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RM 430

RM 430
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RM 430 Transformation Ratio Meter The ratio meter type 430 is used for the measurement and check of the transformation ratio of voltage dividers and terminal networks. The instrument measures the real transformation ratio taking into consideration the influence of the surroundings and including the effect of the measuring cable (which is important especially in the case of damped capacitive voltage dividers). The connection to the high voltage electrode of the voltage divider and the instrument can be done with a wire of 1 mm diameter. For the low voltage arm the impulse voltage measuring cable shall be preferably used. The transformation ratio meter has been developed especially for checking-up the transformation ratio of high voltage dividers in the test field. ADVANTAGES & BENEFITS Easy usage Real Ratio measured Special designed for HV dividers Small, portable unit Battery powered APPLICATIONS The instrument is available as a small portable unit placed in a synthetic housing. The unit is powered from a built-in battery thus enabling measurements at appropriate places on the test platform. One banana plug or one BNC output respectively is used for the connection to the voltage divider; one LEMO plug and one BNC plug for the low voltage connection. By pressing a push-button a sine wave of 1000 Hz is applied and the value of the transformation ratio of the voltage divider is displayed digitally. The ratio read-out remains during approx. 1 min. on the screen then vanishes automatically. The selection of the measuring range occurs automatically thus eliminating calculations for the determination of the transformation ratio which are time consuming and subject to errors. TECHNICAL SPECIFICATIONS Measuring Range Calibration Voltage Overflow indicator Built-in battery with charger Battery check a brand of Haefely is a subsidiary of Hubbell Incorporated. Haefely has a policy of continuous product improvement. Therefore we reserve the right to change design and specification without notice.

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To measure a voltage divider the ratio meter RM430 is connected as shown above SCOPE OF SUPPLY Ratio Meter type 430 Charger Manual www.haefely.com Europe, Asia, South & Central America, Australia Haefely Test AG Birsstrasse 300 4052 Basel Switzerland + 41 61 373 4111 + 41 61 373 4912 sales@haefely.com China (Sales & Service Office) Haefely Test AG – Beijing Office 8-1-602, Fortune Street No. 67, Chaoyang Road, Chaoyang District Beijing, 100025 P. R. China + 86 10 8578 8099 + 86 10 8578 9908 sales@haefely.com.cn North America Hipotronics Inc. 1650 Route 22 PO Box 414 Brewster, NY 10509 USA +...

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RM 430 2Pages

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RM 430
2Pages