Showing results: 31 - 45 of 46 items found.
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SG7001 -
Shanghai Jiuzhi Electric Co., Ltd.
On-site testing of turns ratio is an important basic measurement for power transformer diagnosis. It helps to detect faulty transformer windings as well as defective tap changer positions.
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QS Series -
Shanghai Jiuzhi Electric Co., Ltd.
QS30 is designed for highest precision determining the capacitance and dielectric dissipation factor tand of liquid and solid insulants, cables, capacitors, line transformers, generators, motors, bushings etc. Furthermore, it can also be used for power loss measurement on shunt reactors or similar apparatus.
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SGMF(T) Series -
Shanghai Jiuzhi Electric Co., Ltd.
Onsite mobile AC high voltage test systems are used for withstand voltage testing, partial discharge measurement, tan delta measurement to instrument transformers, GIS, GIL, switchgears and etc after they are installed onsite and for purposes of diagnostics in asset management up to 900kV/10A.
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SG5201 -
Shanghai Jiuzhi Electric Co., Ltd.
This instrument offers a complete set of functions to measure and detect effectively all parts of current in an insulation system. The instrument can supply an output power of 5W and a test voltage of up to 5000V and therefore measure insulation resistances up to 1TOhm. Additionally step-up voltage measurement, withstand voltage measurement, AC/DC voltage and frequency measurements up to 600V can be performed.
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TMS3000 -
Shanghai Jiuzhi Electric Co., Ltd.
The TMS3000 is a computer controlled high precision measuring system for power transformers. The system has distinguished itself in the rugged environment of the transformer test facility. The design ensures that its control and instrumentation function circuits remain unaffected by interference fields.
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RY2-1 -
Shanghai Jiuzhi Electric Co., Ltd.
This temperature control unit is used to regulate the desired temperature of the solid insulants test cell RY2The temperature range can be set up to 300°C
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YL Series -
Shanghai Jiuzhi Electric Co., Ltd.
The SF6 gas insulated standard capacitor is used together with a C and tan delta measuring bridge as the comparison standard leg of the bridge. It is used as Capacitance standard in measuring bridge Circuits to measure the dielectric dissipation Factor tand, Further-more, It can be used as high-voltage capacitor for voltage divider circuits of high-voltage transformer test.
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PTTS Series -
Shanghai Jiuzhi Electric Co., Ltd.
PTTS series power transformer test system is the complete test system for single and three phase power transformer and power reactor up to 765kV. The system will perform the following tests in accordance with ANSI / IEEE C57.12.90 and IEC 76 latest edition standards.
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Shanghai Jiuzhi Electric Co., Ltd.
Nearly every high voltage equipment prior to delivery to the customer will undergo a test related to capacitance and tan delta for a final quality control. Such tests are in general made at a frequency for which the equipment is designed. The reasons for the tests are firstly that too high losses ( means high tan delta) may cause a breakdown, secondly, the manufacturer of a specific equipment knows the typical magnitudes which can be tolerated and which provide information about the quality of newly manufactured equipment, and these measurements can also serve for a comparison with later preventive measurements.
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ACA-2000 -
Shanghai Jiuzhi Electric Co., Ltd.
This Industrial PC based control system is specifically designed for the needs of HV AC testing. The system is running a Windows based operating software package. Active and passive safety is implemented into the system as independent external emergency switches, software watchdogs, graphic symbols and status information for fast understanding. A protocol file can be used for a further calculation.
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YDTW\YDTCW series -
Shanghai Jiuzhi Electric Co., Ltd.
Conventional AC test transformers are especially designed for testing objects of medium capacitance. These systems are particularly suited for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (inductive voltage transformers). The possibility of stacking several of these transformer modules allows reaching very high voltage levels by keeping reasonable floor space.
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SG5002\SG5003\SG5008 \SG5009 -
Shanghai Jiuzhi Electric Co., Ltd.
The SG5002 \ SG5003 \ SG5008 \ SG5009 high current resistance meters are special designed for high performance measurement of high inductance, low value resistances such as transformer windings, motors, breakers, switchgear etc. Unlike normal resistance meters these instruments have a built-in high-speed discharge circuits for safe discharge of the stored energy in a measured inductance.
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Shanghai Jiuzhi Electric Co., Ltd.
SEPS Series Energy Storage High Power Test System are self-contained test sets for high power testing without large capacity power grid support. Just typically using no more than 200kW as a charging power, the high-power test system can independently conduct the short circuit testing for power and distribution transformer, dynamical thermal stability testing for current instrument transformer and cable, short circuit current withstanding test and short circuit breaking / making capacity testing for circuit breaker and etc.
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SG7501 -
Shanghai Jiuzhi Electric Co., Ltd.
SG7501 Oil Dissipation Factor and Resistivity Meter is used to measure dissipation factor, dielectric constant and resistivity for oil. The set is all-in-one structure, with internal oil cup, temperature control, AC bridge, high resistance meter, AC/DC test voltage and standard capacitor etc.
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YDST Series -
Shanghai Jiuzhi Electric Co., Ltd.
The YDST series assures voltage measurements accurately using a special design for high voltage divider, a series HV porcelain capacitor be installed in the test transformer, this is big helpfully for improving the accuracy of the voltage measurement compare to use the measuring winding.