Automation Canada - Cables & Connectors Issue - 36

EXPLORING PERMANENTLY MOUNTED
VOLTAGE TESTING PRODUCTS
THE MYTHS, THE DIFFERENCES, AND THE BENEFITS (CSA Z462 4.2.5)
There are a variety of different electrical safety products that are permanently mounted, each with different functionality and limitations. They all
have different purposes and should not be discussed interchangeably. Three common types of permanently mounted products are Voltage
Indicators, Test Portals, and Absence of Voltage Testers.
VOLTAGE INDICATORS - DETECT PRESENCE OF VOLTAGE
Voltage indicators are permanently mounted and use LED-style indicators that illuminate when presence of voltage is detected. They typically
illuminate at approximately 40V to 1000V, depending on the device and manufacturer. These devices are an excellent way to provide a visual
warning when voltage is present.
Voltage indicators should never be used to verify the absence of voltage. Equipment may be energized, even if the voltage indicator is not
illuminated. Lack of illumination can be caused by a failed LED, a bad installation, or a failed device. Installation codes often require voltage
indicators to be fused. If the fuse is open, the voltage indicator will not illuminate when voltage is present.
Additionally, voltage indicators bring line voltage (for example, 480V) directly to the door or external surface where the indicator is installed. This
could present a shock hazard, especially when troubleshooting with the door open as door mounted devices typically operate at control voltages
and workers may not be expecting the wires to the indicator to carry hazardous voltages. Wires that carry three-phase voltage across a hinge need
to be protected to ensure that repeated opening and closing of doors does not pinch or damage the wire or insulation.
Regardless of whether electrical or mechanical work will be performed, voltage indicators are not a test instrument and should not be used when
verifying the absence of voltage.

C A N A D I A N A U TO M AT I O N

VOLUME 3, ISSUE 2

36


https://www.panduit.com/

Automation Canada - Cables & Connectors Issue

Table of Contents for the Digital Edition of Automation Canada - Cables & Connectors Issue

Automation Canada - Cables & Connectors Issue - 1
Automation Canada - Cables & Connectors Issue - 2
Automation Canada - Cables & Connectors Issue - 3
Automation Canada - Cables & Connectors Issue - 4
Automation Canada - Cables & Connectors Issue - 5
Automation Canada - Cables & Connectors Issue - 6
Automation Canada - Cables & Connectors Issue - 7
Automation Canada - Cables & Connectors Issue - 8
Automation Canada - Cables & Connectors Issue - 9
Automation Canada - Cables & Connectors Issue - 10
Automation Canada - Cables & Connectors Issue - 11
Automation Canada - Cables & Connectors Issue - 12
Automation Canada - Cables & Connectors Issue - 13
Automation Canada - Cables & Connectors Issue - 14
Automation Canada - Cables & Connectors Issue - 15
Automation Canada - Cables & Connectors Issue - 16
Automation Canada - Cables & Connectors Issue - 17
Automation Canada - Cables & Connectors Issue - 18
Automation Canada - Cables & Connectors Issue - 19
Automation Canada - Cables & Connectors Issue - 20
Automation Canada - Cables & Connectors Issue - 21
Automation Canada - Cables & Connectors Issue - 22
Automation Canada - Cables & Connectors Issue - 23
Automation Canada - Cables & Connectors Issue - 24
Automation Canada - Cables & Connectors Issue - 25
Automation Canada - Cables & Connectors Issue - 26
Automation Canada - Cables & Connectors Issue - 27
Automation Canada - Cables & Connectors Issue - 28
Automation Canada - Cables & Connectors Issue - 29
Automation Canada - Cables & Connectors Issue - 30
Automation Canada - Cables & Connectors Issue - 31
Automation Canada - Cables & Connectors Issue - 32
Automation Canada - Cables & Connectors Issue - 33
Automation Canada - Cables & Connectors Issue - 34
Automation Canada - Cables & Connectors Issue - 35
Automation Canada - Cables & Connectors Issue - 36
Automation Canada - Cables & Connectors Issue - 37
Automation Canada - Cables & Connectors Issue - 38
Automation Canada - Cables & Connectors Issue - 39
Automation Canada - Cables & Connectors Issue - 40
Automation Canada - Cables & Connectors Issue - 41
Automation Canada - Cables & Connectors Issue - 42
https://www.nxtbook.com/kerrwil/AutomationCanada/automation-canada-machine-safety
https://www.nxtbook.com/kerrwil/AutomationCanada/auto-tuning-and-variable-frequency-drives
https://www.nxtbook.com/kerrwil/AutomationCanada/automation-canada-automation-in-2021
https://www.nxtbook.com/kerrwil/AutomationCanada/AutomationCanadaMachineSafetyMay2021
https://www.nxtbook.com/kerrwil/automationcanadaquarterly/AutomationCanadaV2I5
https://www.nxtbookmedia.com