Tech Talk & Teach: Helpful Info and Tips from HVI

The TTT Section of the HVI Knowledge Center is designed to help our customers find the information and answers to their questions needed to best operate our high voltage products safely and efficiently. Here will be found many answers to commonly asked questions covering most product line areas, tech tips on special features or circuits unique to our products, engineering presentations discussing today’s technologies and methods for testing, slide presentations describing our products and their use for various testing applications, and many other helpful notes and files. 

This is for you, so please feel free to offer any suggestions you have for us to improve this service.

Tech Talk & Teach

Very Low Frequency 0.1 Hz Ac: VLF SERIES
VLF FAQ – Frequently Asked Questions
PDF
200 kV VLF Model: Design and Packaging
PDF
VLF Cable Test Voltages per IEEE400.2-2013
PDF
MV Cable Test Performed with VLF
PDF
VLF vs. Tan Delta vs. Partial Discharge
PDF
Testing Multiple Cables at Once
PDF
Very Low Frequency 0.1 Hz Ac: VLF-E SERIES
VLF-E Series Advantages
PDF
VLF-34E & VLF-65E Load Capability Charts
PDF
E-Link VLF Operating & Data Reporting Software.
PDF
VLF Cable Test Voltage per IEEE400.2-2013
PDF
Tan Delta Cable Diagnostics: TD SERIES
VLF-E Series Advantages
PDF
TD-34E Discontinued
PDF
VLF Testing vs. Tan Delta vs. Partial Discharge Explained
PDF
200 kV VLF Model: Packaging Options
Cable Fault Locators
CFL FAQ
What is Controlled, or Constant, Energy?
Why Three Output Voltage Taps?
Burn Current – What’s that used for?
Cable Fault Locators: CDS, SKD SERIES
What is a Constant Energy Thumper?
PDF
VLF Thumper Combo – What can it do?
PDF
Cable Testing & Fault Locating Packages
PDF
Network Fault Locating
Aerial Lift Testers: ALT, PTS, DTS SERIES
Aerial Lift Test Sets
PDF
ALT Advantages
PDF
Boom and Bucket HV testing – AC or DC Voltage?
Testing Hydraulic Boom Fluids? What is the standard?
Testing Truck Liners: AC or DC high voltage?
Which Model for Each Class of Truck to be Tested?
Parallel Resonant Technology: PAR SERIES
Parallel Resonant Technology
AC Dielectric Test Sets
PDF
AC Dielectric Test Sets: PFT & HPA SERIES
AC Dielectric Test Sets – Model & kVA Selection
PDF
Knowing the kVA or Load Current Needed
PDF
AC Hipot Inductive Input Compensation
PDF
Burn Mode – What is it, Why, & When to Use
PDF
Overview of Various Product Lines: 1 – 250 kVA
Not for Cable Testing – Most models
How to choose the kVA or load current needed.
How much AC load current can be expected based on hipot ratings?
Examples of Test Currents Needed
Inductive Compensation – What is it?
Burn Mode – What is it, Why, & When to Use
DC Hipot/Megohmmeter Combos: PTS SERIES
PTS Series Advantages
PDF
What is Guard/Ground Current Mode?
PDF
Oil Dielectric Testers: DTS & DTS-A SERIES
DTS Series FAQ
PDF
Caution: Charging Load – How to Discharge?
1% Input Voltage Regulator on 37.5 kV and 75 kV models.
Megohmmeter Readings Possible
What is Guard/Ground Mode?
Oil Dielectric Testers
How to Perfrom Tests
Caution: Voltage Flash-Over Indication May Read Low
Ω-Check Concentric Neutral Resistance Tester: OCK SERIES
How Does it Work?
PDF
Concentric Neutral Resistance Tester : the Ω-Check
PDF
Ω-Check Readings Less than One
PDF
What is the Ω-Check Used For
What Else Can be Used?
IEEE-XXXX-20…. Standard
HV AC/DC Dividers: DVR SERIES
What Measurment Instrument can be Used?
Applications & Ratings
VLF AC Hipoting Application Questionnaire
PDF
Cable Fault Locating Questionnaire
