 12. The complete standard voltage divider is therefore certifiable...1:10 4 1·10 -6 Additional errors • With extended operating range 5... measurement voltage = max. This standard divider is not certifiable. x1/√3.. • System calibrated and commissioned by TETTEX Instruments on customer’s premises: additional errors on enquiry. 250 V x1. guard capacitance 10 nF Weight 34 kg (74. class I.1.. constituting a variable electronic divider (see system diagram).. x1/3 Important! Max. which the user cannot change. Input 50/60 Hz • Max. 0.010.. output current for Usec ≤ 50 V conditions F = ± 50 ppm ± 0.1 min • With capacitive divider • C-divider calibrated and supplied by TETTEX Instruments as per standard system table: no additional errors...2 x 18.4 A • At reference 50 or 60 Hz ± 1% for U/UR = 100% • Max. power output Intrinsic error (electronic device) – In operating range 20. x1/3 Capacitive divider ratio CR – Input range – Resolution 1:1.. 0.S TA N D A R D V O LTA G E D I V I D E R ARRANGEMENT High voltage divider unit The high voltage divider unit comprises a capacitive high voltage divider (compressed gas standard capacitor C1 and air capacitor C2) and an electronic device in series. overvoltages and short-circuits.2 min • With extended frequency range 45.+70° C Dimensions frequency 45. load capacitance 10 nF System parameters Rated primary voltage PV • At rated operating conditions F = ± 100 ppm ± 0. permissible rated voltage of compressed gas capacitor. Type 4861 standard version This version has up to two fixed voltage divider ratios set by TETTEX Instruments.8 lb) (for guard potential control) Error limits Output • Max.65 Hz (W x H x D) 16 2/3 Hz on request 500 x 310 x 470 mm (19.1 pF temperature • Measurement signal – 20.. Type 4862 customized version The user can set two different ratios and change them whenever he likes.65 Hz 50 ppm.1 min • Max.010) x 1/CR [kV] adjustment factors x1. 3 .5% U/UR 100 ppm.010.1 min 1. x1/√3. The instrument is protected against setting errors.. output voltage Usec 250 V • Max. which the electronic device matches to the required secondary voltage Usec.5) • Max. Input ranges: – Direct input 0. an electronic divider and a power amplifier with the output stage..20% U/UR 50 ppm. input voltage U1 1010 V Power requirement approx. Message errors are indicated in the dot matrix.010 kV – With capacitive divider (0. 100 VA • Input resistance > 10 GΩ Storage and transport • Input capacitance < 0..200 % U/UR 5 VA – Test frequency 0. Rated secondary voltage SV Input range Adjustment factors 5 . 0. Voltage instrument transformers of less than 1 kV primary voltage can be connected directly to the electronic system via the adaptor box supplied with the divider.. 2 x 14.0 lb) 4 .10. The low-voltage connection is provided with a triaxial socket for use of the capacitor as a capacitive voltage divider (series 3370/.8 lb) 4000 pF ≈ 27 kg (59.U P series 3370 NK/… D C1 type 4861 electronic device ~ Uprim uN vN mains ground Legend for abbreviations used U/UR Capacitive divider ratio CR = 1 : C1 + C2 C1 = 1 : PV SV CR 200% Uprim U1 Excitation UR = Uprim PV = Usec SV Rated primary voltage Rated secondary voltage Capacitive divider ratio (C-Ratio) Primary voltage Secondary voltage Electronic divider input voltage Test voltage (primary or secondary) Rated voltage (primary or secondary) Excitation Uprim Usec U1 100% U } to instrument