VLF 0.1 Hz AC Technology
Tech Talk & Teach
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
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?
Network Fault Locating
Cable Capacitance Calculator
Aerial Lift Testers
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
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
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?
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
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-??
VLF Tests: Proof & TD/PD
Cable Fault Locating
AC Hipots & Dielectric Testers
Transformer Oil Used: MSDS Univolt N61B
Other Manufacturing Standards Observed