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Non-Contact, High Voltage Detector 275HVD
CHAPTER 2
PRODUCT FEATURES
2.1 Description
The Non-Contact High Voltage Detector Model 275HVD is a high voltage
detector by proximity. It is not designed to enter into contact with conduc-
tors.
The 275HVD should never touch conductors and must be used with an
insulated berglass rod or Hot Stick appropriately rated for the voltage
being tested.
The Non-Contact High Voltage Detector Model 275HVD is not a “measur-
ing instrument” per say, rather it is a product designed to warn the user of
the presence of voltage in a particular work site.
The 275HVD uses an internal sensor designed to detect the radiated elec-
trical eld (V/m) present in energized conductors. The radiated electrical
eld increases with the line voltage but decreases with distance and/or
shielding.
The 275HVD has eight voltage range settings. These correspond to inter-
nal eld sensitivity settings: the lower the voltage setting; the higher the
sensitivity to detect the electrical eld; and, the greater the detection dis-
tance. It also has an “auto-test” setting to check functionality (see § 4.3).
The 275HVD is battery powered and contains three standard 1.5V “C”
cells in the shaft below the sensing head.
When an electrical eld is detected, a sound annunciator (high-pitch, high
-powered buzzer) and visual indicators (bright LEDs) are triggered ON,
warning the user.
The body is made out of industrial grade UL rated polyamide (Type 66
Nylon). The shotgun adapter at the shaft end is designed to t into most
Hot Stick adaptors.
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