Bender rcm420 - Page 41

Data
41
RCM420_D00057_03_M_ XXEN/03.2021
Response values
Rated residual operating current I
Δn1
(prewarning, AL1) .............................................50…100 % x I
Δn2
, (50 %)*
Rated residual operating current I
Δn2
(Alarm, AL2) ............................................................ 10 mA…10 A (30 mA)*
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