Vitrek 950 Series Hipot Insulation Resistance Ground Testers Specifications

95X Series Performance Specifications

95X Series Performance Specifications are valid at the 95x terminals for 1 year at ambient temperatures within ±5C of calibration temperature (add 5% of accuracy specification per C outside of this). All specifications are relative to the calibration standards used. Add ½ digit to all accuracies for displayed results (results available with enhanced resolution from interfaces).

AC VOLTAGE WITHSTAND AND LEAKAGE TESTING (ACEZ, ACW AND ACCAP)

LOADING CAPABILITY

The listings below show the maximum loading current and power capabilities of the 95x at ambient temperatures ≤30C. For ambient temperatures above 30C linearly reduce the maximum loading current and power by 1%/C.
For frequencies above 100Hz other than 400Hz, the user should linearly interpolate using the <100Hz and 400Hz capabilities shown in the applicable listing. Where both a current and power limit is shown, the most stringent limit applies. 951i-954i and 957i, <100Hz : 50mArms (40mArms resistive), reduce by 0.08mA per V above 5525Vrms 951i-954i and 957i, 400Hz : 35mArms, reduce by 0.065mA per V above 5600Vrms Option AC-2, <100Hz : 200mArms (135mArms resistive), reduce by 0.67mA per V above 1750Vrms Option AC-2, 400Hz : 140mArms, reduce by 0.4mA per V above 1700Vrms Option 500VA, <100Hz : 100mArms (50mArms resistive), reduce by 0.14mA per V above 5425Vrms 500VA Above 65mArms has a limited test time (e.g. 1sec at 100mArms) Option 500VA, 400Hz : 85mArms (50mArms resistive), reduce by 0.11mA per V above 5375Vrms Above 65mArms has a limited test time (e.g. 1sec at 100mArms) 955i and 957i Opt. AC-10, <100Hz : 30mArms (20mArms resistive) 955i and 957i Opt. AC-10, 400Hz : 22mArms Option AC-30 : 10mArms (7mArms resistive) 250VA

SURGE CURRENT LIMITING AND SHUTDOWN

Impedance Limiting
951-4i and 957i (standard build) : 12KΩ + 0.5H
Opt. 500VA : 7KΩ + 0.25H
Opt. AC2 : 1.4KΩ + 0.2H
955i and 957i Opt. AC10 : 25KΩ + 1.0H
SOURCE set to EXT : 200KΩ

Peak Shutdown Current
951-4i and 957i (standard build) : 120mA
Opt. 500VA : 145mA
Opt. AC2 : 280mA
955i and 957i Opt. AC10 : 60mA
SOURCE set to EXT : 21mA
DUT GROUNDED set to YES : 50mA

TEST VOLTAGE AND FREQUENCY

Test Voltage Range
951-4i and 957i (standard build or Opt. 500VA) : 20 to 6000Vrms, reduce maximum voltage by 0.6V per Hz above 100Hz
955i and 957i Opt. AC-10 : 50 to 10000Vrms, reduce maximum voltage by 1V per Hz above 100Hz
Opt. HSS : 20 to 4000Vrms
Opt. AC-2 : 10 to 2000Vrms, reduce maximum voltage by 0.2V per Hz above 100Hz
Opt. AC-30 : 120 to 30000Vrms
For line voltages below 115V linearly reduce the maximum test voltage by 1%/V unless Opt. LOLINE is fitted (there is no reduction for Opt. LOLINE).

Test Voltage Accuracy
<(± 0.5% ± 1.5V ± (0.01% + 0.2V) per mArms load ± 0.01% per Hz above 100Hz) 955i and 957i Opt. AC10 : Add ±0.1% above 7000Vrms Opt. AC-30 : <(± 1.5% ± 5V ± (0.05% + 1V) per mArms load) Test Voltage Overshoot <5% ( <2% (>0.5s ramp time) Settling to
<±0.5% of final value in Test Voltage Waveform Sinewave, 1.35 – 1.46 Crest Factor Test Frequency Range 951-4i and 957i : 20 to 500Hz 955i and 957i Opt. AC10 : 40 to 500Hz Opt. AC-30 : 40 to 80Hz Test Frequency Accuracy <±0.1%

CURRENT MEASUREMENTS (DUT ISOLATED)

Measurements are performed in the RETURN terminal of the 95x.

