Gossen Metrawatt M620A MetraPhase 1 Phase Sequence Indicator

M620A Includes Only:

• 1 phase sequence indicator
• 3 plug-on measurement cables with contact-protected plugs 600 V CAT IV 10 A
• 3 test probes for attachment to contact-protected plugs 1000 V CAT IV 1 A / 1000 V CAT II 32 A
• 1 alligator clip for attachment to contact-protected plugs 600 V CAT IV 19 A
• 4 batteries
• 1 operating instructions
• 1 carrying case

Features:

• Convenient Testing with Only 2 Cables (2-pole measurement): In addition to normal testing with 3 measurement cables, the phase sequence can also be tested with only 2 cables. After connection to L1 has been established, phases L2 and L3 are scanned separately, one after the other. This operating mode is indicated by means of intelligent software which rules out the possibility of erroneous measurements.
• Automatic Activation: The instrument is activated automatically as soon as a voltage of at least 100 V is applied to any 2 measurement sockets.
• Battery Saving Circuit: The instrument is shut down automatically when zero voltage is applied in order to extend battery service life.
• Displays phase sequence by means of 6 optically rotating LEDs with different colors (clockwise: green, counterclockwise: red)
• Displays Nominal line voltage with 3 LEDs
• Displays Nominal line frequency with 6 LEDs
• Phase search with 3 LEDs for L1, L2, and L3
• Indication of errors for:
  • Asymmetries
  • Missing phases

Applications:

• Phase sequence, line frequency, and phase voltage are tested and displayed simultaneously after the METRAPHASE 1 test instrument has been connected to the system under test at all phases with the included, contact-protected connector cables.
• The instrument is suited for initial testing, as well as for testing after repairs and modifications.

Phase sequence indicator in compliance with safety regulations. Many users prefer the Ferraris-type rotary dial which, however, requires a mechanical movement. The size of the movement necessitates the use of a relatively large housing in order to assure that the required clearances and creepage distances are adhered to. LEDs arranged in a circular array not only indicate the direction of rotation but rather line frequency as well by means of LEDs that light up in various colors. The presence of voltage at each phase is indicated with additional LEDs as required by the regulation, as well as Nominal line voltage. This phase sequence indicator can be used as a 3-pole or a 2-pole indicator.