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Scope of supply - basic device

Number

Designation

1

MRG 512-PRO PQ Flex 

1

Supplementary description MRG 512-PRO PQ 

1

Operation manual UMG 512-PRO 

1

Carry case

1

Mains connection cable

4

Voltage pickoffs with fuses, black (gripping probes) 

1

Voltage pickoff with fuse, blue (gripping probe) 

1

Voltage measurement set (brown, black, grey, red, blue)

4

Rogowski coil with connection cable and plug (

ø 

190 mm, L 600 mm)

1

Cross patch cable, CAT 5e

2

Connection cable with plug for residual current measurement, 3 m
(Residual current transformer not included in the scope of deliverables)

Concerning this operation manual

This description and the operating instructions for 
the device are part of the product.

•  Read this description and the operation manual 

through prior to using the device.

•  Keep this description and the operation manual 

throughout the complete service life of the 
product and have them readily available for 
reference.

•  Pass this description and the operation manual 

on to each subsequent owner or user of the 
product.

•  In the event of questions that are not covered 

by this operation manual for the UMG 512-
PRO, please contact the support department 
of Janitza electronics GmbH (Tel. no. +49 6441-
9642-22).

This device must only be operated and repaired 
by specialised personnel.

Connecting the measurement case

1. 

Connect the mains cable to the measurement 
case 

(1)

 and connect to 230 V / 50 Hz. Switch 

on the measurement case via the on/off switch 

(2)

. The "Mains OK" 

(3) 

and "Batt. OK" 

(4) 

LEDs 

illuminate. 

2. 

Carry out basic settings on the UMG 512-PRO 

(5)

, e.g.

-   Voltage transformer / current transformer 

settings

-  Recording configuration or 
-   RCM  measurement 

(the transformer for RCM measurement is not 
included in the scope of deliverables). 
The settings can be implemented via the 
accompanying GridVis software or directly on 
the UMG 512-PRO (see the accompanying 
instructions for the UMG 512-PRO for this).  

3. 

Set up the measurement transformer 

(6)

 - see 

"Measurement transformer configuration" 
chapter.

4. 

Connect measured voltage with the voltage 
tap-offs via the voltage inputs 

(7)

 or with the 

measurement lines included in the scope of 
deliverables. In doing so, observe the applicable 
safety regulations. 

5. 

Connect current transformer coils (operating 
current 

(8) 

or residual current 

(9)

) with the 

measurement case via the screw terminals. 

6. 

Connect the current transformer coils to the 
consumer to be measured.  

7. 

Measurement starts 

8. 

After measurement is complete, switch the 
device off 

(2)

, disconnect from the object being 

measured and disconnect from the mains!

- 4 -

Summary of Contents for MRG 512-PRO PQ Flex

Page 1: ...H Vor dem Polst ck 6 D 35633 Lahnau Support tel 49 6441 9642 22 Fax 49 6441 9642 30 E mail info janitza com Internet http www janitza com www janitza com Mobile universal measurement device MRG 512 PR...

Page 2: ...sic device 4 Connecting the measurement case 4 Reading out recordings 5 MRG 512 PRO PQ Flex views 5 Measurement transformer settings 6 Example connection voltage measurement 7 Example connection curre...

Page 3: ...Do not work with the device if the front plate has been removed Otherwise you may come into contact with hazardous voltages It is not permitted to use the device with the front plate removed The UMG 5...

Page 4: ...ectronics GmbH Tel no 49 6441 9642 22 This device must only be operated and repaired by specialised personnel Connecting the measurement case 1 Connect the mains cable to the measurement case 1 and co...

Page 5: ...rement 2 Net Ok Batt Ok I O Differenzstrommess I 5 I 6 Eth AUX UMG 512 PRO Netz Ok Batt Ok I O Residual current transformer I 5 I 6 Ether AUX U L1 U L2 U L3 U L4 U N L4 L1 L2 L3 N Spannungseing nge Di...

Page 6: ...A 6 630 A 5 1000 A 4 1500 A 3 2000 A 2 4000 A 1 Setting Rogowski coil 600 mm Flex CT 1A 600 mm Set the current measurement range with the DIP switch 2 in accordance with the table Potentiometer 1 DIP...

Page 7: ...h fuse Max 20mm Locking sleeve with bayonet catch for accommodating a fuse Example connection current measurement N L1 L2 L3 PE I1 I2 I3 IN I5 I6 Voltage measurement terms connections Rogowski coil RC...

Page 8: ...e signs when drawing energy Also check the power factor for plausibility Turn the current transformer if necessary Up to 2 residual current measurements can be selected c Attention Fatal hazard due to...

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