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Vitrek 944i AC & DC Hipot Tester/Earth Continuity/Dielectric Strength Tester including ......Insulation Resistance Breakdown Test Capability |
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Featuring Five Programmable Instruments in One Hipot Tester
AC Hipot to 7KV
DC Hipot to 10KV
Earth Continuity Testing 1mΩ
Insulation Resistance 65GΩ to 2500V
Arc Detection with usec shutdown
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Please-mail ATEquip.com for Product Availability or a Price and Delivery Quotation. Thank you.

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Depend on Vitrek’s 944i for all of your programmable or manually operated High Voltage Hipot tester needs for testing electrical safety compliance, earth ground continuity, ground fault, insulation resistance, insulation resistance dielectric breakdown, and arc detection tests. |
Vitrek’s 944i Hipot Tester combines AC dielectric strength testing (AC Hipot) with DC dielectric strength testing (DC Hipot), High Voltage Insulation Resistance Withstand (HV IR ) with Arc Detection as well as a low Ohmic Earth Continuity measurement all in one feature-rich automated instrument. This compact dielectric tester lets you measure four electrical safety test parameters from a single test connection-all with the touch of a button.
The Vitrek 944i delivers top performance and versatility for manufacturing tests, product safety engineering, component evaluation, as well as research and development applications. Most hipot testers lack the sensitivity to accurately detect low leakage current levels. The 944i uses dynamic ranging to provide leakage readings down to 2μA full scale with 1nano-amp resolution.
When it comes to overall dielectric performance - You'll find that the multi-function 944i is loaded with features that even the larger more expensive dedicated testers don't offer. Powerful features including automatic calibration, built-in diagnostics, internal "watchdog" safety monitor, user memory for up to 100 test routines, arc detection and available interface package with IEEE-488.2, RS232 and direct test results printout capability.
Features and Benefits
AC & DC Hipot plus Insulation Resistance and Ground Continuity in a single
feature rich, compact instrument
AC Hipot to 5KV standard, 7KV and 10KVDC optional
Easy to use Full Menu Prompting, walks you through the test set-up
Test Database stores 200 test steps for easy recall
Powerful 35mA Sourcing capability
On-board Phase Detection measures "total", "real" or "imaginary" Leakage Current
Continuous Output Frequencies from 50 to 100Hz
IR measurement to 65GΩ
Continuity measurement 8.5Ω full scale, resolution to 1mΩ
Leakage Current measurement to 1na
Optional IF-4 Interface package includes GPIB, RS232, VICL & Printer Ports
Separate Ramp & Dwell, Min & Max current limits
Covers-on Automatic Calibration
Built-in controls for HV Scanner and Ground Bond Tester
Mark Certified to EN61010
Includes NIST Traceable Certification Option
Three Year Extended Warranty
Made in the USA
The Intelligent Choice for Operator Safety
At Vitrek, operator safety is not just a concern, it is a relentless commitment. So we engineered the 944i with a high-impact injection molded front-end with no exposed metal parts to present a potential user shock hazard. We put in an internal "watchdog" safety monitor which automatically shuts down the output in the event of an inadvertent disconnect. And the Vitrek 944i boasts an impressive user programmable "Arc Detection" circuit, capable of shutting down the high voltage system within microseconds.
For added peace of mind the onboard diagnostics of the 944i execute a complete check of all safety systems every time you power up.
If your product requires one of these labels. . . 
Demand that the Vitrek 944i label is on your Dielectric Analyzer. Only Vitrek minimizes overall test time and maximizes system reliability by combining four dielectric test functions in one unit.
It would hardly seem possible that a slow dielectric tester could back-up an entire production line. Yet with today's imposing 100% dielectric inspection requirements, the antiquated manual hipot tester is often the manufacturing bottleneck. Imagine the consequences of the tester breaking down or worse yet passing a defective product.
Just a few good reasons why each 944i Multi-function Dielectric Analyzer is equipped with two high performance microprocessors - to speed testing throughput and to execute exhaustive onboard diagnostics. Simply put, the Vitrek 944i provides the fastest, most accurate and reliable test results available. And it does it for a surprisingly modest price.
Powerful Yet Easy to Use
We've harnessed the power of the microprocessor to make this dynamic instrument simple and easy to operate. Specifically, the extensive use of menu prompting walks you through the test setup. Built-in user memory allows you to store, recall and edit up to 100 different test programs. All test parameters are fully user selectable - no hidden switches or pots to hamper operation.
The result is a clean, streamlined panel design that demands noticeably less effort to operate - and the unrivaled power to execute customized test routines at the touch of a button.
Capacity to Excel
With its full 35mA sourcing capability, the Vitrek 944i possesses the horsepower required to drive today's capacitively-filtered circuits - loads which the 10mA to 25mA units just can't handle. Yet, what sets the 944i apart from the rest is its ability to discriminate between in-phase and out-of-phase leakage currents.
This advanced feature enables you to measure the resistive current associated with insulation breakdown, the reactive component or the combination of both.
Vitrek Service & Support: Finest in the Instrument Industry
At Vitrek, we manufacture automated test instruments that are human engineered for friendly easy operation. But that's not where our commitment stops. We back you up with a worldwide network of Vitrek support centers. And we provide support by phone or email for any need or questions that may arise.
This all adds up to one point - you'll enjoy doing business with Vitrek. Our service technicians, application engineers and customer service satisfaction people just wouldn't have it any other way.
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Hipot Testers
Look to ATEquip.com and GW Instek for all of your Electrical Safety Compliance testing needs to satisfy compliance with UL/CSA/TUV/IEC 60601-1/ EN 60950/EN 60950-1 product safety testing compliance requirements. Vitrek offers Hipot Testers, Electrical Safety Testers, Ground Bond Testers, Voltage Withstand Testers, Dielectric Testers, and Insulation Resistance Testers to assist you in proving compliance to meet these regulations. |
NIST Traceable Calibration Certificates
To assist our customers in satisfying ISO-9001:2000, section 8.2, certified monitor and measurement calibration requirements, ATEQUIP.com can supply for all of the Vitrek products, certified NIST traceable calibration certificates from an ANSI/NCSL Z540-1-1994 compliant-accredited/ ISO 17025 accredited calibration laboratory. Please contact us directly for information on your specific test equipment interest. |
Vitrek 944i Programmable AC-DC Hipot Specifications |
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AC Dielectric Mode |
Voltage uncertainty is equal to the square root of the selected output. |
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| AC Output Voltage |
Output Voltage |
Accuracy |
100 VAC |
± 10.0 VAC |
500 VAC |
± 22.4 VAC |
1000 VAC |
± 31.6 VAC |
5000 VAC |
± 70.7 VAC |
| Output Frequency |
50Hz to 100Hz with 1Hz resolution independent of line power frequency |
| Output Waveform |
Digitally synthesized, low distortion sine wave |
AC Leakage Current Sensing Range |
Range |
Resolution |
Accuracy |
13.00uA |
10nA |
0.5% of reading ± 1uA |
1.300mA |
1uA |
0.5% of reading ± 10uA |
| 40.0mA |
100uA |
0.5% of reading ± 500uA |
Voltage Coefficient: 100pA/V |
AC Current Sensing: Resistive current (in-phase), reactive current (out-of-phase) or total current |
| AC Current Limits |
Range |
Current Limit |
| 100 to 500 VAC |
20mA |
| 500 to 3500 VAC |
35mA |
| 3500 to 4000 VAC |
30mA |
| 4000 to 4200 VAC |
25mA |
| 4200 to 4400 VAC |
20mA |
| 4400 to 4600 VAC |
15mA |
| 4600 to 5000 VAC |
10mA |
DC Dielectric Mode |
(AC Voltage specifications remain the same as the standard 944i as described above) |
| Examples |
Output Voltage |
Accuracy |
DC Output Voltage
(5000V Max without Opt. DC-7)
*Requires option DC-7 |
100VDC |
± 7.5 VDC |
| 500VDC |
± 16.8 VDC |
| 1000VDC |
± 23.7 VDC |
| 5000VDC |
± 53.0 VDC |
| 7000VDC* |
± 62.7 VDC |
| DC Voltage Output with option DC-10 |
Voltage uncertainty is equal to the square root of the selected output times 1.5. |
| Examples |
Output Voltage |
Accuracy |
DC Output Voltage
(5000V Max without Opt. DC-10)
**Requires option DC-10 |
100VDC |
± 15.0 VDC |
| 500VDC |
± 33.5 VDC |
| 1000VDC |
± 47.4 VDC |
| 5000VDC |
± 106.1 VDC |
| 7000VDC* |
± 125.5 VDC |
| 10000VDC** |
± 150.0 VDC |
DC Current Sensing |
DC Leakage Current Sensing Range |
Range |
Resolution |
Accuracy |
1.800uA |
1nA |
0.4% of reading ± 6nA |
18.00uA |
10nA |
0.3% of reading ± 30nA |
| 1.800mA |
1uA |
0.3% of reading ± 30uA |
| 40.0mA |
100uA |
0.3% of reading ± 300uA |
Voltage Coefficient: 15pA/V |
DC Current Limits
* Requires option DC-7 |
Range |
Current Limit |
| 100 to 500 VDC |
20mA |
| 500 to 4000 VDC |
35mA |
| 4000 to 4500 VDC |
30mA |
| 4500 to 5000 VDC |
25mA |
| 5000 to 7000 VDC* |
5mA |
| 100 to 10000 VDC** |
10mA |
| **Requires option DC-10 |
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Insulation Resistance (IR) |
Resistance Range |
Minimum Resistance |
Test Voltage |
2.6GΩ |
100KΩ |
100VDC |
13GΩ |
500KΩ |
500VDC |
26GΩ |
1MΩ |
1,000VDC |
| 65GΩ |
2.5MΩ |
2,500VDC |
Accuracy: Combined uncertainty of DC Voltage Output + Current Measurement Accuracy |
Earth Ground Continuity Low Resistance Mode
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Full Scale |
8.5Ω Maximum including lead resistance |
Resolution |
1mΩ |
Test Current |
50mA |
Lead Compensation |
Automatic offset circuit "nulls" out two wire lead resistance |
Accuracy |
0.3% of reading + 30mΩ (up to 5Ω) |
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Vitrek 944i General Specifications |
Arc Detection Sensitivity |
User selectable 3 microseconds to 30 microseconds |
Display |
40 character alphanumeric LCD |
High Voltage Indicator |
Lightning bolt illuminated by independent output voltage monitor. Audible alarm sounds prior to voltage output. |
Voltage Resolution |
1 volt AC or DC |
Dwell Time Accuracy |
+2 seconds/minute, -500mS/minute |
Slew Rate |
10 volts/second to 1999 volts/second, user selectable |
Limits |
Test automatically aborts when digitally stored minimum or maximum limit is exceeded. |
Remote Interface Option "IF-4" |
GPIB - IEE-488.2 Subset compatible
RS232C - 1200, 2400, 4800, 9600 Baud rate selectable
Parallel - IBM/Centronics compatible
VICL - Vitrek auxiliary unit control loop |
Accuracy |
Stated specifications are bipolar and apply for one year within ± 5°C from calibration temperature (20 to 25°C). |
Temperature Coefficient |
0.1 times stated accuracy per °C beyond calibration temperature window |
Calibration |
Traceable to the National Institute of Standards and Technology (NIST). Automatic "Covers on" calibration, internal or external. Calibration constants stored in non-volatile memory. |
Warm up Time |
30 minutes |
Operating Temperature |
0°C to 50°C |
Humidity |
90% RH, 0° to 40°C |
Power |
115/230 VAC ± 10%, 350 VA Max |
Dimensions |
89mm H x 432mm W x 457mm D (3.5" H x 17" W x 18" D |
Weight |
14Kg (34 lb.) Net / 18Kg (40 lb.) Shipping |
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Please-mail ATEquip.com for Product Availability or a Price and Delivery Quotation. Thank you.

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Ordering Information |
Prices listed in the table below are in US$ and apply to North American destinations only.
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Item |
Description |
Data Sheet |
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944i |
Hipot Dielectric Tester |
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$4550.00 |
Buy Now |
IF-4 |
GPIB, Serial, VICL & Printer Ports |
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755.00 |
Buy Now |
IF-1 |
Parallel Printer Interface Only |
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470.00 |
Buy Now |
TL-10 |
Test Leads with High Voltage Probe |
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90.00 |
Buy Now |
TL-20 |
Alligator Test Lead Set |
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80.00 |
Buy Now |
TL-115A |
Test Leads with 115 VAC Outlet |
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185.00 |
Buy Now |
TL-IEC |
IEC Power Socket Test Lead |
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90.00 |
Buy Now |
RBJ-1 |
Remote Audible Alarm |
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90.00 |
Buy Now |
RM-1 |
Rack Mount Kit |
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71.00 |
Buy Now |
RSS-1 |
Remote Start Switch |
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95.00 |
Buy Now |
RPO |
Rear Panel Outputs |
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95.00 |
Buy Now |
SIJ-1 |
Safety Interlock Jack |
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95.00 |
Buy Now |
PLC-2C |
PLC Logic Level Interface |
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142.00 |
Buy Now |
QT-1 |
QuickTest™ 944i Software |
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280.00 |
Buy Now |
QT-2 |
Bundled QuickTest™ Software with PC GPIB Card & Cable |
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850.00 |
Buy Now |
QT-3 |
Quick Test™ Software for Win 98/2000/XP/NT includes NI-GPIB Card & Cable |
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945.00 |
Buy Now |
LVIR |
Adds 10 to 99 VDC Operation for MW |
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280.00 |
Buy Now |
LO-500 |
Extends Low W range to 500W |
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280.00 |
Buy Now |
ADC-200K |
Automatic Load Discharge |
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280.00 |
Buy Now |
GP-1 |
1 Meter Shielded GPIB Cable |
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80.00 |
Buy Now |
GP-2 |
2 Meter Shielded GPIB Cable |
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90.00 |
Buy Now |
RS-1 |
6' RS-232 Cable |
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41.00 |
Buy Now |
PAR-1 |
6' Parallel Printer Cable |
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41.00 |
Buy Now |
DC-7 |
Boosts Max DC Output to 7KV |
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280.00 |
Buy Now |
DC-10 |
Boosts Max DC Output to 10KV |
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1,230.00 |
Buy Now |
AC-8 |
Boosts Max AC Output to 8K VAC |
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1,135.00 |
Buy Now |
OM-944 |
Additional Operator's Manual |
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61.00 |
Buy Now |
SPK-944 |
5 Year Spare Parts Kit |
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375.00 |
Buy Now |
| EXW-2 |
2 Year Warranty, with initial purchase |
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465.00 |
Buy Now |
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