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LED VOLTAGE DETECTOR
The Cat. No. 514440-2 LED voltage detector shown in Figure 2 uses a lamp
as the detecting device, with the lamp connected on one side to the contact
terminal and on the other side to an external conducting electrode. A small
gap is incorporated in series with the lamp. The extremely sensitive lamp is
illuminated by a very small current resulting from the capacitive effect
between the internal electrode and ground. This detector operates only on
grounded ac systems.
The detector has a strong molded thermoplastic housing and a built-in
TEST button. On recent models (identified by a green label sticker), the
TEST button applies a piezo voltage to check both the lamp and the
adjustment of the main spark gap. On earlier models (with a red label
sticker) this test only checks the neon lamp.
Figure 2: Dextex
®
LED Voltage Detector
Complete LED Type Detector
with Telescopic Pole
LED Type Detector Head