WARNING!
•Carefully read the manual before the installation or use.
•This device is to be installed by qualified personnel, complying to current standards, to avoid damages.
•Before any maintenance operation on the device, remove supply inputs.
•The manufacturer cannot be held responsible for electrical safety in case of improper use of the equipment.
•Products illustrated herein are subject to alteration and changes without
prior notice.
Description
•Earth leakage relay type A
•Measuring in true effective value (TRMS)
•Third harmonic filtering (settable)
•Modular DIN-rail housing, 3 modules
•Green power LED indicator (ON)
•External residual current transfomer
•Fail safe function for each four relays (settable)
•Visualization instant leakage values
•Backlighted LCD display (green, yellow, red)
•4 red indicator LEDs for tripping
•TEST and RESET by front button or remote contact
•Four independent relays to control the circuit breakers of the four channels
•Instantaneous bar-graph of current measurement for each channel
•Log tripped residual current
•RS-485 communication (Modbus RTU protocol)
Display and LED functions
Thanks to LCD display, the user can view very quickly the measurements (instant leakage values, filter TRMS, MAX values, THD, crest factor), the graph bar, the
Log, the alarms and can access to all settings.
•Green: detected current lower than threshold
•Yellow:
- detected current higher than PRE-ALARM threshold but lower than TRIP threshold
•Red:
- detected current higher than TRIP threshold and relay activation
- current leakage read off scale
- TEST, causes tripping of the relay
- open residual current transformer circuit (or not right connected)
Front keyboard
RESET key –To reset the relay after tripping, used to exit from settings menu.
TEST key –Causes tripping of the relays, to confirm a choice.
PROG keys –Used to enter into settings menu, to scroll display pages.
▲and ▼ keys –Used to switch between visualization modes, to select among possible choices and to modify settings (increment/decrement).
