High-Voltage-Instrument
High Voltage Instrument
Dr. Aladar Kohalmi Ph.D
218, White St., Danbury Ct. 06810, sales@highvoltageins.com
Tel: +1(203)-748-7731  or  +1(203)-792-9752

High Voltage Instrument has been a manufacturer of quality high voltage test equipment for over 40 years. We are located in Danbury, Ct. with a sales and repair service facility in Budapest, Hungary.


Portable Impulse Generators
200 kV portable impulse generator
Impulse generator is lightning strike simulator capable of producing a waveform, which conforms to industry standards.
Rise time is 1.5 microseconds, the tail time is 50 microseconds long.
The unit is constructed with plug-in type resistors for ease of waveform changing.
Portable Impulse Generators for lightload 200 kV 500 kV.
The BIL tester is designed for testing medium voltage switch gears, circuit breakers, bushings, bus network.
It is easy to use, can be operated by anyone.

Specification:
High voltage section:
Lightning strike [1.2/50 usec] output 5 - 10 stages, 0,1 uF/40 kV.
Capacitors +/- 40 kV manually reversible power supply.

Front - and tail resistors set for 1.2/ usec waveform. Very compact design!










Smart Controller:


OWON scope Just dial the requested Impulse voltage, switch HV ON and press IMPULSE button.
Built - in capacitive voltage divider [critically damped] preload.
Input power: 120 V, 60 Hz max 3 A.
Output waveform monitor.
OWON battery operated digital color scope.
















Options:
4" calibrating Sphere Gap. Pearson current transformer to measure current. Available in 200 kV, 280 kV and 500 kV (two same size modules on top of each other)

Standards:
The BIL is in full accordance with the ANSI C37.20.2-1999 Standard, Section 5.2.3 Voltage withstand levels for metal-enclosed interrupter switchgear.



Higher energy easy to transport Impulse Generators on wheels.




IG 200 and IG 300

200 and 300 kV portable impulse generator Model number: IG 200 and IG 300
Description:
200 - 300 kV 6 kJ complete impulse generator.
Features:
Compact design on wheels. Welded PVC Structure. Optional computer interface.
Advanced operator friendly design.
In order to make a given value impulse, the operator only has to dial the requested Output voltage, and press HV ON and IMPULSE button.
Capacitor Bank and Power Supply:  26" W, 56" H, 40" D
Controller:  19" W, 5" ¼ H, 12" D
Including:
Wave forming resistors, Voltage divider, Preload capacitor, Smart Digital controller.
Main Supply: 115 V, 20 Amps Standard outlet.
Price for IG 200: $ 30.000. -IG 300: $ 39.000.-





IG 500

500 kV portable impulse generator Model number: IG 500
Description:
500 kV 2 kJ complete generator.
Features: Compact design on wheels. Welded PVC structure. Dust enclosure.
In order to make a given value impulse, the operator only has to dial the requested output voltage, and press IMPULSE button.
Capacitor Bank and Power supply: 32" W, 72" H, 46" D.
Controller: 19" W, 5" ¼ H, 12" D.
Including:
Capacitor bank, Reversible power supply, Wave forming resistors, Voltage divider / preload capacitor, Smart digital controller, OWON scope.
Main supply: 115 V 20 amps Standard outlet.
Price: $ 56.000.-







Smart Digital Controller for Impulse Generator

Smart Digital Controller for Impulse Generator
Very easy control an impulse generator, just dial the actual impulse voltage, click on HV-ON and FIRE. (Impulse)








Integrated Impulse Generator

Generator is a one piece complet impulse test equipment, on wheels.
Very easy to test a transformer:
1.) Roll it over to transformer.
2.) Ground the generator.
3.) Connect only 3 wires to transformer: voltage, return (shunt),ground.
On Smart Controller. Dial BIL Set 50%, press HV ON, IMPULSE Few second later.
Set 100%, press HV ON, IMPULSE.
Digitizer recorded every voltage- and current waveforms.
It makes decision go - no go, good or bad the transformer.
Price: 200 kV $ 58.000.-













integrated generator+controller





Digital recorder


High Voltage Instrument has developed a revolutionary new high voltage impulse measuring system with fiber optic isolation.
Our patented isolation system created by  Dr. Aladar Kohalmi PhD.
(Patent Pending No. P0402120)  digitizer is built into the high voltage divider, connected to the computer by using fiber optic cable.
This system eliminates the galvanic connection between the high voltage ground (impulse generator), the measuring system (computer) and the operator.
The old outdated digital recorders still use coaxial cables and heavy EMI/RFI enclosures.
During the fast rise-time of the high voltage impulse, high current flows through the grounding wires and coaxial cable shield, causing large measurement errors.
Furthermore, this high current can potentially damage the computer, and endanger the operator.
In our years of experience in the field, we have seen a difference in potential greater than 50 kV between a "well" grounded generator and far earth ground.


Digitizer with resistive voltage Divider + Shunts





Input range, Voltage: 200 kV, 300 kV, 500 kV
Input impedance: 5 - 15 kOhm
Input range, current: 0,5 - 500 A
Resolution rate: 14 bit (16384 steps)
Sampling rate: 100 MS/sec for Lightning test.
Connection: Fiber optic between the divider + shunt and the PC(Patent pending technology)
Including: EMP protected Panasonic Toughbook, which could work without any shield, or shielded room.
Price: $ 29.000.-



Digitizer with resistive voltage Divider + Shunts







Applications:
Lightning and Switching surge tests.
Resolution,Vertical: 14 bit (16384 steps)
Sampling rate:
100 MS/sec for Lightning test, 10 MS/sec for Switching surge Input range.
Voltage Max 1 kV
Input range, current: Built in high current shunts 0,5 - 500 A
Fiber optic connection.
Price: $ 19.000.-























































High Voltage Instrument