DM1200UB-10V

**DM1200UB-10V** 

High precision fluxgate AC/DC current transducer for galvanically isolated measurement up to 1320 A 

## **Features** 

- 850 A rms nominal current 

- 10 V output at 1200 A through BNC connector 

- Ø45 mm aperture 

- 75 ppm total accuracy 

- 15 ppm linearity 

- 10 ppm offset 

- Status signal and LED 

**RoHS** 2011/65/EU v 

## **Description** 

High precision DC current transducer (DCCT) measuring up to 1320 A currents and continuously measuring 1200 A currents with a linearity error less than 15 ppm. 

Based on the ultra stable Danisense closed loop flux gate technology, the DM1200UB-10V has very low offset and ultra low drift. 

With an integrated voltage output module (VOM) outputting 10V at 1200 A, the DM1200UB-10V makes current measuring easy. 

It provides high resolution for precise monitoring, reliable and consistent performance, and a rugged, full aluminium design for durability. 

## **Applications** 

- Electric vehicle (EV) test bench 

- Power measurement and power analysis 

- Particle accelerators 

- MRI devices and medical scanners 

- Battery testing and evaluation systems 

- Current calibration purposes 

- Stable power supplies 

- Precision current sensing 

All information subject to change without notice 

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## **Electrical specifications at 23 °C,** Vs = _±_ **15 V supply voltage** 

|**Parameter**|**Symbol**<br>**Unit**|**Min**<br>**Typ.**<br>**Max**|**Comment**|
|---|---|---|---|
|Nominal primary AC current<br>Nominal primary DC current<br>Measuring range<br>Overload capacity<br>Nominal secondary voltage<br>Transfer ratio|IPN AC<br>Arms<br>IPN DC<br>A<br>IPM<br>A<br>IOL<br>A<br>VSN<br>V<br>k<br>A/V<br>Ro<br>Ω|850<br>-1200<br>1200<br>-1320<br>1320<br>1500<br>-10<br>10<br>120<br>120<br>0|Refer toFig. 2for derating<br>Refer toFig. 2for derating<br>Refer toFig. 2for derating<br>Non-measured 100ms<br>At nominal primary DC current<br>Iprimary/Vsecondary<br>At DC|
|Output resistance|Ro|||
|Linearity error|_ϵ_L<br>ppm|-15<br>7<br>15|ppm refers to reading|
|Ratio error<br>Ratio temperature coeffcient<br>Ratio stability|ppm<br>ppm/K<br>ppm/month|-50<br>50<br>-3<br>_±_1<br>3<br>-10<br>10|ppm refers to reading<br>ppm refers to reading<br>ppm refers to reading|
|Offset (including earth feld)<br>Offset temperature coeffcient<br>Offset stability over time|ppm<br>ppm/K<br>ppm/month|-10<br>_±_3<br>10<br>-0.2<br>0.2<br>-0.2<br>0.2|ppm refers to IPN DC<br>ppm refers to IPN DC<br>ppm refers to IPN DC|
|Bandwidth<br>Response time to a step current IPN|f(_±_3dB)<br>kHz<br>tr<br>µs|300<br>1|Small signal. SeeFig. 3<br>To 90% of step current|
|Total accuracy without offset<br><10 Hz<br><100 Hz<br><1 kHz<br><10 kHz<br><100 kHz<br><300 kHz|_ϵ_tot|_% of reading + % of full scale_<br>0.0065 + 0.00005<br>0.0065 + 0.0001<br>0.02 + 0.0002<br>0.2 + 0.0005<br>5 + 0.003<br>30 + 0.006|Full scale refers to IPN DC.<br>For details, seeReading and full<br>scale<br>For other frequencies, seeLinear<br>interpolation of accuracy<br>specifcation.|
|Phase shift<br><10 Hz<br><100 Hz<br><1 kHz<br><10 kHz<br><100 kHz||0.01°<br>0.01°<br>0.04°<br>0.3°<br>4°||
|RMS noise<br><10 Hz<br><100 Hz<br><1 kHz<br><10 kHz<br><100 kHz|ppm rms|0.05<br>0.1<br>0.08<br>0.15<br>0.25<br>0.35<br>0.8<br>1<br>5.5<br>6|ppm refers to IPN DC|
|Peak-to-peak noise<br><10 Hz<br><100 Hz<br><1 kHz<br><10 kHz<br><100 kHz|ppm p-p|0.5<br>1<br>2<br>5<br>30|ppm refers to IPN DC|
|Fluxgate excitation frequency<br>Power supply voltages<br>Idle current consumption<br>Current consumption at nominal current<br>Current consumption at max current|fexc<br>kHz<br>V<br>mA<br>mA<br>mA|31.25<br>_±_14.25<br>_±_15.75<br>_±_140<br>-950<br>950<br>-1030<br>1030|Primary current = 0 A<br>At IPN DC<br>At IPM|
|Offset change with external magnetic feld<br>Offset change with power supply voltage changes|ppm/mT<br>ppm/V|2<br>-0.2<br>0.2|ppm refers to nominal current<br>ppm refers to nominal current|



1 ppm nominal = 10 _µ_ V secondary voltage. 

