Page 19 - HIOKI 2017 Field Measuring Instruments

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■ Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year) Clamp meters

*Representative figures are provided for basic accuracy. For more detailed information, please refer to the individual product catalogs.

Model 3287 3288 3288-20 3284 3285 CM4371, CM4372 CM4373, CM4374

AC measurement system True RMS MEAN Value True RMS True RMS True RMS

Display refresh rate 2.5 times/s 4 times/s (FAST), 2 times/s (NORMAL), 5 times/s (excluding electrostatic capacity, frequency, and
1 time/3s (SLOW) temperature)
Backlight N/A N/A
Core jaw diameter φ 35 mm (1.38 in) 4
Safety standard category V : CAT III 300 V, A : CAT III 600 V φ33mm (1.30 in) φ 55 mm (2.17 in)
Max. rated voltage to earth CAT III 600 V φ33mm (1.30 in) φ 55 mm (2.17 in)
600 Vrms 600 Vrms
CAT IV 600 V, CAT III 1000 V

1000 Vrms

2.5 or less 3 or less 2.5 or less 2.5 or less [20.00 A range] 7.5 [600.0 A range] 500.0 A or less: 3; greater than
(150 A, 100 V (2 at 1000 A (1.5 at 200 A, 1.7 at (1.42 at 2000 A, 1.7
Crest factor N/A range, 1.5 at [600.0 A range] 500.0 A or less: 500.0 A and less than or equal to 600.0 A: 2.5
max.) 600 V) at 600 V)
Voltage) 3; greater than 500.0 A and less [2000 A range] 1000 A or less: 2.84; greater than

than or equal to 600.0 A: 2.5 1000 A and less than or equal to 2000 A: 1.42

DC current 10.00/ 100.0 A 100.0/ 1000 A 20.00/ 200.0 A 200.0/ 2000 A 20.00/ 600.0 A 600.0/ 2000 A
(5% of range or more) (5% of range or more)

Basic accuracy ±1.5 %rdg.± 5 dgt. ±1.3 %rdg.± 3 dgt. ±1.3 %rdg.± 3 dgt.

AC current 10.00/ 100.0 A 100.0/ 1000 A 20.00/ 200.0 A 200.0/ 2000 A 20.00/ 600.0 A 600.0/ 2000 A
(Frequency characteristics) (10 Hz to 1 kHz) (10 to 500 Hz) (10 Hz to 2 kHz) (10 Hz to 1 kHz) (10 Hz to 1 kHz) (10 Hz to 1 kHz)

Basic accuracy 45-66 Hz: ±1.5 %rdg.± 5 dgt. 45-66 Hz: ±1.3 %rdg.± 3 dgt. 45-66 Hz: ±1.3 %rdg.± 3 dgt.

DC voltage 420.0 m/ 4.200/ 42.00/ 420.0/ 600 V 30.00/ 300.0/ 600 V 600.0 m/ 6.000/ 60.00/ 600.0/ 1500 V (Display up to 1700 V)

Basic accuracy ±1.3 %rdg.± 4 dgt. ±1.0 %rdg.± 3 dgt. ±0.5 %rdg.± 3 dgt.

AC voltage 4.200/ 42.00/ 420.0/ 600 V 30.00/ 300.0/ 600 V 6.000/ 60.00/ 600.0/ 1000 V
(Frequency characteristics) (30 to 500 Hz) (10 Hz to 1 kHz) (15 Hz to 1 kHz)

Basic accuracy 30-500 Hz: ±2.3 %rdg.± 8 dgt. 45-66 Hz: ±1.0 %rdg.± 3 dgt. 45-66 Hz: ±0.9 %rdg.± 3 dgt.

DC+AC Current N/A 20.00/ 200.0 A 200.0/ 2000 A 20.00/ 600.0 A 600.0/ 2000 A
(Frequency characteristics) (DC, 10 Hz to 2 kHz) (DC, 10 Hz to 1 kHz) (DC, 10 Hz to 1 kHz) (DC, 10 Hz to 1 kHz)

Basic accuracy -- DC, 45-66 Hz: ±1.3 %rdg.± 13 dgt. DC, 45-66 Hz: ±1.3 %rdg.± 13 dgt.
DC+AC Voltage N/A 30.00/ 300.0/ 600 V 6.000/ 60.00/ 600.0/ 1000 V
(Frequency characteristics) (DC, 10 Hz to 1 kHz) (DC, 10 Hz to 1 kHz)

Basic accuracy -- DC, 45-66 Hz: ±1.0 %rdg.± 7 dgt. DC, 45-66 Hz: ±1.0 %rdg.± 7 dgt.
DC Power
Basic accuracy N/A N/A 0.0 VA to 1020 kVA 0.000 kVA to 3400 kVA

-- -- ±2.0 %rdg.± 20 dgt.

