RC48N

The RC48N ground-fault neutral-grounding monitor is used to monitor high-resistance grounded installations. The maximum ground fault current in these systems is limited by a neutral grounding resistor to 5 A, 15 A or 25 A .

The RC48N ground-fault neutral-grounding monitor combines three functions in one device:

  1. Monitoring of the residual current in the grounding conductor.
  2. Voltage monitoring between the transformer neutral and ground.
  3. Monitoring of the grounding resistor for continuity (NGR).

If a value is not within the thresholds, a relay with two voltage-free changeover contacts will be activated.

Questions? Contact us!

RC48N
RC48N

The RC48N ground-fault neutral-grounding monitor is used to monitor high-resistance grounded installations. The maximum ground fault current in these systems is limited by a neutral grounding resistor to 5 A, 15 A or 25 A .

The RC48N ground-fault neutral-grounding monitor combines three functions in one device:

  1. Monitoring of the residual current in the grounding conductor.
  2. Voltage monitoring between the transformer neutral and ground.
  3. Monitoring of the grounding resistor for continuity (NGR).

If a value is not within the thresholds, a relay with two voltage-free changeover contacts will be activated.

Questions? Contact us!

Features

  • Ground-fault monitor for high-resistance grounded installations with a limited fault current of 5 - 25 A
  • Three-in-one functionality: Residual current, voltage and grounding resistor continuity
  • Measures the residual current by means of a Bender residual current transformer
  • Alarm easily recognizable by LED lights
  • Alarm relay with adjustable trip time
  • Measures resistance value and voltage drop of the NGR via coupling devices
  • Alarm easily recognizable by LED lights
  • The alarm relay can be used for the tripping of a load switch
  • Depending on the type of load switch the operating mode of the alarm relay can be set to N/O operation or N/C operation

Applications

  • High-resistance grounded installations with a limited fault current of 5…25 A
  • Mining applications

RC48N Variant(s)

Basic deviceSupply voltage/
frequency range US
Power consumptionArt. No.
RC48N-935AC/DC 60…264 V
50…60 Hz
approx. 5.8 VA at AC 60 V
approx. 8.5 VA at AC 264 V
B94013005

Optional Accessories for RC48N

Type designationArt.-No.
Remote alarm indicator and operator panelB94071001
Type designationArt.-No.
CD1000 Coupling device, AC 0…1000 VB98039010
CD5000 Coupling device, AC 0…5000 VB98039011
Residual current transformer, 70 mmB911777
Residual current transformer, 105 mmB911778

Downloads for RC48N

NameCategorySizeLanguageTimestampD-/B-Number
RC48 CE Declarations of conformity 84.0 KB 2022/08/1212.08.2022
RC48N Manuals 922.8 KB DE2021/02/1212.02.2021D00426
RC48N Manuals 922.8 KB EN2021/02/1212.02.2021D00426
RC48N Manual (US) Manuals 1.3 MB EN2019/08/1616.08.2019
System Grounding in the Americas, Australia, South Africa and Other Regions Application brochures 576.7 KB EN2019/05/1313.05.2019
Guideline on NGR/Safety Ground Monitoring Technical information 234.7 KB EN2019/09/2020.09.2019
NGRM500 Retrofit Guide (US) Technical information 1.3 MB EN2021/02/1010.02.2021
Mining Product Brochures 11.7 MB ES2020/05/2222.05.2020