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**DM1200UB-10V** 

## **Linearity error** 

Linearity error is defined as the deviation from a straight line. The straight line is a linear regression trend line based on the least squares method of the measurement points from 0 to positive max current and another trendline is calculated from 0 to negative max current. The difference between each measured point and the linear trend line is the linearity error. The linearity error _ϵ_ L can be expressed as (1), where Ireading is the measurement result and Ifitted is the regression value. 

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**----- Start of picture text -----**<br>
0<br>Measurement<br>Trendline<br>0<br>Reference Reference<br>Reading<br>Linearity error<br>**----- End of picture text -----**<br>


Figure 1: Linearity error definition 

## **Reading and full scale** 

Reading is the actual value measured at a given time. Full scale is the rated nominal value of the device. If a given current Ireading is measured, the total accuracy is calculated as (2). Example: A 500 A rated device has a specification of 0.005% + 0.0015% (reading + full scale) at < 10 Hz, plus an offset of 0.001 % (of full scale). The device is measuring (reading) 10 A dc, and the accuracy is calculated as (3). 

_ϵ_ tot = _ϵ_ reading _·_ Ireading + ( _ϵ_ fullscale + _ϵ_ offset) _·_ IPNDC (2) _ϵ_ tot = 0.005% _·_ 10A + (0.0015% + 0.001%) _·_ 500A = 13mA (3) 

## **Primary and secondary current/voltage** 

The secondary current IS or voltage VS is calculated by using the transfer ratio k, as in (4). 

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If the accuracy at a specific frequency is required, it is possible to use linear interpolation between known points. If the frequency f is f1 < f < f2 and the accuracy at the frequency _ϵ_ (f) is _ϵ_ (f1) < _ϵ_ (f) < _ϵ_ (f2), then the accuracy at f is found as (8). 

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1000<br>100<br>10 25 °<br>45 °<br>65 °<br>1<br>10 Hz 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz<br>Frequency<br>Primary current (Arms)<br>**----- End of picture text -----**<br>


Figure 2: Maximum continuous primary current vs. frequency 

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30 30°<br>20 20°<br>10 10°<br>0 0°<br>-10 -10°<br>Gain<br>-20 -20°<br>Phase<br>-30 -30°<br>10 Hz 100 Hz 1 kHz 10 kHz 100 kHz<br>Frequency<br>Phase<br>Magnitude (% )<br>**----- End of picture text -----**<br>


Figure 3: Frequency characteristics 

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**DM1200UB-10V** 

## **Isolation specifications according to IEC 61010-1** 

- When using _REINFORCED insulated_ wire, all wiring must be insulated for the highest voltage used. When using _BASIC insulated_ or _uninsulated_ wire, follow the specified voltages in the table below: 

|**Parameter**|**Parameter**|**Unit**|**Value**|
|---|---|---|---|
|Clearance<br>Creepage distance<br>||mm<br>mm<br>|12<br>12<br>|
|Comparative tracking index (CTI)||V|> 600|
|Continuous working voltage according to IEC 61010-1 with:<br>_Uninsulated_wire:<br>Non mains<br>CAT II (dc and rms)<br>CAT III (dc and rms)<br>_BASIC insulated_wire:<br>Non mains<br>CAT II (dc and rms)<br>CAT III (dc and rms)||V|1000<br>1000<br>600<br>2000<br>1000<br>1000|
|Transient voltage according to IEC 61010-1 with:<br>_Uninsulated_wire:<br>Non mains<br>CAT II<br>CAT III<br>_BASIC insulated_wire:<br>Non mains<br>CAT II<br>CAT III||V|5000<br>9500<br>9500<br>8500<br>6000<br>8000|



- Do not connect the transducer to signals or use for measurements within Measurement Category IV, or for measurements on MAINs circuits or on circuits derived from Overvoltage Category IV which may have transient overvoltages above what the product can withstand. The product must not be connected to circuits that have a maximum voltage above the continuous working voltage, relative to earth or to other channels, or this could damage and defeat the insulation. 

