MLS 7100
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MLS 7100 transformer loss measuring bridge The MLS 7100 transformer loss measuring bridge was especially designed to greatly simplify the determination of transformer core and copper losses – an ideal choice when working on site. The measuring bridge features open circuit as well as short circuit measuring. Many transformers can be directly connected to the MLS 7100 without needing further transducers. Core losses are an important transformer quantity when talking about electrical efficiency, operating expenses and the overall transformer value. Core losses mainly emerge from steel losses (eddy currents and hysteresis losses) and also from the core losses. Steel losses are typically determined using open circuit measurement, as a relatively small magnetizing current is flowing. Using this technique, the copper losses are minimized due to the square correlation of power and current. Copper losses are determined using short circuit measurement, as the magnetizing modulation of the steel core should be minimized. In addition the short circuit voltage is determined this way, which is also an important quantity. In practice, the test voltage is inputted at the h.v. side (l. v. side shortened), as at least many mid power transformers reach their nominal current in between the voltages that are easily available in industrial power networks (e. g. 3 x 400 V 4 % of 10 kV). Transformer measuring devices transformer loss measuring bridge Features • Open circuit measurements • Short circuit measurements • free selectable voltage and current dividers • max. 1000 kV with transducer • max. 1000 kA with transducer • 550 V (chained) 6 A directly connectable • Measures and displays: - voltages - currents - power - short circuit values - frequency • Centronics printer port During open circuit measurements, the steel core has to be fully • RS232C port for external control modulated to reach the nominal transformer voltage. Using the h. v. Questions? side, the voltage would be quite too high, so the test voltage is typically inputted at the l. v. side (e. g. 3 x 400 V) and the results are recalculated phone: +49 (0)3328 / 3179 - 0 fax: +49 (0)3328 / 3179 - 10 accordingly. email: sales@schuetz-messtechnik.com Here you will get technical assistance as well as complete information regarding features, prices, shipment and reselling. Made in Germany SCHUETZ MESSTECHNIK GMBH, Rheinstrasse 7a, D-14513 Teltow 4. Edition August 2012. Changes are subject to chang

Transformer loss measuring Transformer loses Frequency Test voltages Open circuit current 100 - 2500 VA 40 - 70 Hz 1000 kV AC max. with transducer 100 - 500 V AC directly connectable 1000 kA max. with transducer 1 - 5 A directly connectable Transformer measuring devices transformer loss measuring bridge Available accessories Short circuit measuring Short circuit losses Frequency Short circuit voltage Measuring current • Cable various length, with Kelvin lugs or Kelvin clamps • Certificate 100 - 2500 VA 40 - 70 Hz 1000 kV AC max. with transducer 100 - 500 V AC directly connectable 1000 kA...