Toshiba Current Relay RC803A-HP1 - Manual (Page 11)

4 . 4
To use this current relay for detecting overcurrent on
it is necessary to set the detection delay
with the inrush current of taken into consideration.
4.5 Heaters, a n d o t h e r C i r c u i t s
This relay can be used to detect the disconnection of
circuits by sensing the existence of current flow. In other
words, if disconnection occurs, current does not flow and an
undercurrent condition is detected by the relay. For
this relay can be used to detect the disconnection of heater
circuits on constant ovens or heatar circuits for
insulators on transmission and distribution facilities In
extremely cold regions.
5. Hount ing
See Fig. 4 for uounting dieensions. Be careful not to use this
relay in the following conditions:
Locations in aebient outside -10
Locations to high or dripping water,
Dusty/dirty locations,
s u b j e c t t o v i b r a t i o n a m p l i t u d e o r
20 or and shock (above in 3 directions).