## **Environmental and mechanical characteristics** 

|**Parameter**|**Unit**|**Min**|**Typ**|**Max**|**Comment**|
|---|---|---|---|---|---|
|Altitude<br>Usage<br>Pollution degree<br>Operating temperature range<br>Storage temperature range<br>Relative humidity<br>Mass|m<br>°C<br>°C<br>%<br>kg|-40<br>-40<br>20|2|2000<br>2<br>65<br>65<br>80|Designed for indoor use<br>Non-condensing|



Connections: D-sub-9 power supply and BNC voltage reading Standards: EN 61326-1:2013-2021 IEC 61010-2-030:2021/A11:2021 and IEC 61010-1:2010/A1:2019 External devices: External devices connected to current transducers must comply with the standards IEC61010-1 and IEC62368-1 and be energy-limited circuitry 

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Cleaning: The transducer should only be cleaned with a damp cloth. No detergent or chemicals should be used. Temperature: When multiple primary turns are used or high primary currents are applied the temperature around the transducer will increase, please monitor to ensure that the maximum ratings are not exceeded. It is recommended to have minimum 1 mm[2] per ampere in the primary bus bar. 

## **Intended use** 

The DM1200UB-10V is designed to measure current up to 1320 A, and be powered by a DSSIU-4-1U or DSSIU-6-1U or similar power supplies. 

Please see the product manual: https://danisense.com/user-manual. 

## **Instruction for use** 

- Please follow the polarity of the voltage supply to avoid damaging the device. See Fig. 4. 

1. Do not power up the device before all cables are connected. 

2. Place the primary conductor through the aperture of the transducer. 

3. Connect a D-sub-9 cable between DSSIU-4/6-1U and each sensor. 

4. When all connection are secured - connect mains power. 

5. Apply primary current and measure the output voltage on the BNC connector. 

� There is a risk of electrical shock if an uninsulated busbar with high voltages is touching the metal en- closure of the transducer. Please ensure, before powering up the system, that no uninsulated wire can touch the metal enclosure. 

## **Pin out description** 

- 1 DO NOT USE Must not be connected 

- 2 NC No connection 

- 3 StatusStatus signal negative terminal 4 0 V 0 V connection for supply voltage 5 VsNegative supply voltage 

- 6 DO NOT USE Must not be connected 7 NC No connection 8 Status+ Status signal positive terminal 9 Vs+ Positive supply voltage 

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1 DO NOT USE<br>DO NOT USE 6<br>2 NC<br>NC 7<br>3 Status-<br>Status+ 8<br>4 0 V<br>Vs+ 9<br>5 Vs-<br>**----- End of picture text -----**<br>


Figure 4: D-sub-9 connection pinout 

� Do not disassemble the unit. If the green status LED is not operating with all cables connected and the system powered up, disconnect power and contact Danisense for further instruction. If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. 

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**----- Start of picture text -----**<br>
5,5<br> 178,6<br>Positive current direction<br> 146  Positive current direc<br> 2,5<br> 116<br>5,5<br> 50   57,1<br> 165   65<br>45<br> 53<br> 29   37<br> 11<br> 7,5<br> 146,5   174<br> 101<br> 31<br> 20   12,8   3<br>**----- End of picture text -----**<br>


Figure 5: Dimensions of sensor head. Tolerance is 0.3 mm 

## **Mounting instructions** 

Base plate: 4 (5.5 x 7.5) mm slotted holes, 6 Nm Back side: 4 (5.5 x 7.5) mm slotted holes, 6 Nm 

## **Positive current direction** 

Is identified by an arrow on the back side isolation plastic insert. 

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Ro<br>+<br>– V BNC<br>Chassis<br>**----- End of picture text -----**<br>


Figure 6: BNC shield and chassis connection 

## **Status signal and LED** 

When the sensor is operating in normal condition the status pins (Status+ and Status-) are shorted by an optocoupler and the green status LED is ON, see Fig. 7. When a fault is detected, or the power is off, the status pins are opened and the green status LED is OFF. Status signal optocoupler ratings found below: 

Forward direction: Status+ to Status- (Pin 8 to pin 3) Maximum forward current: 10 mA Maximum forward voltage: 60 V Maximum reverse voltage: 5 V 

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Status+<br>Status-<br>**----- End of picture text -----**<br>


Figure 7: Status signal optocoupler 

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## **Declaration of Conformity** 

Danisense A/S Malervej 10 DK-2630 Taastrup Denmark 

Declares that under our sole responsibility that this product is in conformity with the provisions of the following EC Directives, including all amendments, and with national legislation implementing these directives: 

Directive 2014/30/EU 

Directive 2014/35/EU 

And that the following harmonized standards have been applied 

EEN 61010-1 (Third Edition):2010, EN 61010-1:2010/A1:2019 EN 61010-2-030:2021/A11:2021 EN 61326-1:2013 

All DANISENSE products are manufactured in accordance with RoHS directive 2011/65/EU. Annex II of the RoHS directive was amended by directive 2015/863 in force since 2015, expanding the list of 6 restricted substances (Lead, Hexavalent Chromium, PBB, PBDE and Cadmium) 

Danisense follows the provision in EN 63000:2018 

Place Taastrup, Denmark 

Date Henrik Elbæk 2022-03-15 

All information subject to change without notice 

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