Cut Sheet
Table Of Contents
- General Product Information
- Installation/System Requirements
- Operation
- Standards & Ratings
- Functional Safety
- Indicator – Battery
- Indicator Module
- Isolation Module
- Sensor Leads
- AVT System Cables
- Access Control Kit
- Questions and Answers
- General Product Information
- GP01 Will voltage be present on the door when VeriSafe is installed?
- GP02 Does the VeriSafe AVT have internal short circuit protection?
- GP03 How should the VeriSafe AVT be disposed of at end of life?
- GP04 Does the VeriSafe AVT device have digital integrated circuitry?
- GP05 What is the absence of voltage threshold?
- GP06 Does the AVT detect ground faults?
- GP07 Does VeriSafe detect “stray” or inductive voltage in the 0-50V range?
- GP08 Is the device protected from static electricity?
- GP09 Is the VeriSafe Absence of Voltage Tester protected from power surges?
- GP10 What is the expected product life of the VeriSafe AVT?
- GP11 Can VeriSafe be used in an outdoor environment application?
- GP12 What is the voltage detection range of the VeriSafe AVT?
- GP13 Does the VeriSafe AVT have preventative maintenance (PM)?
- Installation/System Requirements
- IS01 Is overcurrent protection required for the VeriSafe Absence of Voltage Tester?
- IS02 Will installation of VeriSafe Absence of Voltage Tester affect the short circuit current rating (SCCR) of my equipment?
- IS03 Is the VeriSafe AVT a power circuit?
- IS04 Can the VeriSafe Absence of Voltage Tester be installed on a single-phase system?
- IS05 Can the VeriSafe Absence of Voltage Tester be installed on a DC system?
- IS06 Will the VeriSafe AVT detect improper installation?
- IS07 Can the AVT be installed to monitor the output of a Variable Frequency Drive (VFD)?
- IS08 Can VeriSafe be retrofit into existing equipment? Will this void the UL listing?
- IS09 Should the VeriSafe AVT device be installed on the Line side or Load side of the equipment disconnect?
- IS10 Is it acceptable to use a single VeriSafe AVT device on a main panel to provide absence of voltage protection for downstream panels?
- IS11 Does VeriSafe operate differently on solidly grounded and high resistance grounded systems?
- IS12 How does the VeriSafe AVT satisfy the NEC tap rule?
- IS13 What is the withstand and impedance rating of the AVT?
- IS14 Can the VeriSafe AVT be used on 4-pole systems?
- IS15 Can VeriSafe be installed in systems utilizing parallel runs?
- IS16 Can VeriSafe be installed in ungrounded systems?
- Operation
- OP01 Does the VeriSafe Absence of Voltage Tester verify it is operating satisfactorily before and after verifying the absence of voltage?
- OP02 Why does the yellow Caution Indicator flash at the end of a failed test procedure?
- OP03 Is PPE required to initiate an absence of voltage test with the VeriSafe Absence of Voltage Tester?
- OP04 Is PPE required to open an enclosure if the VeriSafe Absence of Voltage Tester confirms the absence of voltage (green light)?
- OP05 How does the VeriSafe Absence of Voltage Tester verify that sensor leads are in contact with phase conductors and ground?
- OP06 Will VeriSafe indicate the difference between residual voltage and nominal voltage?
- OP07 How would an operator know if nominal voltage is detected?
- OP08 Are users protected from hazardous voltage when using the AVT?
- OP09 Does the VeriSafe AVT device search for stored energy in VFDs, capacitors, or UPS devices?
- OP10 How do you know that the test circuit is working?
- OP11 Does VFD or MCC noise affect the device?
- OP12 Can VeriSafe be used to ensure that energy stored in the capacitors in a variable frequency drive (VFD) has dissipated?
- OP13 What is the “known voltage source” used to verify that the VeriSafe Absence of Voltage Tester is operating satisfactorily?
- OP14 What happens if VeriSafe is exposed to temperatures beyond its max rating of 60 C? Will VeriSafe stop working? How will it react?
- Standards & Ratings
- SR01 Does the VeriSafe AVT meet the requirements for permanently mounted absence of voltage testers described in NFPA 70E?
- SR02 What are the EMC ratings and test levels for VeriSafe?
- SR03 What is the operating temperature range of the VeriSafe AVT device?
- SR04 Do the door mounted Indicator module and DIN mounted Isolation module have different operating temperature ranges?
- SR05 What is the withstand rating of the AVT?
- SR06 What is the impedance rating of the AVT?
- SR07 Does VeriSafe meet the requirements for OSHA 1910.147 LOTO?
- SR08 What is the Performance Level (PL) rating of VeriSafe?
- SR09 Does VeriSafe have an officially published SCCR?
- SR10 Should the VeriSafe AVT be de-rated at higher altitudes?
- Functional Safety
- Indicator – Battery
- IB01 How long will the battery last?
