TSS
20Pages

Catalog excerpts

HIGH VOLTAGE TEST -insulated HV Test-Transformer Systems Type TSS for factory testing Type TSSV for on-site testing 600 kV, 250 kVA test system with coupling capacitor & SFe-air bushing

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$SSOLFDWLRQ SF6 insulated test transformers are especially designed for testing metal-clad switchgear (GIS) in the factory and on-site, and for testing on-site substation equipment. The conventional transformers can be flanged directly to the GIS. This makes testing of such GIS installations possible without feeding them through an air-SF6 bushing. Therefore, the merits of the encapsulation remains effective also during the testing which is of importance for Partial Discharge tests. These systems are particularly suited for on-site tests of GIS after assembly. In the factory, they allow to...

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%ORFNGLDJUDP IRU WHVWLQJ WHVW REMHFWV RQVLWH V\VWHP 7669 T £Tqpta ` VT xc%w'G2Xt£'d ` ` a` Q S v u G s a e r a` T d T T a` h f e ` Pp5cqV`55pi(ga5'd Rbca 5Y XV5S RP§G ` W U T Q I H SF6 - air bushing Encapsulated components Power line filter Coupling capacitor Standard capacitor Partial discharge detector Test object Capacitance and tan delta bridge Insulating transformer Control unit Control cables Power connections Tests with bushing Tests with flanged test object Measuring cables 6\VWHP FRPSRQHQWV The test system includes following main components: • • • • • • • Regulating transformer...

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6\VWHP FRPSRQHQWV RI 766 WHVW V\VWHPV IDFWRU\ WHVWLQJ qV3EqVqVVp %# l k t m g d s V 55 m p r q l p ctDVpqqc Et£m E3 PV5 o 6\VWHP FRPSRQHQWV RI 7669 WHVW V\VWHPV RQVLWH WHVWLQJ qVq5%Vp %d#Vfd# l k j i h g e n V 55 m ctDVpqqc EPq3 )XQFWLRQ RI WKH WHVW V\VWHP The encapsulated test transformer TES is a conventional transformer and steps-up the voltage coming from the regulating transformer. The controls act on the regulating transformer to adjust precisely the input voltage of the TES and thus the test voltage. A compensating reactor KDL is connected between the regulating and the test...

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'HVFULSWLRQ RI WKH WHVW V\VWHP FRPSRQHQWV 5HJXODWLQJ WUDQVIRUPHU W\SH 67/ 'HVFULSWLRQ With this air-insulated column-type regulating transformer, the input voltage of the test transformer can be varied smoothly & continuously. The unit is for indoor operation. The active part is air insulated and built into a cubicle. The primary winding is galvanically separated from the secondary winding. The driving motor allows a slow and a fast regulating speed (40-240 s from 0-100 % of the voltage). The zero start interlock forces the operator to start always from zero. The primary breaker and...

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&RPSHQVDWLQJ UHDFWRU W\SH .'/ 'HVFULSWLRQ For the compensation of the reactive power of capacitive test objects. The air-insulated compensating reactor is connected between the regulating transformer and the test transformer. Therefore, the power rating of the regulating transformer and of a possibly preconnected power filter can be kept small. The compensating reactor comprises 3 inductances which can be combined to achieve up to 7 different power combinations. The reconnection is basically done manually. Upon request (option), a remote re-connection with switches, actuated from the...

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7HVW WUDQVIRUPHU W\SH 7(6 'HVFULSWLRQ The test transformer is the heart of any SF6 insulated test system. It is housed in a special tank and is terminated on its HV side by a GIS spacer. All LV terminals are brought out insulated and housed in a connection box. The exciter winding is divided into 2 groups to allow better flexibility in function of the test voltage & load and enhances the compensating reactor efficiency. The spacer type (standard ABB) is chosen acc. to the transformer voltage. Special design are available upon request. A high voltage capacitor is incorporated in the TES...

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ZHLJKW RI WKH 7(6 WUDQVIRUPHU VHULHV t pPPc3D35m r qVp c p 3' PHDVXUHPHQWV The indicated PD level is inherent to the test system itself, without considering possible external radiated interference or interference from the power supply. The PD level will be checked during the system test in our works. The above specified PD level presumes that the test system will be equipped with adequate filtering (low voltage filter) and earthing (< 2 Ω). The mains must fulfil the following requirements (according to IEC): Disturbances of supply voltage, peaks phase to ground Harmonics of supply: Ratio of...

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&RQWUROV W\SH 27 'HVFULSWLRQ The Operating Terminal OT 247 provides a safe and easy computer-aided operation of transformer-type AC high voltage test systems. The unit is built into a standard 19" desktop housing. It has a high electromagnetic compatibility and does not need additional screening. Due to the built-in safety interlocks the operator can fully concentrate on the test object. As an option, the more sophisticated OT 257 can be offered. 6RIWZDUH The program allows the following operations: • • • • • • Switching On/Off of the primary circuit breaker Switching On/Off of the...

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&RQWUROV IRU RQVLWH WHVWV W\SH 7.07 'HVFULSWLRQ RI WKH FRQWUROV 7.07 The controls TKMT house the control panel with push buttons, the HV-meter DMI 551 and the regulating transformer. Upon request, the power cables can be fitted with Multicontact plugs. 'HVFULSWLRQ RI WKH FRQWUROV SDUW This push button controls allow the following functions and indications: • • • • • • • • • • Emergency stop Primary breaker On - Off Secondary contactor On - Off Horn Setting of voltage variation speed Max. current setting Key-switch Indication of test transformer temperature Indication of Primary current and...

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'LJLWDO PHDVXULQJ LQVWUXPHQW W\SH '0, 'HVFULSWLRQ ¥ ¤ ¡¢£ ¡©ª ¨ ¦§ Ä Á ¾ ½ ¼ Æ Ã ¿ Å Â À Used in conjunction with the TKMT controls for on-site tests, the DMI 551 is a multi purpose measuring instrument for all kind of voltages present in high voltage test laboratories. The instrument has a high EMC compatibility and does not need additional screening. It is built into a 19" standard housing, 3 units in height. 'LJLWDO PHDVXULQJ LQVWUXPHQW W\SH '0, The DMI 551 has 3 separate analogue measuring channels and is available in all combinations. E.g. as a pure impulse measuring device up to a...

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TSS
20Pages