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3695
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Programmable Electronic Voltage Burden ■ HAEFELY HIPOTRONICS has designed a programmable electronic voltage burden for efficient testing of instrument transformers. In conjunction with the type 2767 automatic instrument transformer test set and the type 4860 electronic voltage divider, the system makes it possible to integrate burdens into a computer-controlled testing system. The electronic voltage burden replaces traditional burdens with passive resistances and inductances. The wide range of programmable impedances makes it possible to emulate most existing national and international standard burdens as well as customer- specific values. 0 The universal voltage burden is suitable for standard voltage ratings. Power levels are selectable over a wide range (up to 75 VA) with cos (3 = 0.1 to 1 at 50 0 Cost-effectiveness: many classical passive burdens can be replaced by a single electronic voltage burden. 0 The power range can be extended to 400 VA with an additional passive voltage burden. 0 Burden values can be retrieved from stored tables 0 Nine individual burden settings (SN, cos (3) can be stored and retrieved as needed. 0 High accuracy of 1% - even with additional passive burden connected. 0 The internal resistance of the measuring system can be parameterised from the keyboard and is automatically compensated. The unit can thus be used with a variety of instrument transformer test sets, such as Tettex types 2711/22, 2765 and 2767 or other 0 Prompting for interactive input of parameters makes operation simple. 0 The unit can be fully integrated into an automatic measurement system via the RS - 232 or optional IEEE 488 GPIB interface. The programmable electronic voltage burden 3695 is ■ Manufacturer of Voltage Instrument Transformers ■ National Standards Laboratories ■ On-Site Testing of High Voltage Instrument HIGH VOLTAGE TEST SOLUTIONS

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TECHNICAL SPECIFICATIONS Rated power SN In increments of Power factor cos β In increments of Rated voltages UN All values with factors of Voltag range Maximum burden current Test voltage frequency Error thresholds: under reference conditions: Test voltage frequency Resistance ∆ R / IZI Reactance ∆ X / IZI - under rated service conditions: Resistance ∆ R / IZI Reactance ∆ X / IZI Cited error thresholds also apply when additional burden is connected. Reference and rated service conditions according to IEC 359 and operating instructions. Line power 230 or 115 V, 50 or 60 Hz Power consumption...

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COMPLETE PORTFOLIO FOR INSTRUMENT TRANSFORMER TESTING 2767 Automatic Instrument Transformer Test Set Highly accurate test set for accuracy measurements of voltage and current instrument transformers according IEC60044, ANSI C57.13 and others. 3691 Electronic Current Burden ProgrammableMelectronic current burden according IEC, ANSI or user defined values. Up to a rated power of 75 VA with 1% accuracy. Can be extended to 200 VA with external burden Tettex 3692. 3697 Additional Voltage Burden Remotely controlled additional voltage burden Range expansion to max. 400 VA 1% accuracy over the full...

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3695 3Pages

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3695
3Pages