Bender rcm420 - Page 36

Technical data
36
TGH1410en/03.2012
Hysteresis .......................................................................................................................................... 10...25 % (15%)*
Specified time
Starting delay t ...................................................................................................................................... 0...10 s (0.5 s)*
Response delay t
on2
(Alarm) ................................................................................................................... 0...10 s (0 s)*
Response delay t
on1
(prewarning) .......................................................................................................... 0...10 s (1 s)*
Delay on release t
off
............................................................................................................................... 0...300 s (1 s)*
Operating time t
ae
at I
Δn
= 1 x I
Δn1/2
.......................................................................................................... ≤ 180 ms
Operating time t
ae
at I
Δn
= 5 x I
Δn1/2
............................................................................................................ ≤ 30 ms
Response time t
an
.............................................................................................................................. t
an
= t
ae
+ t
on1/2
Recovery time t
b
............................................................................................................................................. ≤ 300 ms
Number of reload cycles ............................................................................................................................. 0...100 (0)*
Cable lengths for measuring current transformers
Single wire ≥ 0.75 mm
2
..................................................................................................................................... 0...1 m
Single wire, twisted ≥ 0.75 mm
2
.................................................................................................................... 0...10 m
Shielded cable ≥ 0.75 mm
2
............................................................................................................................. 0...40 m
Recommended cable
(shielded, shield on one side connected to terminal l of the RCM420, not connected to earth) ..................................
........................................................................................................................................................ J-Y(St)Y min. 2 x 0.8
Connection ..............................................................................................................................................screw terminals
Displays, memory
Display range, measured value ................................................................................................................... 3 mA...16 A
Error of indication .............................................................................................................................± 15 % / ± 2 digit
Measured-value memory for alarm value ..................................................................... data record measured values
Password ......................................................................................................................................... off / 0...999 (OFF)*
Fault memory alarm relay ........................................................................................................................ on / off (off)*
Inputs/outputs
Cable length for external test / reset button...................................................................................................0…10 m
Switching elements
Number of switching elements ............................................................................................. 2 x 1 changeover contact
Operating principle ...........................................................................N/C operation/ N/O operation (N/O operation)*
Electrical service life under rated operating conditions................................................... 10000 switching operations
Contact data acc. to IEC 60947-5-1: