Introducing the Vitrek 98x Teraohmmeter/Insulation Resistance (IR) Tester

Expanding the possibilities of High Voltage Resistance Measurement

The new 981i and 983i Teraohmmeters are designed to tackle the toughest High Resistance measurement applications. Demanding applications that most other IR testers won’t measure up to. So when it’s time to test higher voltage IR values like today’s electric vehicle systems and higher voltage solar arrays — look to Vitrek to deliver the IR tester you need for your production line.

What sets the Vitrek 98x Series IR testers apart from the others?
For starters, these units are based on Vitrek’s proven DSP technology — so they have the ability to work into capacitive loads where most others do not. And when it comes to output voltage range, Vitrek delivers — with up to 6.5 KVDC for the 981i and up to 11KV with the 983i.

Need to measure IR on a Multi-Conductor Cable Harness?
The 981i and 983i have the ability to directly control up to four 64 channel HV scanners, right out of the box. That is up to 256 test points and using a PC with Vitrek’s Q-Test software you can expand the count up to 1020 test points. The HV Switching System of choice is the Vitrek 964i, which can hold eight 8-channel switching cards — available in 7, 10 and 15KV ratings.

Key Features

Key Benefits

The 98x Series Teraohmmeter meets today’s demanding requirements for higher voltage IR testing.

In a never ending race for higher efficiency, electric vehicles and solar panel arrays are now operating with voltage rails up to 2.5 KV.  This is no place for a 1 KV tester, it’ time to step up to a Vitrek 98x!

Built upon the same DSP technology that has established Vitrek as a leader in hipot test systems, the 98xi devices feature a unique combination of performance features including:

• Multi-dwell Functionality (multiple steps without having to return to zero between steps)
• High-speed Testing (with dwell times as low as 100 ms)
• Pico-Amp Leakage Measurement (with stable and precise 50 Teraohm IR readings)
• Continuously Variable IR Test Voltage (adjustable over the full output range of the instrument)
• Multi-mode IR (three test modes – end on time, end on pass, end on fail)
• Capacitance Test Modes (critical for solar panels, cable harnesses and other capacitive loads)

For applications requiring IR testing of multiple conductors, the Vitrek 98×1 IR Testers have the capability of directly controlling up to four 64-channel Vitrek 964i high-voltage scanners. Utilizing a PC equipped with Vitrek’s QT Enterprise™ software, the same instrument can handle up to 1020 test points.

Specifications

General Specifications

Specifications: Valid after 15 minute warm-up, for 1 year from last external calibration, and for ambient temperature within +/- 2 Degrees C of last performed ZERO operation.

Ethernet: High speed, high noise immunity LAN interface
RS232 Interface: Selectable baud: 9600, 19200, 38400, 57600 or 115200, full handshake
VICL Interfaces: Provided for control of HV Scanners
Digital I/O Interface: Provides 4 digital inputs and 5 digital outputs. Functions include, Start/Stop, Testing, Pass/Fail, HV Present, Safety Interlock, Dwell Timer
Optional GPIB: Option GPIB-9 adds GPIB interface capability
Operating Temperature: 0°C to 50°C
Humidity: <85% RH (non-condensing)
Power: 105-265Vrms, 45-65Hz, 500VA Max
Dimensions: 89mm H x 432mm W x 457mm D (3.5″ H x 17″ W x 18″ D)
Weight: 5Kg (11 lb.) Net / 7Kg (15 lb.)
Accessories: Alligator test leads, NIST traceable calibration certificate with no data, power cord and operator’s manual. Limited ISO 17025 cal cert with data & uncertainties available.

DC Output Voltage

981i: 30V to 6500V
Accuracy: +/- (0.25% rdg + 0.1V)
981i with option HSS2: 30V to 5000V
Accuracy: +/- (0.25% rdg + 0.1V+1V/mA)
983i: 60V to 11000V
Accuracy: +/- (0.25% rdg + 0.2V)
Output Resolution: 1V
Loading: up to 4mA charging, 2mA continuous

Current Measurement

981i & 983i RETURN current only, 1pA to 4mA
Accuracy (Resistive Load up to 1000pF): +/- (0.5%rdg + 10pA + 2pA per kV))
Accuracy (Capacitive Load 1000pF to 50nF): +/- (0.5%rdg + 100pA + 20pA per kV))
Accuracy (Capacitive Load >50nF): +/- (0.5%rdg + 1nA + 200pA per kV))

Option HSS2 HV Output current, 1nA to 4mA (for grounded loads)
Accuracy (Resistive Load up to 1000pF), C<1000pF): +/- (0.5%rdg + 5nA + 1nA per kV)) Accuracy (Capacitive Load 1000pF to 50nF): +/- (0.5%rdg + 7.5nA + 2.5nA per kV)) Accuracy (Capacitive Load >50nF): +/- (0.5%rdg + 10nA + 5nA per kV))

Resistance Measurement
NOTE: the use of the OFFSET (or ZERO) capability in either AUTO or MANUAL TEST modes is not required to meet these specifications – the OFFSET capability is intended to allow the user to offset externally produced leakages.

Transfer Measurement

Comparative Measurement Capability (measurement of multiple values within 10% at the same test voltage, in the same environmental conditions within +/-1C, within a 1 hour period, with no intervening ZERO operations, and constant power)

Uncertainty (Resistive Load): +/- (0.05%rdg + (R/(5Tohm per kV))%rdg + (1/V)%rdg + 2ohms per kV) for R < 150Tohm

Timing

Charge Time: 1 second minimum charge time, 9999 sec max.
Dwell Time: 0.1s to 9999 days, 0.1 sec resolution