Breakdown Current
1uA to 280mApk (DC-50kHz bandwidth)
<(± 1% ± 1uA) accuracy <30usec detection time, <3msec response time (typically <500usec) Leakage Current 0.0nA to 200mArms (RMS, In-phase or Quadrature) Greater of 1 cycle or 10ms measurement period RMS : <(± 0.5% ± 10nA ± 0.15nA per kV*Hz) accuracy InPhs : <(± 0.5% ± 10nA ± 0.01nA per kV*Hz) accuracy Quad : <(± 0.5% ± 10nA ± 0.15nA per kV*Hz) accuracy Add 0.005% per Hz above 100Hz 955i and 957i Opt. AC10 : Add 50nA (RMS, InPhs and Quad) above 7000Vrms <±0.005° per Hz phase relative to test voltage (InPhs, Quad) Arc Current 1 to 30mArms (50KHz-5MHz bandwidth) <(± 10% ± 1mA) accuracy at 1MHz 4us, 10us, 15us, 20us, 30us or 40us measurement period Cable Compensation <(± 1% of error ± 0.01pF)

CURRENT MEASUREMENTS (DUT GROUNDED, OPTION HSS ONLY)

Measurements are performed in the HV terminal of the 95x.

Breakdown Current
1uA to 50mApk (DC-50kHz bandwidth)
<(± 1.5% ± 1uA) accuracy <30usec detection time, <3msec response time (typically <500usec) Leakage Current 0.0nA to 35mArms (RMS, In-phase or Quadrature) Greater of 1 cycle or 10ms measurement period RMS or Quad : <(± 1.5% ± 100nA ± 10nA per kV*Hz) accuracy InPhs : <(± 1.5% ± 100nA ± 1nA per kV*Hz) accuracy Add 0.005% per Hz above 100Hz <±0.005° per Hz phase relative to test voltage (InPhs, Quad) Cable Compensation <(± 1% of error ± 0.1pF)

CAPACITANCE AND DISSIPATION FACTOR MEASUREMENTS (ACCAP TYPE)

Capacitance
Add Test Voltage, Frequency, and Quad Leakage Current Accuracies as percentages
Examples at 1000V/60Hz with an isolated DUT –
1pF (= 377nA) : 0.65% + 0.1% + 4.73% = ±5.48%
10pF (= 3.77uA) : 0.65% + 0.1% + 0.92% = ±1.67%
100pF (= 37.7uA) : 0.65% + 0.1% + 0.54% = ±1.29%
1nF (= 377uA) : 0.65% + 0.1% + 0.5% = ±1.25%
10nF (= 3.77mA) : 0.65% + 0.1% + 0.5% = ±1.25%
100nF (= 37.7mA) : 0.65% + 0.1% + 0.5% = ±1.25%

Dissipation Factor
For test voltages >100V at 60Hz and capacitive load currents >200uA, the DF accuracy is ±0.005.
For accuracy under other circumstances please contact ViTREK.

TEST TIMING

Ramp
0.00 to 9999sec <(± 1% ± 0.1sec ± 1 cycle) accuracy Dwell 0.02 to 9999sec or user terminated <(± 0.05% ± 20ms ± 1 cycle) accuracy Fast Discharge <(20ms + 1 cycle)

DC VOLTAGE WITHSTAND AND LEAKAGE TESTING (DCEZ, DCW AND DCIR)

Loading Capability

The listings below show the loading capabilities of the 95x at ambient temperatures ≤30C. For ambient temperatures above 30C linearly reduce the maximum loading power and current by 1%/C.
Output powers above 200W have a limited test time (e.g. 4 seconds at 250W).
Capacitive loading is only limited by the maximum ramp time (9999.9sec) and the maximum load current, typically this is a 1F load.
951i, 952i and 956i : <50mA, reduce by 0.05mA per V above 6000V 953i, 954i and 955i : <9000V : <30mA, reduce by 0.0067mA per V above 6000V, >9000V : <10mA, reduce by 0.0025mA per V above 9000V 957i : <10mA, reduce by 0.001mA per V above 10000V

