MR8740T_Quick guide_eng_20191016H.pdf - 第128页

122 Specications of the Options Model U8977 3CH Current Unit (The rmware of ver . 2.00 or later is required to install the module.) Conditions of guaranteed accuracy Specied under the following conditions: installed i…

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121
Specications of the Options
Temperature
characteristics
±0.02% f.s./°C
Effect of radiated
radio-frequency
electromagnetic eld
±5% f.s. (max.) at 3 V/m (with the lter set at 5 Hz)
Effect of conducted
radio-frequency
electromagnetic eld
±5% f.s. (max.) at 3 V (in the 10 V f.s. range, with the lter set at 5 Hz and 1 V DC
inputted)
Common-mode
rejection ratio
80 dB or more (at 50 Hz / 60 Hz, a signal source resistance of 100
Ω
)
Low-pass lter Off, 5 ±50%, 500 ±50%, 5 k ±50%, 200 k ±50% (Hz); −3 dB
5
Specications
122
Specications of the Options
Model U8977 3CH Current Unit (The rmware of ver. 2.00 or later is
required to install the module.)
Conditions of guaranteed accuracy
Specied under the following conditions: installed in a Memory HiCorder and operated at 23°C ±5°C (73°F ±9°F) and
80% RH or less after a half-hour (at least) warm-up and execution of zero-adjustment.
Operating
environment
Indoors, Pollution Degree 2, Operating altitude: up to 2000 m (6562 ft.)
Operating
temperature and
humidity
0°C to 40°C (32°F to 104°F), 80% RH or less (no condensation)
Storage temperature
and humidity
−10°C to 50°C (14°F to 122°F)
For −10°C or higher but lower than 40°C (14°F or higher but lower than 104°F), 80% RH
or less (no condensation)
For 40°C or higher but lower than 45°C (104°F or higher but lower than 113°F), 60% RH or
less (no condensation)
For 45°C to 50°C (113°F to 122°F), 50% RH or less (no condensation)
Standards Safety: EN61010
EMC: EN61326 Class A
Dimensions Approx. 106W × 19.8H × 196.5D mm (4.17″W × 0.78″H × 7.74″D)
Mass Approx. 250 g (8.8 oz.)
Product warranty
period
3 years
Options Model CT9900 Conversion Cable (PL23 receptacle–ME15W plug)
Model CT9920 Conversion Cable (PL14 receptacle–ME15W plug)
Number of input
channels
3 channels
123
Specications of the Options
Supported current
sensors
• Directly connectable current sensors
Model 9272-05 Clamp on Sensor (20 A/200 A AC)
Model CT6841-05 AC/DC Current Probe (20 A)
Model CT6843-05 AC/DC Current Probe (200 A)
Model CT6844-05 AC/DC Current Probe (500 A,
φ
20 mm)
Model CT6845-05 AC/DC Current Probe (500 A,
φ
50 mm)
Model CT6846-05 AC/DC Current Probe (1000 A)
Model CT6862-05 AC/DC Current Sensor (50 A)
Model CT6863-05 AC/DC Current Sensor (200 A)
Model 9709-05 AC/DC Current Sensor (500 A)
Model CT6904 AC/DC Current Sensor (500 A)
Model CT6865-05 AC/DC Current Sensor (1000 A)
Model CT6875 AC/DC Current Sensor (500 A)
Model CT6876 AC/DC Current Sensor (1000 A)
Model CT6877 AC/DC Current Sensor (2000 A)
• Current sensors that require Model CT9920 for connection
Model CT7631 AC/DC Current Sensor (100 A)
Model CT7636 AC/DC Current Sensor (600 A)
Model CT7642 AC/DC Current Sensor (2000 A)
Model CT7731 AC/DC Auto-Zero Current Sensor (100 A)
Model CT7736 AC/DC Auto-Zero Current Sensor (600 A)
Model CT7742 AC/DC Auto-Zero Current Sensor (2000 A)
Model CT7044 AC Flexible Current Sensor (6000 A,
φ
100 mm)
Model CT7045 AC Flexible Current Sensor (6000 A,
φ
180 mm)
Model CT7046 AC Flexible Current Sensor (6000 A,
φ
254 mm)
Measurement range • For the directly connectable current sensors, the instrument automatically recognizes the
rating of the current sensor.
2 A, 4 A, 10 A, 20 A, 40 A, 100 A (rating: 20 A)
4 A, 10 A, 20 A, 40 A, 100 A, 200 A (rating: 50 A)
20 A, 40 A, 100 A, 200 A, 400 A, 1000 A (rating: 200 A)
40 A, 100 A, 200 A, 400 A, 1000 A, 2000 A (rating: 500 A)
100 A, 200 A, 400 A, 1000 A, 2000 A, 4000 A (rating: 1000 A)
• For the current sensors that require Model CT9920 for connection, choose a conversion
rate or a model number.
200 A (Model CT7631, Model CT7731)
200 A, 400 A, 1000 A (Model CT7636, Model CT7736)
2000 A, 4000 A (Model CT7642, Model CT7742)
2000 A, 4000 A, 10000 A (Model CT7044, Model CT7045, Model CT7046)
2000 A, 4000 A, 10000 A, 20000 A, 40000 A, 100000 A (0.1 mV/A)
200 A, 400 A, 1000 A, 2000 A, 4000 A, 10000 A (1 mV/A)
20 A, 40 A, 100 A, 200 A, 400 A, 1000 A (10 mV/A)
2 A, 4 A, 10 A, 20 A, 40 A, 100 A (100 mV/A)
0.2 A, 0.4 A, 1 A, 2 A, 4 A, 10 A (1000 mV/A)
Frequency
characteristics
DC to 2 MHz (±3 dB)
Noise 10 mA p-p (max.) (using the 20 A sensor, with the 2 A f.s. range, with input terminals
connected with each other)
Low-pass lter Off, 5 Hz, 500 Hz, 5 kHz, 200 kHz ±50%; −3 dB
Input type Current sensor
Measurement
terminal
LR10-DC12BR (Hirose connector)
Input coupling DC/GND
5
Specications