sepam 20 user manual - Schneider Electric

Use Default parameter setting
The Sepam units are delivered with default parameter
setting and protection setting according to the type of
application.
These "factory" settings are also used with the
SFT 2841 software:
b for the creation of new files in disconnected mode
b for a return to the "factory" settings in connected
mode.
PCRED301005EN - 06/2008
S20, S23, T20, T23, M20 applications
Hardware configuration
b Identification: Sepam xxxx
b Model: UX
b MES module: absent
b MET module: absent
b MSA module: absent
b DSM module: present
b ACE module: absent.
Output parameter setting
b Outputs used: O1 to O4
b Shunt trip units: O1, O3
b Undervoltage trip units: O2, O4
b Impulse mode: no (latched).
Program logic
b Circuit breaker control: no
b Logic discrimination: no
b Logic input assignment: not used.
General characteristics
b Network frequency: 50 Hz
b Group of settings: A
b Enable remote setting: no
b Working language: English
b CT rating: 5 A
b Number of CTs: 3 (I1, I2, I3)
b Rated current In: 630 A
b Basic current Ib: 630 A
b Integration period: 5 min
b Residual current: 3I sum
b Pre-trig for disturbance recording: 36 periods.
Protection functions
b All the protection functions are "Off"
b The settings comprise values and choices that are informative and consistent with
the general default characteristics (in particular rated current In)
b Tripping behavior:
v latching: yes (except for functions 50BF, 49RMS, 37 and 66)
v activation of output O1: yes (except for functions 50BF and 66)
v disturbance recording triggering: with (except for functions 50BF, 48/51LR and
66).
Control matrix
Each Sepam has default program logic according to the type (S20, T20, etc.) as well
as messages for the different LEDs.
The functions are assigned according to the most frequent use of the unit. This
parameter setting and/or marking can be customized if required using the SFT 2841
software tool.
b S20 application:
v activation of output O2 upon protection tripping
v activation of LEDs according to front panel markings
v watchdog on output O4
v disturbance recording triggering upon signal pick-up
b Additional functions for T20 application:
v activation of O1 without latching upon tripping of temperature monitoring 1 to 7
v activation of O1 and LED L9 without latching upon thermal overload tripping
b Additional functions for M20 application:
v activation of outputs O1 and O2 and LED L9 upon tripping of functions, 37 (phase
undercurrent) and 51LR (locked rotor)
v activation of output O2 upon tripping of function 66 (starts per hour)
v latching for function 51LR
b Complement for S23, T23 applications:
All functions, except for 49 RMS, activate the 50BF protection function in the
absence of circuit breaker control.
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