Surge Current Limiting and Shutdown

Impedance Limiting
951i, 952i and 956i : 6.5KΩ
953i, 954i and 955i : 12.5KΩ
957i : 24 KΩ

Peak Shutdown Current
951i, 952i and 956i : 80mA (50mA if DUT GROUNDED set to YES)
953i, 954i and 955i : 40mA
957i : 20mA

Test Voltage

Test Voltage Range
951i, 952i and 956i : 30 to 6500V
953i, 954i and 955i : 50 to 11000V
957i : 100 to 15000V
Opt. HSS : 30 to 5000V
For line voltages below 115V linearly reduce the maximum test voltage by 1%/V unless Opt. LOLINE is fitted (there is no reduction for Opt. LOLINE).

Test Voltage Accuracy
Except 957i: <(± 0.25% ± 1.25V ± (0.01% + 0.05V) per mA load) 957i: <(± 0.75% ± 2V ± (0.01% + 0.05V) per mA load), add 0.5% above 10000V Test Voltage Overshoot <5% ( <1% Settling to <±0.1% of final value in <0.5sec

Current Measurements (DUT Isolated)

Measurements are performed in the RETURN terminal of the 95x.

Breakdown Current
1uA to 280mApk (DC-50kHz bandwidth)
<(± 1% ± 1uA) accuracy <30usec detection time <3msec response time (typically <500usec) Leakage Current 0.0nA to 200mA 7.25msec measurement period (100ms for dwell time >2 sec)
<(± 0.25% ± 0.5nA) accuracy Capacitive Loading Effects : 951i, 952i and 956i : add X * (± 0.2nA ± (2.5nA per KV)) 953i, 954i and 955i : add X * (± 0.3nA ± (3.5nA per KV)) 957i : add X * (± 0.5nA ± (5nA per KV)) X = (C/0.01uF) below 0.01uF, or X = √(C/1uF) above 1uF, or otherwise X = 1.0 Arc Current 1 to 30mArms (50KHz-5MHz bandwidth) <(± 10% ± 1mA) accuracy at 1MHz 4us, 10us, 15us, 20us, 30us or 40us measurement period Cable Compensation <(± 1% of error)

Resistance Measurements (DUT Isolated)

Measurements are performed between the HV and RETURN terminals of the 95x.
For applied voltage, breakdown current and arc current accuracies see above.
In the chart below R is the reading in Ohms, C is the capacitive loading. Interpolate between voltages as needed, for accuracies at capacitances above 5uF consult ViTREK. Accuracies are shown as the percentage of the reading.

Current Measurements (DUT Grounded, option HSS only)

Measurements are performed in the HV terminal of the 95x.

Breakdown Current
1uA to 50mApk (DC-50kHz bandwidth)
<(± 1% ± 1uA) accuracy <30usec detection time <3msec response time (typically <500usec) Leakage Current 0.00uA to 50mA 7.25msec measurement period (100ms for dwell time >2 sec)
<(± 1% ± 50nA ± (10nA per KV)) accuracy Capacitive Loading Effects : Add X * (± 0.2nA ± (2.5nA per KV)) X = (C/0.01uF) below 0.01uF, or X = √(C/1uF) above 1uF, or otherwise X = 1.0 Cable Compensation <(± 1% of error)

Resistance Measurements (DUT Grounded, option HSS only)

Measurements are performed between the HV terminal of the 95x and ground.
For applied voltage, breakdown current and arc current accuracies see above.
In the chart below R is the reading in Ohms, C is the capacitive loading. Interpolate between voltages as needed, for accuracies at capacitances above 5uF consult ViTREK.

