ABB Vzduchové jističe EMAX E1-E6 Montážní návody a manuály (03)

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

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-25°C .5.5 Protection functions The PR121/P unit provides independent protection functions, i. □ atchdog for protection against Trip.5. For the fixed-time protections with adjustable delay, the relationship adopted follows: k.n°.1 Calculating the RMS All the protection functions their respective processing the basis the real rms value the currents (the protection disabled for current values greater than 8In [where I4>0,8In], greater than 6In [where 0.1.2.5xIn current the Ne, the protection considered being set 100%.The presence the auxiliary power supply enables the relay unit used even with the circuit-breaker open. □ atchdog for proper current sensor connection (CS).. protection against overload with inverse time "L"; 2. This function can accessed through PR10/T test unit only via test bus and through HMI030 via local bus. The PR121/P unit allows the neutral pole's current signal beprocessed using different relationships with the value the phases.. □ atchdog for proper opening solenoid connection (TC).2. protectionagainst earth fault with adjustable delay "G"; 5.3 atchdog The PR121/P unit provides some watchdog functions guarantee the proper management relay malfunctions. If the waveform has deformation beyond the declared limit (6. 12. 12.. the circuit-breaker does not open immediately the first time the Trip Coil hit (partial failure), TRIP commands are sent repeatedly until the circuit-breaker opens.2. The characteristics the power pack are given the table below. protectionagainst instantaneous short-circuit high currents "Iinst". The unit also has "backup protection" function.4 unication bus Local bus rear connector; RS485 physical interface, Modbus protocol.2. 12. 2 Page No.2. 12. Any anomalies are indicated the LED coming on, explained par. A timing indication ("alarm" LED) provided the front the unit, which enabled during alarm for each protection; disabled when the alarm condition ceases when the protection has been tripped.8In] and greater than 4In [where I4<0,5In].2 easuring Function A current measuring function (ammeter) available all versions the PR121/P unit. protection against short-circuit with adjustable delay "S"; 3. This function can activated through PR010/T test unit. 12.. Test bus front test connector. +70°C -40°C . 12. +90°C 0% . Ifthe sensors are disconnected there Rating Plug error, when activated, opening command is issued due the being activated.B. For the inverse-time protections, the relationship between trip time and overcurrent given the formula: /I2. C ris tic 121/P Auxiliary voltage (galvanically separated) 24V ±20% Maximum ripple 5% Inrush current 24V ~10A for ms Rated power 24V ~2W 1 iro ris tic s Operating temperature Storage temperature Relative humidity Degree protection (with PR121/P installed the circuit-breaker) 12. With auxiliary voltage, the protection records historical the maximum current read.e.5In< I4<0.. 98% with condensation IP 30 Model L2234 Apparatus Scale L 2778 Doc. These functions are follows: □ Rating PLUG validity.5. protectionagainst instantaneous short-circuit "I"; 4.. 32/158 .1. N.7. Any anomalies are indicated the LED coming on, explained par.: Beyond 15.: 1.7.3@2In), the tolerance for the calculation the true rms value will increase