PHASE SEQUENCE INDICATORS K-3, K-6, K-7
ROTARY TYPE • NO LAMPS • RELIABLE • RUGGED • VERSATILE • TIME SAVING
POSITIVE, STRAIGHTFORWARD SEQUENCE INDICATION IS PROVIDED over a wide variety of voltage and frequency by direction of rotor rotation. No need for range switching or terminal changing. Also indicates an open phase.
MODELS K-3: 60-600 volts, 25-60 Hz MODEL K-6: 24-480 volts, 400 Hz MODEL K-7: 60-600 volts, 25-60 Hz
K-7 has several options with different lead lengths and colors. See back of brochure for application on other frequencies. Use of the Knopp Phase Sequence Indicator saves man-hours and protects valuable equipment against damage. It pays for itself in a short time.
of the switch, the Indicator clips can be left connected to the circuit-under-test between "before" and "after" readings of the phase sequence - timesaving and error preventing. Between these tests the instrument can be left hanging from the clips. There are no exposed metal parts. The instrument housing is made of laminated phenolic, and is cylindrically shaped, an exceptionally rugged service-proven construction. The three window panes are small and deeply recessed for protection from impacts. Good visibility of the rotor movement is assured. The black area o the aluminum rotor blacks out windows in phase sequence. Only 21 oz. in weight, the indicator is small and easily carried.
Indicator is to indicate the order of succession in time of the different voltage peaks of a multiphase supply. In addition, the Knopp Sequence Indicator enables one to make continuity tests. It is a valuable instrument in diverse fields involving polyphaser power apparatus, being employed by line and installation crews for public utility systems and industrial-plant electrical departments. It is, furthermore, helpful in the testing departments of public utility systems for laboratory and field testing. The Knopp Phase Sequence Indicator is used in connection with the making of three-phase circuit installations or alterations, and replacement installations of motors and generators, also for making continuity tests of circuits of polyphase systems. Moreover, it is valuable in making connections of power- factor meters, volt-ampere meters, watt and watthour meters, and relays. Some ofthese applications are discussed in the following paragraphs. (continued)
specifications The following salient features are reasons for this instrument's proven reliability and long life, for its convenience, simplicity, and safety in use and for its durability in rigorous service. 1. Specially designed induction motor unmistakably indicates the phase sequence by direction of rotation of rotor disc. 2. The Lead Set is permanently connected to the instrument to save testing time and prevents errors in connecting. 3. For ease and certainty in identifying connections, the test clips are permanently marked with letters A, B, and C, and the corresponding flexible leads and clip insulators are coded red, white, and blue.
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4. The patented circuit and switch applications protection and personnel safety. Because The primary function of the Phase Sequence arrangement makes for instrument
Knopp, Inc., a TESCO Company
925 Canal Street, Bristol, PA 19007 I 215-228-0500 I www.knoppinc.com
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