Medium voltage indicator increases worker safety

Grace Engineered Products introduces VoltageVision R-1VH / R1VL Medium Voltage Indicator.

Davenport, Iowa, September 27, 2010—Known for their products that increase employee productivity and promote compliance to NFPA 70E, Grace Engineered Products announces the release of its newest innovation—The Medium Voltage Indicator.

The VoltageVision R-1VH / R1VL Medium Voltage Indicator increases safety for workers performing mechanical or electrical maintenance on medium voltage equipment by helping to ensure isolation of electrical energy. These indicators flash with enough illumination to allow safe viewing from outside the enclosure through

Built for long-life and reliability with solid-state LEDs and flame-rated material, the Medium Voltage Indicators are available in packages of three (one per phase) in two voltage categories. Capacitive coupling between the Medium Voltage Indicators and earth ground provide a means of completing the flashing circuit without a hardwired ground connection, which provides enough energy to flash the LEDs. Capacitive coupling also provides high surge immunity and electrical installation integrity. The amount of energy transferred to the Medium Voltage Indicator through capacitive coupling varies, and therefore determines its flash rate and intensity. The key factors include the line voltage, the distance between the adjoining phases, and the size and distance of the ground plane (enclosure or other). Because of this, the Medium Voltage Indicators, with a flash rate optimized for applications on voltages between 2 kV and 15 kV, are sold under the part number R-1VL. The Medium Voltage Indicators, optimized for applications on voltages between 15 kV and 43 kV, are sold under the part number R-1VH.

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