Electrical Specifications

AC Current via Jaw

Range

374 and 375
376

600.0 A
999.9 A

Resolution

0.1 A

Accuracy

2% ± 5 digits (10-100 Hz)
2.5% ± 5 digits (100-500 Hz)

Crest Factor (50/60 Hz)

3 @ 500 A (375 and 376 only)
2.5 @ 600 A
1.42 @1000 A (376 only)
Add 2% for C.F. > 2

AC Current via Flexible Current Probe

Range

2500 A

Resolution

374 and 375

0.1 A (≤ 600 A)
1 A (≤ 2500 A)

376

0.1 A (≤ 999.9 A)
1 A (≤ 2500 A)

Accuracy

3% ±5 digits (5 – 500 Hz)

Crest Factor (50/60Hz)

3.0 at 1100 A (375 and 376 only)
2.5 at 1400 A
1.42 at 2500 A
Add 2% for C.F. > 2

Distance from Optimum

i2500-10 Flex

i2500-18 Flex

Error

A

0.5 in (12.7 mm)

1.4 in (35.6 mm)

± 0.5%

B

0.8 in (20.3 mm)

2.0 in (50.8 mm)

± 1.0%

C

1.4 in (35.6 mm)

2.5 in (63.5 mm)

± 2.0%

Measurement uncertainty assumes centralized primary conductor at optimum position, no external electrical or magnetic field, and within operating temperature range.

DC Current

Range

374 and 375
376

600.0 A
999.9 A

Resolution

0.1 A

Accuracy

2% ± 5 digits

AC Voltage

Range

374 and 375
376

600.0 V
1000 V

Resolution

374 and 375
376

0.1 V
0.1 V (≤ 600.0 V)
1 V (≤ 1000 V)

Accuracy

1.5% ± 5 digits (20 – 500 Hz)

DC Voltage

Range

374 and 375
376

600.0 V
1000 V

Resolution

374 and 375
376

0.1 V
0.1 V (≤ 600.0 V)
1 V (≤ 1000 V)

Accuracy

1% ± 5 digits

mV dc

Range

375 and 376

500.0 mV

Resolution

0.1 mV

Accuracy

1% ± 5 digits

Frequency via Jaw

Range

375 and 376

5.0 - 500.0 Hz

Resolution

0.1 Hz

Accuracy

0.5% ± 5 digits

Trigger Level

5 – 10 Hz, ≥10 A

10 – 100 Hz, ≥5 A

100 – 500 Hz, ≥10 A

Frequency via Flexible Current Probe

Range

375 and 376

5.0 - 500.0 Hz

Resolution

0.1 Hz

Accuracy

0.5% ± 5 digits

Trigger Level

5 – 20 Hz, ≥ 25 A

20 – 100 Hz, ≥ 20 A

100 – 500 Hz, ≥ 25 A

Resistance

Range

374
375 and 376

6000 Ω
60 kΩ

Resolution

374

0.1 Ω (≤ 600 Ω)
1 Ω (≤ 6000 Ω)

375 and 376

0.1 Ω (≤ 600 Ω)
1 Ω (≤ 6000 Ω)
10 Ω (≤ 60 kΩ)

Accuracy

1% ± 5 digits

Capacitance

Range

1000 μF

Resolution

0.1 μF (≤ 100 μF)
1 μ F (≤ 1000 μF)

Accuracy

1% ± 4 digits

Mechanical Specifications

Size (L x W x H)

246 mm x 83 m x 43 mm

Weight

388 g

Jaw Opening

34 mm

Flexible Current Probe Diameter

7.5 mm

Flexible Current Probe Cable Length
(head to electronics connector)

1.8 m

Environmental Specifications

Operating Temperature

10°C – +50°C

Storage Temp

-40°C – +60°C

Operating Humidity

Non condensing (< 10 –°C)
≤ 90% RH (at 10°C – 30°C)
≤ 75% RH (at 30°C – 40°C)
≤ 45% RH (at 40°C – 50°C)

Operating Altitude

3000 meters

Storage Altitude

12,000 meters

EMC

EN 61326-1:2006

Temperature Coefficients

Add 0.1 x specified accuracy for each
degree C above 28°C or below 18°C

Safety Specifications

Safety Compliance

CAN/CSA-C22.2 No. 61010-1-04
ANSI/UL 61010-1:2004
ANSI/ISA-61010-1 (82.02.01):2004
EN/IEC 61010-1:2001 to
1000V Measurement Category (CAT) III
600V Measurement Category (CAT) IV
Pollution Degree 2
EN/IEC 61010-2-032:2002
EN/IEC 61010-031:2002+A1:2008