Test Timing

Ramp
0.01 to 9999sec
50kV/sec max slew rate
<(± 1% ± 0.1sec) accuracy with typical loads 0.5sec minimum for 957i only Dwell 0.02 to 9999sec or user terminated <(± 0.05% ± 20ms) accuracy (add 100ms for dwell time >2 sec)

Delay
0.00 to 9999sec
<(± 0.05% ± 20ms) accuracy

Discharge

Fixed Discharge
Always selected
951i,952i,956i : Nominal loading 7MΩ
953-5i : Nominal loading 13MΩ
957i : Nominal loading 17MΩ

Controlled Discharge
Auto-selected resistance values in real-time during discharge
Selection Criteria : 951i,952i,956i : Nominal loading 9.5KΩ or 40KΩ
953-4i and 957i : Nominal loading 9.5KΩ or 40KΩ or 240KΩ
955i : Nominal loading 15KΩ or 40KΩ or 240KΩ

Minimum Discharge Time
<(20ms + 10ms per kV) (below 7500V)

PULSED VOLTAGE WITHSTAND TESTING (PULSE)

Test Voltage and Loading Capability

Test Voltage
951-4i (standard build): 50V to 8000V
951-4i (opt. AC2): 20V to 2750V

Output Impedance
951-4i (standard build): 12Kohm + 0.5H nominal output impedance
951-4i (opt. AC2): 1.4Kohm + 0.2H nominal output impedance

Max Load Current
Limited by the lesser of –
a) the test voltage and output impedance
b) 145mA (288mA for Opt. AC-2).

Measured Test Voltage Accuracy

Test Voltage Accuracy
<(± 0.5% ± 5V ± (0.2V per mA load))

Load Current Measurements

Measurements are performed in the RETURN terminal of the 95x.

Breakdown Current
1uA to 280mApk (DC-50kHz bandwidth)
<(± 1% ± 1uA) accuracy Arc Current 1 to 30mArms (50KHz-5MHz bandwidth) <(± 10% ± 1mA) accuracy at 1MHz 4us, 10us, 15us, 20us, 30us or 40us measurement period

Test Timing

The ramp and dwell times are those specified ± 100us

DC BREAKDOWN VOLTAGE DEVICE TESTING (BRKDN)

Specifications are as for the DC Voltage Withstand Test types except as shown below.
The BRKDN type must not be used with loads having >0.05uF capacitance.

Voltage and Current Accuracy

Breakdown Voltage Accuracy
<(± 0.5% ± 1.5V) Breakdown Current Accuracy <(± 1.5% ± 3uA)

Test Timing

Ramp and Search <50kV/sec , ± 15% ± 10ms accuracy

DC LOW RESISTANCE TESTING (LOWΩ)

Test Current Source

Test Current
55mAdc max
Opt. LRE-10 : 10mAdc max
Open Circuit Voltage
5V (nominal)
Source Resistance
130Ω (nominal)
Opt. LRE-10 : 530 Ω (nominal)

Measurement Accuracy (2-Wire)

Measurement Period
7.25msec measurement period (100ms for test time >2 sec)

Accuracy
<30KΩ : 0.8% + 0.02Ω 30-100KΩ : 1.5% 100-150KΩ : 5% Opt. LRE-10 : add 0.001Ω Using rear terminals (option RPO only) : add 0.3Ω Lead Compensation <(±1% of error ± 0.005Ω)

Measurement Accuracy (4-Wire)

Measurement Period
7.25msec measurement period (100ms for test time >2 sec)
Accuracy <30KΩ : 0.8% + 0.002Ω 30-100KΩ : 1.5% 100-150KΩ : 5% Opt. LRE-10 : add 0.001Ω Lead Compensation <(±1% of error ± 0.001Ω) 4-wire Compensation SOURCE <(±1% total lead impedance, 100Ω max) SENSE <(±0.1% total lead impedance, 100Ω max)

Test Timing

Test Time
0.02 to 9999sec or user terminated
<(0.05% + 20ms) accuracy (add 100ms for test time >2 sec)

Delay
0.00 to 9999sec
<(0.05% + 20ms) accuracy (add 100ms for test time >2 sec)

AC GROUND BOND TESTING (GBEZ AND GB)

Test Current Source

The following apply at the SOURCE terminals.