transformer test set U1 series 3330/… C2 Usec 0 0 50% 100% UR (PV. operating voltage (rms) – Capacitance values Triaxial/coaxial adapter no. SV) U UR U/UR Series 3370 compressed gas standard capacitors (C1) Series 3330 air capacitors (C2) Technical specification as in leaflets 3370 NK. 008140-72 enables C/tan δ measurements.000 pF 360 x 360 x 450 mm (14.2 x 17.B A S I C T E S T S E T..8 lb) 10000 pF ≈ 35 kg (77.D.. – Max.7 in) 2000 pF ≈ 24 kg (52. – Dimensions (L x W x H) – Weight 1000 V 1900..4 lb) 5000 pF ≈ 29 kg (63.. E L E C T R O N I C S TA N D A R D V O LTA G E D I V I D E R S E R I E S 4 8 0 0 S TA N D A R D S Y S T E M S Standard system Measurement range (Primary HV) Compressed gas standard capacitor C1 Air capacitor C2 C divider ratio CR Type [Series/pF/kV] Type [Serie/pF] CR = 1: (C1 + C2)/C1 3370NK/100/100 D 3330/9900 1:100 without without 1:1 2 … 200 kV 3370NK/100/200 D 3330/9900 3330/10000 + 1:200 1 … 100 kV 3370NK/100/200 D 3330/9900 1:100 without without 1:1 3 … 300 kV 3370NK/50/300 3330/4950 3330/10000 + 1:300 1 … 100 kV 3370/50/300 D 3330/4950 1:100 without without 1:1 3370NK/50/400 D 3330/9950 3330/10000 + 1:400 without without 1:1 3370NK/50/400 D 3330/9950 3370NK/50/400 D 3330/10000 + 1:400 3330/4950 1:100 without without 1:1 3370NK/50/600 D 3330/9950 3330/10000 (2x) + 1:600 without without 1:1 6 … 600 kV 3370NK/50/600 D 3330/9950 3330/10000 (2x) + 1:600 1 … 100 kV 3370NK/50/600 D 3330/4950 1:100 without without 1:1 3370NK/50/800 D 3330/9950 3330/10000 (3x) + 1:800 without without 1:1 8 … 800 kV 3370NK/50/800 D 3330/9950 3330/10000 (3x) + 1:800 1 … 100 kV 3370NK/50/800 D 3330/4950 1:100 without without 1:1 Type 4861/100 1 … 100 kV 10 … 1010 V 4861/200 10 … 1010 V 4861/300 10 … 1010 V 4861/400a 4 … 400 kV 10 … 1010 V 4861/400b 4 … 400 kV 100 kV 10 … 1010 V 4861/600a 6 … 600 kV 10 … 1010 V 4861/600b 10 … 1010 V 4861/800a 8 … 800 kV 10 … 1010 V 4861/800b 10 … 1010 V 5 . P. comprising: – IEEE 488 interface – Cable data-links for: -IEEE 488 interface. Important! Adaption and comissioning of the standard voltage divider by TETTEX Instruments is essential to ensure its required accuracy. 3m -RS 232C interface. 50/60 Hz *) The compressed gaz capacitor has to be ordered separatly. 0.O. 014107-00 – Measuring cable.Zurich Switzerland www.1.: +41.com Phone: +41.5 m no.com I N S T R U M E N T S . Determine and set the capacitive divider ratio.00 Haefely Test AG Tettex & Haefely EMC Division Bernstrasse 90. 30 m (fibre optic data-link) – Electronic device Type 4861 – Compressed gas standard capacitor series 3370* – Air capacitors series 3330 – Adaptor box for direct connection.5 m no. 016351-00 – Power cable – Triax/coax adapter no.O R D E R S P E C I F I C AT I O N Options Standard voltage divider as per standard system type series 4860. 013685-00 – Measuring cable. TYPE 4860 Standard supply E191. 1. 10 m no. 16 mm2. 10 m no. 014235-00 – Measuring cable.744 74 74 Fax. 4m -RS 232C interface. 230 or 115 V. no.90 Subject to change without notice 03.1.744 74 84 e-mail: sales@tettex. 008140-72 for compressed gas standard capacitor (for C/tan δ measurement) – RS 232C interface type 4861/2 Power voltage (please specify with order) type 4861/1 type 5993 type 5991 type 5992 Replacement of series 4850 electronic device by type 4861 The connections are compatible with the existing unit. 014108-00 – Ground cable.tettex. Box CH-8953 Dietikon .