PDF
Motor Testing Application Questionnaire
PDF
Cable Testing & Fault Locating: Q’s for Ideal Product Needs
PDF
Substation Apparatus Application Questionnaire
Aerial Lift Testing: Booms & Buckets
Discussion: RMS vs. Peak Values
Inductive Input Compensation in AC Hipots
PDF
Multi Output Ratings: Voltage vs. kVA vs. Current
PDF
AC Burn Mode Circuit
PDF
Guard/Ground Return Current Circuit
PDF
Secondary Capacitive Current Cancellation Circuit
PDF
Safety While Testing With High Voltage
PDF
Safety Ground Shorting Sticks
PDF
Hand & Foot Safety Switches Available?
PDF
Vacuum Bottle Testing – AC or DC Voltage?
PDF
High Voltage Output Cable Precautions
PDF
What type of oil is used for high voltage tank insulation?
AC Hipots with captured HV output cable, like PFT-503CM – Silicon Oil only.
Leakage Current Measurements? – Use Corona Suppression Methods
Use of Inverter vs. Motor Generator?
GFI Nuisance Tripping?
DC Testing Long Cables – Limit Charging & Discharging Current
Category – DC
AC vs. DC Testing: Which – When – Why?
AC vs. DC Testing: Higher Load Currents Encountered – Why?
Category – AC
AC Testing Info & Tips
AC Hipot Model Selection – Voltage & Current Needed?
PDF
AC Hipots > 50kVac – No Cable Output Included
PDF
Vacuum Bottle Testing – AC or DC Voltage?
PDF
Caution: Know the Insulation of the Hipot’s Ouptut Cable
PDF
Multi-Voltage Output Hipots – kVA & Current at each Output
PDF
DC Testing Info & Tips
Using AC Hipots for Cable Testing?
AC Hipot Output Cable Capacitance – How Much Current Draw?
Cable Testing with 50/60 Hz. AC Voltage: Difficult & Expensive
Cable Capacitance too High – excessive current required.
Use 50/60 Hz Hipots, Parallel/Series Resonant Sets, or VLF?
The PFT-503CM is not useable.
DC Voltage Cable Testing not good for solid dielectric insulations
AC Hipot Model Selection – Voltage & Current Needed?
VLF Testing Info & Tips
AC Testing Info & Tips
Cable Fault Locating with Thumpers, TDR/Radar, & Listening Devices (full course 68 slides)
PDF
MV/HV Cable Testing Methods: Overview of All (54 slides)
PDF
Cable Fault Locating with TDR & Fault Pinpointing: Introduction
PDF
VLF & Tan Delta E-Link Software Hook-Up & Use
PDF
Cable Fault Pinpointing with the SDAD from Aquatronics
PDF
VLF E Series with Tan Delta Hookup & Control
PDF
E-Link VLF/TD Software Tour
PDF
HVI All Products Presentation
PDF
VLF, VLF TD, VLF PD Presentation: NECA 2010
PDF
TDR/Radar Training Brief
PDF
VLF Technology Overview, VLF Withstand, VLF TD, & VLF PD Cable Testing: 83 slides
PDF
Cable Fault Locating CDS Series: Hook-Up & Operation
PDF
VLF TD 2016 – Blue Slides
PDF
200 kVac VLF Cable Testing with the VLF-200CMF
PDF
Graphical Intro to Cable Fault Location
PDF
Automatic Oil Dielectric Testing: DTS A Series
PDF
HV Aerial Lift Testing using ANSI 92.2-2015
PDF
HVI Product Line Presentation
Testing VLF 0.1 Hz AC Technology
VLF Tan Delta Testing
VLF Partial Discharge Testing
VLF E Series Technology
Ω-Check Concentric Neutral Resistance Tester
VLF-200 Mobile Truck Lab for VLF/TD/PD Testing
PDF
VLF Cable Testing Overview FAQ
VLF Withstand & Diagnostic Testing
Motor & Generator High Voltage AC Testing_EIC 2013
PDF
World Shifts to VLF Testing – Were You In On It? IEEE 2010
Tan Delta Testing FAQ
PFT Series AC Hipots
PDF
PFT Series model PFT-503CM:
PTS-Series Model PTS-??
DTS Series
VLF Tests: Proof & TD/PD
Cable Fault Locating
AC Hipots & Dielectric Testers
DC Testing
Transformer Oil Used: MSDS Univolt N61B
MSDS Forms
Other Manufacturing Standards Observed
ISO ??
NEETRAC ?