Resistance 420.0/ 4.200 k/ 42.00 k/ 420.0 k/ 4.200 M/ 42.00 MΩ N/A 600.0 Ω/ 6.000 k/ 60.00 k/ 600.0 kΩ

Basic accuracy ±2.0 %rdg.± 4 dgt. -- ±0.7 %rdg.± 5 dgt.

Temperature (K) N/A N/A -40.0 ˚C to 400.0 ˚C

Basic accuracy -- -- Add temperature probe accuracy to basic accuracy of ±0.5% rdg. ±3.0 ˚C

Electrostatic capacity N/A N/A 1.000/ 10.00/ 100.0/ 1000μF

Basic accuracy -- -- ±1.9 %rdg.± 5 dgt.

Frequency N/A 10/ 100/ 1000 Hz 9.999/ 99.99/ 999.9 Hz
Basic accuracy -- ±0.3 %rdg.± 1 dgt. ±0.1 %rdg.± 1 dgt.

Continuity check 4 N/A 4

(beep sound) Less than 50 Ω ±40 Ω -- Less than 25 Ω ±10 Ω, red LED

Diode check N/A N/A 4

AC voltage detection N/A N/A 4

Functions Auto power save, Data hold Output (monitor, analog), AC+DC mode, Automatic AC/DC detection, Plus/Minus judgement function of DC
Maximum/ Minimum/ Average value record A, DC V, Max/Min/Average/PEAK MAX/ PEAK MIN value display,
function, Data hold, Peak hold, Auto power off Filter function, Display value hold, Auto hold, Back light, Auto-power
save, Buzzer sounds , Zero-adjustment, Bluetooth® (CM4372, CM4374)

Dustproof and N/A IP40 (EN60529) Grip: IP54 (when measuring an insulated conductor only)
waterproof
Note: Risk of electric shock from measured conductors increases when wet.

Power supply Coin type lithium battery CR2032×1 Stacked manganese battery 6F22×1 LR03 Alkaline battery ×2
or AC adapter 9445-02/-03 (option)

Continuous operating time 25 hours 60 hours 35 hours 25 hours CM4371, CM4373: 45 hours/ CM4372, CM4374: 25 hours

Dimensions and mass 57 mm (2.24 in) W × 180 mm (7.09 in) H × 16 mm (0.63 in) D 62 mm (2.44 in) W × 230 62 mm (2.44 in) W × 260 65 mm (2.56 in) W × 215 mm 65 mm (2.56 in) W×250 mm
3287: 170g (6.0 oz), 3288/-20: 150 g (5.3 oz) mm (9.05 in) H × 39 mm mm (10.24 in) H × 39 mm (8.46 in) H ×35 mm (1.38 in) (9.84 in) H×35 mm (1.38 in) D
(1.54 in) D, 460 g (16.2 oz) (1.54 in) D, 540 g (19.0 oz) D mm, 340 g (12.0 oz) mm, 530 g (18.7 oz)

CLAMP ON AC/DC HiTESTER 3284, 3285 Output function for improved analytical capability

OUTPUT CORD L9095 (BNC) • Analog output for current level, current waveform, or frequency level
• Peak hold function displays the crest value of the inrush current

occurring when electrical equipment is started

AC/DC AC/DC 1000Hz
600V Current Frequency

MEMORY HiCORDER Order Code: 3284 (True RMS, 200 A AC/DC, Not CE marked)
Combine the external output function 3285 (True RMS, 2000 A AC/DC, Not CE marked)
with a Memory HiCorder to record
3284 fluctuations in current and frequency Accessories Options
or instantaneous waveforms. TEST LEAD L9207-10 OUTPUT CORD L9094 (Connect to
φ33mm 90 cm (2.95 ft) length Banana terminal, 1.5 m (4.92 ft) length)
3285
True RMS CARRYING CASE OUTPUT CORD L9095 (Connect to
200A φ55mm 9399 (3284 only) BNC terminal, 1.5 m (4.92 ft) length)
CARRYING CASE
True RMS 9345 (3285 only) OUTPUT CORD L9096 (Connect to
2000A Hand strap terminal block, 1.5 m (4.92 ft) length)
Instruction manual
Stacked manganese battery AC ADAPTER 9445-02 For USA, 9V/ 1A
AC ADAPTER 9445-03 For EU, 9V/ 1A