3CH CURRENT UNIT
U8977
Dedicated Current Input Module Capable of Supplying Power to Current Sensors
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Key Features • Achieve large current measurement with high accuracy • 3 channel input • Automatically recognize and scale simply by connecting the sensor • High speed sampling of 5 MS/s ensures high-speed phenomena are captured • High 16-bit A/D resolution • For Memory HiCorders MR6000 and MR8740T
Model No. (Order Code)
| U8977 | For the MR6000 and similar products |
|---|
Note: Use it by installing it in the Memory HiCorder. Current sensor is not included - please purchase separately.
Comparison Table
It is a comparison table against the current unit 8971. This table express es the difference of function between U8977 and 8971.
List of Available Memory HiCorders
Please refer to the table here for the types of input units that can be used for each Memory HiCorder.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
| Measurement functions | Number of channels: 3, Current measurement with optional current sensor |
|---|---|
| Input terminals | Dedicated connector terminal (ME 15 W) (Input resistance 1 MΩ, GND is common with the recorder main unit) |
| Applicable current sensor | (Direct connection): 9272-05, CT6841-05, CT6843-05, CT6844-05, CT6845-05, CT6846-05, CT6862-05, CT6863-05, 9709-05, CT6904, CT6865-05, CT6875, CT6876 (Connect using the optional conversion cable CT9920): CT7631, CT7636, CT7642, CT7731, CT7736, CT7742, CT7044, CT7045, CT7046 |
| Measurement range | • Directly connected current sensor: Automatic rating of adaptive current sensor When using 9272-05 (20 A), CT6841-05: 2 A to 100 A f.s., 6 ranges CT6862-05 : 4 A to 200 A f.s., 6 ranges When using 9272-05 (200 A), CT6843-05, CT6863-05: 20 A to 1000 A f.s., 6 ranges When using CT6844-05, CT6845-05, 9709-05, CT6904, CT6875: 40 A to 2000 A f.s., 6 ranges When using CT6846-05, CT6865-05, CT6876: 80 A to 4000 A f.s., 6 ranges • Current sensors connected via CT9920: Select conversion rate or model name When using CT7631, CT7731: 200 A, 1 range When using CT7636, CT7736: 200 A/400 A/1000 A, 3 ranges When using CT7642, CT7742: 2000 A/ 4000 A, 2 ranges When using CT7044, CT7045, CT7046: 2000 A/4000 A/10000 A, 3 ranges |
| Measurement resolution | 1/32000 of measurement range (using 16-bit A/D conversion) |
| Highest sampling rate | 5 MS/s (3 channel simultaneous sampling) |
| Measurement accuracy | ±0.3% f.s. (with 5 Hz filter, add accuracy and characteristics of the current sensor to be used) |
| Frequency characteristics | DC to 2 MHz ±3 dB |
| Input coupling | DC/GND |
| Low pass filter | 5/ 500/ 5 k/ 200 kHz |
| Dimensions and mass | 106 mm (4.17 in) W × 19.8 mm (0.78 in) H × 196.5 mm (7.74 in) D, 250 g (8.8 oz) |
| Accessories | None |
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Seminar Videos On Demand
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Seminar Schedule
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Catalogs
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User Guides
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Manuals
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ANALOG UNIT 8966, TEMP UNIT 8967, HIGH RESOLUTION UNIT 8968, STRAIN UNIT U8969, FREQ UNIT 8970, CURRENT UNIT 8971, DC/RMS UNIT 8972, LOGIC UNIT 8973, HIGH VOLTAGE UNIT U8974, 4CH ANALOG UNIT U8975, HIGH SPEED ANALOG UNIT U8976, 3CH CURRENT UNIT U8977, 4CH ANALOG UNIT U8978, CHARGE UNIT U8979, DIGITAL VOLTMETER UNIT MR8990, DIGITAL VOLTMETER UNIT U8991, ARBITRARY WAVEFORM GENERATOR UNIT U8793, WAVEFORM GENERATOR UNIT MR8790, PULSE GENERATOR UNIT MR8791, VIR GENERATOR UNIT U8794 [2MB] |
Instruction Manual |
Japanese English |
Ver.09 |
Outline Drawings
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3CH CURRENT UNIT U8977 [64KB] |
Ver.00 |
Technical Notes
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Declaration of Conformity
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Drivers, Firmware
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Others
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Options
Use with these products
* Main products are listed below. For more information, please see each product page.
MEMORY HiCORDER MR6000
• Max. 32ch Analog to 128ch Logic • Max. 200M-Sampling/s (16ch) • 1G-Word Memory (1ch)
High precision current measurement
Up to 200 A (High precision) *ME15W (12-pin) terminal type
* Direct connection with U8977
High precision current measurement
Up to 1000 A (High precision) *ME15W (12-pin) terminal type
* Direct connection with U8977
General purpose current measurement
Up to 6000 A (General purpose) *PL14 terminal type
* When connecting a general-purpose current sensor with PL14 terminal to the current unit U8977, conversion cable CT9920 is required separately
AC FLEXIBLE CURRENT SENSOR CT7040 series
• 10 Hz to 50 kHz, ±1.5% accuracy • 600A or 6000A AC rated
PL14 to ME15W (12 pin) terminal conversion
When connecting a general-purpose current sensor with PL14 terminal to the Current Unit U8977, Conversion Cable CT9920 is required separately.
CONVERSION CABLE CT9920
Required to connect the PW3390 or other instrument’s ME15W terminal to a current sensor with a PL14 output connector.
Precautions for connecting current sensors
• The total number of current sensors and current probes that can be connected to the Memory HiCorder main unit at the same time is nine in total. (Total connected to Current Unit U897, Current Unit 8971, Probe Power Supply Unit Z5021)
• The current units that can be connected to the Memory HiCorder main unit at the same time are three units of U8977 and four units of 8971.
• There is no limitation on the number of connections when measuring current using voltage input on an Analog Unit by combining current sensor / current probe with sensor power supply.
• Only the U8977 can use a sensor with PL14 terminal via the CT9920. Sensors with PL14 terminals cannot be used with the 8971.
Applications
Gallery
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