Pub. 42004-735L2D
M
ODEL
LE300
S
ERIES
W
ALL
-M
OUNT
P
AGE
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ARTY
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p:\standard ioms - current release\42004 instr. manuals\42004-735l2d.doc
02/16
Page Line Ground Fault Detection
DC resistance from either L1 or L2 to ground for fault ............................................................
5,000 ohms
DC resistance from either L1 or L2 to ground for no fault .......................................................
8,000 ohms
Minimum ground fault duration for detection ........................................................................ 10 s (nominal)
Minimum no ground fault duration for detection ................................................................... 10 s (nominal)
No ground fault to ground fault propagation delay .......................................
20 s (includes detection time)
Ground fault to no ground fault propagation delay .......................................
20 s (includes detection time)
N
OTE
:
Rapidly changing ground fault conditions may or may not be detected.
Page Line Ground Fault Generation
Resistance when generating ground fault ................................................................... 3.3 kilohms (nominal)
Resistance when not generating ground fault .............................................................................
1 Megohm
N
OTE
:
The resistance is from the center tap of the page line coupling transformer to ground.
Party Line Off-hook detection
DC resistance between L1 and L2 for off-hook ...........................................................................
300 ohms
DC resistance between L1 and L2 for on-hook ......................................................................
30,000 ohms
Minimum off-hook duration for detection ........................................................................... 50 ms (nominal)
Minimum on-hook duration for detection ................................................................................. 5 s (nominal)
On-hook to off-hook propagation delay .......................................................
0.5 s (includes detection time)
Off-hook to on-hook propagation delay ........................................................
10 s (includes detection time)
N
OTE
:
Rapidly changing off-hook or on-hook conditions may or may not be detected.
Contact Outputs
Contact output type .......................................................................................... DPDT miniature signal relay
Switching power ....................................................................................................
30 W dc (resistive load)
62.5 VA ac (resistive load)
Switching voltage..........................................................................................................................
110 V dc
125 V ac
Switching current ................................................................................................................................
1.0 A
Minimum switching capacity ............................................................................. 10
A, 10 mV dc (nominal)
N
OTE
:
When neither the T1/E1 Link nor the LVDS link is detected, the contact outputs are de-energized.