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Measuring Bridge, Multifunctional
Measuring Bridge, Multifunctional
ZERA GmbH offers a multifunctional Measuring Bridge. The current/voltage measuring bridges WM3000U and WM3000I are high-precision comparator units for comparing secondary signal from transformer under test (or digital information of non-conventional transformers) with a reference signal supplied by a standard device. The resulting error value will be displayed as ratio error and phase displacement on the screen. In general the operation of the measuring bridges will be performed via integrated 8.9" touch screen. Optionally control and read-out of the measuring values can be performed via integrated interfaces and PC. PTs WM3000U: conventional voltage transformers (PT) according to IEC60044-2; electronic voltage transformers (EVT) according to IEC60044-7; and non-conventional, digital voltage trans-formers according to IEC61850-9-2. CTs WM3000I: conventional current transformers (CT) according to IEC60044-1; electronic current transformers (ECT) according to IEC60044-8; and non-conventional, digital current transformers according to IEC61850-9-2. Features: voltage inputs for PT and EVT with high impedance direct input (WM3000U); current inputs for CT and ECT with high impedance direct input (WM3000I); inputs for non-conventional, digital transformer (100base-Tx full duplex RJ45); user friendly operation via touch screen with integrated graphical user interface; A/D conversion of measuring value by 24 bit converter; and measurement of different currents and voltages via absolute control of all ranges PC interface via Ethernet.