Test Current Range
0.100 to 40.000Arms

Test Current Accuracy
<(±0.5% ± 0.005A ± 0.005% per Hz above 100Hz) accuracy Test Current Overshoot <10% ( <5% ( <2% (>0.5s ramp time)
Settling to <±0.5% of final value in Test Frequency 40Hz to 500Hz <0.1% accuracy Test Waveform Sinewave, 1.3 – 1.5 Crest Factor Compliance (8Vrms – 0.015V/A) max compliance at test frequencies <75Hz. For line voltages below 115V linearly reduce the maximum compliance by 1%/V unless Opt. LOLINE is fitted (there is no reduction for Opt. LOLINE). Loading 10ohm max impedance (any phase, within compliance limits) 250W maximum load power

Voltage Measurements

The following apply at the SENSE terminals.

Range
0uV to 8.0000Vrms (RMS, In-phase and quadrature)

Accuracy
<(±0.5% ± 30uV ± 0.5uV*A) accuracy (add 0.005% + 0.05uV*A per Hz above 100Hz) <±0.005° per Hz phase relative to test current Cable Compensation <(1% of error)

Impedance Measurements

Accuracy
Add Test Current and Voltage Accuracies as percentages
Examples at 50 or 60Hz –
0.1ohm at 1A : 1% + 0.53% = 1.53%
0.1ohm at 10A : 0.55% + 0.5% = 1.05%
0.1ohm at 40A : 0.51% + 0.5% = 1.01%
0.01ohm at 1A : 1% + 0.8% = 1.8%
0.01ohm at 10A : 0.55% + 0.53% = 1.08%
0.01ohm at 40A : 0.51% + 0.51% = 1.02%
0ohm at 1A : 30.5uohm
0ohm at 10A : 3.5uohm
0ohm at 40A : 1.25uohm

Test Timing

Ramp
0.00 to 9999sec
<(± 1% ± 0.1sec ± 1 cycle) accuracy Dwell 0.02 to 9999sec or user terminated <(± 0.05% ± 20ms ± 1 cycle) accuracy Fast Discharge <(20ms + 1 cycle)

GROUND LEAKAGE TESTING (DCI AND ACI)

HV Voltage Measurements

DC Voltage Range
951i,952i,956i : 0.0 to +/-8000V
953i,954i,955i : 0.0 to +/-11000V
Option HSS : 0.0 to +/-5000V

AC Voltage Range
951-4i,956i : 0.0 to 6000Vrms
955i : 0.0 to 10000Vrms
Option HSS : 0.0 to 4000Vrms

DC Accuracy
<(± 0.25% ± 0.5V) AC Accuracy <(± 0.5% ± 0.5V ± 0.01% per Hz above 100Hz) Input Impedance Nominally 100MΩ

RETURN Current Measurements

Current Range
0.0nA to 200mA (DC or ACrms)

DC Current Accuracy
<(± 0.25% ± 0.5nA) AC Current Accuracy <(± 0.5% ± 20nA ± 0.005% per Hz above 100Hz) Input Impedance 150uA : Nominally 37Ω Arc Current 1 to 30mArms (50KHz-5MHz bandwidth) <(± 10% ± 1mA) accuracy at 1MHz 4us, 10us, 15us, 20us, 30us or 40us measurement period Cable Compensation <(± 1% of error)

Test Timing

Test
0.02 to 9999sec or user terminated
<(± 0.05% ± 100ms) accuracy Delay 0.00 to 9999sec <(± 0.05% ± 100ms) accuracy

AC-30 Abbreviated Specifications

Loading Capability
10mArms (7mArms resistive) 250VA
Test Voltage Range
120 to 30000Vrms For line voltages below 115V linearly reduce the maximum test voltage by 1%/V
Test Voltage Accuracy
<(± 1.5% ± 5V ± (0.05% + 1V) per mArms load) Test Frequency Range 40.0Hz to 80.0Hz (0.1Hz Resolution) Dimensions 19” X 14¼” X 12½” (48¼ cm X 36 cm X 32 cm) Weight additional 36lb (17kg) net, 46lb (21kg) shipping