**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.

Test Voltage |
C < 0.01uF |
C = 0.01uF to 1uF |
C = 1uF to 5uF |

951i, 952i or 956i |
|||

50V | 10K-30GΩ : ±0.8%±(R/1GΩ)% | 10K-20GΩ : ±0.8%±(R/600MΩ)% | 10K-10GΩ : ±0.8%±(R/400MΩ)% |

100V | 10K-60GΩ : ±0.7%±(R/2GΩ)% | 10K-30GΩ : ±0.7%±(R/1GΩ)% | 10K-20GΩ : ±0.7%±(R/600MΩ)% |

250V | 10K-150GΩ : ±0.6%±(R/5GΩ)% | 10K-60GΩ : ±0.6%±(R/1.5GΩ)% | 10K-30GΩ : ±0.6%±(R/1GΩ)% |

500V | 10K-300GΩ : ±0.6%±(R/10GΩ)% | 10K-80GΩ : ±0.6%±(R/2.5GΩ)% | 10K-40GΩ : ±0.6%±(R/1GΩ)% |

1000V | 20K-600GΩ : ±0.6%±(R/20GΩ)% | 20K-100GΩ : ±0.6%±(R/3GΩ)% | 20K-50GΩ : ±0.6%±(R/1.5GΩ)% |

2500V | 50K-1.5TΩ : ±0.6%±(R/50GΩ)% | 50K-100GΩ : ±0.6%±(R/3GΩ)% | 50K-50GΩ : ±0.6%±(R/1.5GΩ)% |

5000V | 100K-3TΩ : ±0.6%±(R/100GΩ)% | 100K-100GΩ : ±0.6%±(R/3GΩ)% | 100K-50GΩ : ±0.6%±(R/1.5GΩ)% |

953i, 954i or 955i |
|||

50V | 10K-30GΩ : ±0.8%±(R/1GΩ)% | 10K-15GΩ : ±0.8%±(R/500MΩ)% | 10K-10GΩ : ±0.8%±(R/300MΩ)% |

100V | 10K-60GΩ : ±0.7%±(R/2GΩ)% | 10K-25GΩ : ±0.7%±(R/800MΩ)% | 10K-15GΩ : ±0.7%±(R/500MΩ)% |

250V | 10K-150GΩ : ±0.6%±(R/5GΩ)% | 10K-40GΩ : ±0.6%±(R/1.3GΩ)% | 10K-25GΩ : ±0.6%±(R/750MΩ)% |

500V | 17K-300GΩ : ±0.6%±(R/10GΩ)% | 17K-60GΩ : ±0.6%±(R/1.75GΩ)% | 17K-30GΩ : ±0.6%±(R/900MΩ)% |

1000V | 34K-600GΩ : ±0.6%±(R/20GΩ)% | 34K-75GΩ : ±0.6%±(R/2GΩ)% | 34K-35GΩ : ±0.6%±(R/1GΩ)% |

2500V | 84K-1.5TΩ : ±0.6%±(R/50GΩ)% | 84K-80GΩ : ±0.6%±(R/2.5GΩ)% | 84K-40GΩ : ±0.6%±(R/1GΩ)% |

5000V | 167K-3TΩ : ±0.6%±(R/100GΩ)% | 167K-90GΩ : ±0.6%±(R/2.5GΩ)% | 167K-40GΩ : ±0.6%±(R/1GΩ)% |

10000V | 1.34M-6TΩ : ±0.6%±(R/200GΩ)% | 1.34M-90GΩ : ±0.6%±(R/2.5GΩ)% | 1.34M-40GΩ : ±0.6%±(R/1GΩ)% |

957i |
|||

100V | 10K-60GΩ : ±1.2%±(R/2GΩ)% | 10K-20GΩ : ±1.2%±(R/500MΩ)% | 10K-10GΩ : ±1.2%±(R/300MΩ)% |

250V | 25K-150GΩ : ±1.1%±(R/5GΩ)% | 25K-30GΩ : ±1.1%±(R/1GΩ)% | 25K-15GΩ : ±1.1%±(R/500MΩ)% |

500V | 50K-300GΩ : ±1.1%±(R/10GΩ)% | 50K-40GΩ : ±1.1%±(R/1.3GΩ)% | 50K-20GΩ : ±1.1%±(R/650MΩ)% |

1000V | 100K-600GΩ : ±1.1%±(R/20GΩ)% | 100K-50GΩ : ±1.1%±(R/1.5GΩ)% | 100K-25GΩ : ±1.1%±(R/700MΩ)% |

2500V | 250K-1.5TΩ : ±1.1%±(R/50GΩ)% | 250K-60GΩ : ±1.1%±(R/1.75GΩ)% | 250K-25GΩ : ±1.1%±(R/800MΩ)% |

5000V | 500K-3TΩ : ±1.1%±(R/100GΩ)% | 500K-60GΩ : ±1.1%±(R/1.8GΩ)% | 500K-25GΩ : ±1.1%±(R/800MΩ)% |

10000V | 1M-6TΩ : ±1.1%±(R/200GΩ)% | 1M-60GΩ : ±1.1%±(R/1.8GΩ)% | 1M-25GΩ : ±1.1%±(R/800MΩ)% |

15000V | 3M-10TΩ : ±1.6%±(R/300GΩ)% | 3M-60GΩ : ±1.6%±(R/1.8GΩ)% | 3M-25GΩ : ±1.6%±(R/800MΩ)% |

**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 Voltage |
C < 0.01uF |
C = 0.01uF to 1uF |
C = 1uF to 5uF |

50V | 10K-300MΩ : ±1.5%±(R/10MΩ)% | 10K-300MΩ : ±1.5%±(R/10MΩ)% | 10K-300MΩ : ±1.5%±(R/10MΩ)% |

100V | 10K-600MΩ : ±1.4%±(R/20MΩ)% | 10K-600MΩ : ±1.4%±(R/19MΩ)% | 10K-600MΩ : ±1.4%±(R/18MΩ)% |

250V | 10K-1.5GΩ : ±1.3%±(R/45MΩ)% | 10K-1.5GΩ : ±1.3%±(R/45MΩ)% | 10K-1.4GΩ : ±1.3%±(R/40MΩ)% |

500V | 10K-3GΩ : ±1.3%±(R/90MΩ)% | 10K-2.75GΩ : ±1.3%±(R/80MΩ)% | 10K-2.6GΩ : ±0.6%±(R/80MΩ)% |

1000V | 20K-5GΩ : ±1.3%±(R/160MΩ)% | 20K-5GΩ : ±1.3%±(R/150MΩ)% | 20K-4.5GΩ : ±1.3%±(R/130MΩ)% |

2500V | 50K-11GΩ : ±1.3%±(R/300MΩ)% | 50K-9GΩ : ±1.3%±(R/250MΩ)% | 50K-8GΩ : ±1.3%±(R/240MΩ)% |

4000V | 80K-14.5GΩ : ±1.3%±(R/400MΩ)% | 80K-12GΩ : ±1.3%±(R/350MΩ)% | 80K-9.5GΩ : ±1.3%±(R/280MΩ)% |

**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