Danfoss KP 1E Installation Manual page 2

Electrical connection
The KP-E pressure switch placed in explosive zone must always be
wired through reliable Ex zener barrier, placed outside ex-zone,
to ensure insufficient energy supply to cause the ignition of
surrounding atmosphere by an electrical spark or the heating of
components of circuitry.
The equipment to be used for electrical load limiting must always
be approved for use in the zone concerned.
Intrinsic safety protection method
EX - zone
KP-E
Must be used with certified Ex ic barrier (product matching) satisfying the input parameters.
Contact function
Contact 1-4 opens on pressure drop:
KP 1E
Contact 1-2 opens on pressure rise:
KP 7EW,
KP 7EB
Manual trip function
Automatic reset
2 | 520H11925 | DKRCC.PI.CA0.C4.02
Electrical data for intrinsically safe
Non EX - zone
specification (for all KP-E types):
EX certified
Zenner
barrier
Signal
Range
6 mm
(15/64 in)
Cables and cable entries approved for the application must be
used and can not be in contact with sharp edges. Cables must be
connected with adequate stress relief that way that pulling forces
can not be carried throug the cable to the terminal.
Note:
A particular system can be classified in different zones, for
different parts of the system.
Pi max: 1 W
Ui max: 30 V
Ii max: 0.1 A
Ci max: 0.5 nF
Li max: 0.2 µH
Diff.
Product marking
II3G
Ex ic IIB T6Gc
Manual reset
© Danfoss | DCS (jmn) | 2017.04