LDGRB-01 3BSE013177R1 ABB Module DCS s800i / O power supply (spot)

Product Details

Product Description

Product Description
LDGRB-01 3BSE013177R1 ABB Module DCS s800i / O power supply (spot)
LDGRB-01 3BSE013177R1 ABB Module DCS s800i / O power supply (spot)
Our Email: 2235954483@qq.com
contact number:13313705507
contacts：HE
The residual overvoltage protection detects residual voltages caused by earth faults.
When the residual voltage exceeds the set start value of the low-set stage U0>, the
stage generates a start signal after a ~ 70 ms’ start time. When the set operate time
elapses, the stage generates a trip signal.
Stage U0> has a settable resetting time t0r> for reset coordination with existing
electromechanical relays or for reducing fault clearance times of recurring, transient
faults. If stage U0> has started and the residual voltage falls below the set start value
of the stage, the start of the stage remains active for the set resetting time. If the
residual voltage exceeds the set start value again while the timer is running, the
timer is cleared and the start of the stage remains active.
Consequently, the set resetting time ensures that when the stage starts because of
voltage spikes, it is not immediately reset. If stage U0> has already tripped, the stage
is reset in 50 ms after the residual voltage falls below 0.5 times the set start value of
the stage. However, if stage U0> has already tripped and the residual voltage has
fallen below the set start value of the stage, but not below 0.5 times the set start
value, the stage is reset after the set resetting time (t0r>) has expired.
When the residual voltage exceeds the set start value of the high-set stage U0>>, the
stage generates a start signal after a ~ 60 ms’ start time. When the set operate time
has elapsed, the stage generates a trip signal.

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