Please Note: The Tech Talk & Teach library is still under development and construction.
We will continue to grow our content library, so please be sure to check out the page regularly!
VLF 0.1 Hz AC Technology
Tech Talk & Teach
VLF FAQ
What Loads Can VLF Test per Standards?
VLF Series and VLF-E Series, what’s the difference?
E-Link VLF Operating & Data Reporting Software.
VLF Tan Delta and Partial Discharge, Explain?
E Series Event/Error Codes
VLF Cable Test Voltage per IEEE400.2-2013
VLF Cable Test Voltages IEC vs. IEEE
Acceptable Frequency Outputs
VLF 34E Load Chart
VLF-65E Load Chart
VLF Test Voltages vs Uo Rating
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?
VLF Thumper Combo – What can it do?
TDR Questions
Network Fault Locating
Cable Capacitance Calculator
Aerial Lift Testers
ALT FAQ
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
Resonant FAQ
AC Dielectric Test Sets
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/Megohmmeters
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
DTS Test Standards International
Concentric Neutral Resistance Tester : the Ω-Check
What is the Ω-Check Used For
How Does it Work?
What Else Can be Used?
IEEE-XXXX-20…. Standard
HV AC/DC Dividers
What Measurment Instrument can be Used?
Applications & Ratings
VLF AC Hipoting Application Questonairre
VLF 200 kVac Model Application Questonairre
Cable Fault Locating Questionnaire
Substation Apparatus Application Questionnaire
Aerial Lift Testing: Booms & Buckets
Inductive Input Compensation in AC Hipots
Output Cable Capacitance Effect on AC Hipots
Multi Output Ratings: Voltage vs. kVA vs. Current
Burn Mode Feature – What is it?
Guard/Ground Return Current Circuit Explanation
Discussion: RMS vs. Peak Values
Grounding Hipot Suggestions
Current Return Lead – Ground or Guarded Return post?
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
Output Cable from Hipot – What to Use?
Use of Inverter vs. Motor Generator?
GFI Nuisance Tripping?
DC Testing Long Cables – Limit Charging & Discharging Current
AC vs. DC Testing: Which – When – Why?
AC vs. DC Testing: Higher Load Currents Encountered – Why?
AC Hipot Leakage Current – Why can’t I get full rated output current?
Selecting an AC Hipot kVA Rating; How Much Current is Needed?
HV AC Hipots >40kVac – No Cable Output Included
Vacuum Bottle Testing: Use AC – not DC Voltage. The HVI Differences
AC Hipot Output Cable Capacitance – How Much Current Draw?
Using AC Hipots for Cable Testing?
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?
Calculating the AC Current Needed from Hipot.
Multi Voltage Output AC Hipots – kVA & Current at each Output
DC Testing Info & Tips
VLF Testing Info & Tips
AC Testing Info & Tips
Testing VLF 0.1 Hz AC Technology
VLF Tan Delta Testing
VLF Partial Discharge Testing
VLF E Series Technology
VLF/TD E-Link Software
Cable Fault Locating incl. TDR & Fault Pinpointing
Oil Dielectric Testing
Aerial Lift
Ω-Check Concentric Neutral Resistance Tester
VLF Cable Testing Overview FAQ
VLF Withstand & Diagnostic Testing
EIC 2013 Motor/Generator AC Testing
World Shifts to VLF Testing – Were You In On It?
Tan Delta Testing FAQ
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
Other
Transformer Oil Used: MSDS Univolt N61B
MSDS Forms
Other Manufacturing Standards Observed
ISO ??
NEETRAC ?