- IB02 Where can a replacement battery for the indicator module be obtained?
- IB03 Do I have to de-energize my equipment to replace the battery?
- IB04 If the threshold is 3.0V, why do I have to verify that my de-energized line voltage is below 1.5V before installing?
- IB05 How many grams of Lithium does the VeriSafe AVT Indicator battery contain?
- Indicator Module
- Isolation Module
- IM01 What are the purpose of the output contacts on the Isolation Module?
- IM02 What is the rating of the Isolation Module output contacts?
- IM03 Is the Isolation Module serviceable?
- IM04 Is the Isolation Module conformal coated?
- IM05 At what voltage do the phase indicator lights turn off?
- IM06 What is the heat dissipation for the vertical and horizontal mounting of the isolation module?
- Sensor Leads
- SL01 Why are there two sensor leads per phase/ground?
- SL02 Why is it necessary to physically separate the two sensor leads during installation?
- SL03 Can the AVT Sensor Leads be extended?
- SL04 Can the AVT Sensor Leads be shortened?
- SL05 Is there a minimum or maximum distance required between installed sensor leads?
- SL06 Can one set of sensor leads be terminated on the line side of phase conductors and the other set of sensor leads be terminated on the load side?
- SL07 How should the VeriSafe Sensor leads be connected to a busbar?
- SL08 What methods can I use to terminate the sensor leads connected to power conductors in my equipment?
- SL09 Are ferrules required when installing sensor leads?
- AVT System Cable
- Access Control Kit
- AC01 What types of equipment can the VeriSafe™ Access Control Kit be installed in?
- AC02 How is the electronic latch powered?
- AC03 How much force can the electronic latch sustain?
- AC04 What is the lifespan of the VS-ACK-BATTERY?
- AC05 Is the VS-ACK-BATTERY replaceable?
- AC06 How do I access my panel if I lose power, or my electronic latch malfunctions?
- AC07 Can the wire harness included with the VeriSafe Access Control Kit be extended?
- AC08 Do I need a different mechanical override key for each VeriSafe™ access control kit?
- General Product Information
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OP07 How would an operator know if nominal voltage is detected?
If the nominal voltage is detected, the Voltage Presence indicator(s) will be illuminated. These red LED's
are for reference only. Lack of illuminated of the red LED's does not guarantee the absence of voltage.
Top of the Document
OP08 Are users protected from hazardous voltage when using the AVT?
VeriSafe is designed with several layers of protection with regards to electrical isolation. The isolation
module uses limited impedance techniques to limit current from the power conductors to 0.5mA or
less. Additionally, galvanic isolation techniques are used between the isolation and indicator
modules. Further, the isolation module interface is designed with an insulated plastic housing and
potted faceplate to keep voltage away from the user interface. Top of the Document
OP09 Does the VeriSafe AVT device search for stored energy in VFDs, capacitors, or UPS devices?
When the test is initiated, it will not pass if voltage over 3.0V AC RMS (50/60 HZ) or 3.0V DC is detected
on the line monitored by the AVT device. Top of the Document
OP10 How do you know that the test circuit is working?
If any part of the test circuit fails, the green absence of voltage indicator will not illuminate. The test
circuit is part of the safety function and must meet SIL 3 functional safety requirements. Functional
safety ensures that dangerous failures are detected and controlled in a safe manner. In addition, there
are multiple provisions in the UL 1436 listing requirements as well as the requirements to address the
reliability of the test circuit. Top of the Document
OP11 Does VFD or MCC noise affect the device?
VeriSafe is designed to work in an industrial environment, in proximity to VFDs and MCCs, among other
equipment. It is designed to meet IEC/EN 61326-1:2013 (EMC Immunity for measurement, control and
laboratory use – EMC requirements, Part 1: General Requirements) and IEC/EN 61326-3-1:2008 (EMC
Immunity requirements for safety related systems and for equipment intended to perform safety-
related functions (Functional safety) – general industrial applications). Top of the Document
OP12 Can VeriSafe be used to ensure that energy stored in the capacitors in a variable frequency
drive (VFD) has dissipated?
The VeriSafe AVT is designed for operation in 50/60Hz systems up to 600V. Although it has been
certified to withstand expected EMI and transients that may occur in an industrial environment, there is
a potential for the device to overheat and to be damaged if exposed to high levels of emissions.
Care must be taken when installing the VeriSafe into a VFD system or any other system that includes
components capable of modifying the frequency or producing electromagnetic energy beyond the levels
defined by the IEC 61326-3-1:2008 standard. The VeriSafe should always be installed per the installation
guide, connected directly to the incoming phase power and not after any type of equipment or device
whose purpose is to provide filtering for a VFD.
If there are any EMC filters installed in the system external to the VFD the VeriSafe should be connected
to the line before the filtering. The VeriSafe should not be installed between the filter and the drive, it
should also not be connected between the drive and the motor being driven. Top of the Document