Residual Current Circuit Breaker with integrated digital technology

Residual Current Devices dRCM - digital

• Residual current devices
• Shape compatible with and suitable for standard busbar connection to other devices of the P-series
• Twin-purpose terminal (lift/open-mouthed) above and below
• Busbar positioning options (above or below)
• Free terminal space despite installed busbar
• Universal tripping signal switch, also suitable for PLS., PKN., ZP-A.
• Auxiliary switch Z-HK can be mounted
• Contact position indicator red - green
• Tripping indicator white - blue
• Additional Safety
  - ability to seal
  - ability to lock in ON and OFF position
• Delayed types suitable for use with standard fluorescent lamps, with or without electronic ballast (30mA-RCD: 30 units per phase conductor, 100mA-RCD: 90 units per phase conductor). NB: If fluorescent lamps with electronic ballasts are used, more than 30/90 units can be switched but exactly how many depends on the make of the ballast. It is recommended to distribute these ballasts evenly across all phases and to follow the instructions of the ballast manufacturer.

• The device functions irrespective of the position of installation
• Tripping is line voltage-independent. Consequently, the RCD is suitable for “fault current/residual current protection” and “additional protection” within the meaning of the applicable installation rules
• Mains connection at either side
• The 4-pole device can also be used for 3-pole connection: See connection possibilities.
• The 4-pole device can also be used for 2-pole connection: See connection possibilities.
• The test key “T” must be pressed every year. The system operator must be informed of this obligation and his responsibility in a way that can be proven. The yearly test interval is only valid for residential and similar applications. Under all other conditions (e.g. damply or dusty environment), it's recommended to test in shorter intervals (e.g. monthly). A test is further needed if red and yellow LED are on together.
• Pressing the test key “T” serves the only purpose of function testing the residual current device (RCD). This test does not make earthing resistance measurement (RE), or proper checking of the earth conductor condition redundant, which must be performed separately.
• Functioning
  - The green LED becomes active at 0-30% IΔn
  - The yellow LED becomes active at 30-50% IΔn
  - The red LED becomes active at >50% IΔn
• Potential-free relay (NO contact, in parallel with the yellow LED, up to 1 A ohmic load / 230 V~) for external prewarning function. Bistabile, means the warning stays on also when the breaker trips, until reset.
• Type -A: Protects against special forms of residual pulsating DC which have have not been smoothed
• Type -G: High reliability against unwanted tripping. Compulsory for any circuit where personal injury or damage to property may occur in case of unwanted tripping (ÖVE/ÖNORM E 8001-1 § 12.1.6).
• Type -G/A: Additionally protects against special forms of residual pulsating DC which have not been smoothed.
• Type -R: To aviod unwanted tripping due to X-ray devices.
• Type -S: Selective residual current device sensitive to AC, type -S. Compulsory for systems with surge arresters downstream of the RCD (ÖVE/ÖNORM E 8001-1 § 12.1.5).
• Type -S/A: Additionally protects against special forms of residual pulsating pulsating DC which have not been smoothed.
• Type -U: Suitable for speed-controlled drives with frequency converters in household, trade, and industry.

Unwanted tripping is avoided thanks to a tripping characteristic designed particularly for frequency converters.
See also explanation “Frequency Converter-Proof RCDs - What for?”
Application according to ÖVE/ÖNORM E 8001-1 and Decision EN 219 (1989),
VDE 0100, SEV 1000.

 

Tripping
Type G	10 ms delay
Type S	40 ms delay - with selective disconnecting function
Rated voltage	Un 240/415 V AC, 50 Hz
Operation voltage electronic	50 – 254V AC
Voltage range test circuit	184 – 440V AC
Rated tripping current	IΔn 30, 300 mA
Sensitivity	Alternating, pulsed and direct currents
Rated insulation voltage	Ui 440 V
Rated impulse withstand voltage	Uimp 4 kV (1.2/50μs)
Rated short circuit capacity	Icn 10 kA
Peak withstand current
Type G/B and G/B+	3 kA (8/20 μs) surge current proof
Type S/B and S/B+	typ. 5 kA (8/20 μs) selective + surge current proof