Page 15
SE-330
Neutral-Grounding-Resistor
Monitor
Rev.
9-A-112913
G
R
VOLTA GE O N TH IS SURFACE RISES
TO LINE-TO-NEUTRAL VOLTA GE
WHEN A GROUND FAUL T OCCU RS
N
C A U T I O N
H I G H V O L T A G E
.
.
. . . . . . .
. . . . . . . . . .
E R - 5 KV
SENSING RESI TOR
S
20 K
Ω
2500 VAC MAX
RATINGS:
MAXIMUM VOLTAGE
MAXIMUM CURRENT
RESISTANCE
THERMAL
CONTINUOUS
20 k
Ω
125 mA
2,500 Vac
105.0
(4.1
3)
52.5
(2.07)
7.
9
(0.31)
12.0
(0.47)
21.0
(0.83)
381.0
(15.00)
ALTERNATE NEUTRAL CONNECTION
NEUTRAL CONNECTION
0.25-20 UNC
THREADED
INSERT
10-32 THREADED
INSERT
TOP VIEW
316.0
(12.44)
0.25-20 UNC STUD
188.0
(7
.40)
FRONT VIEW
NOTE 2
NOTES 5 & 6
SIDE VIEW
MINIMUM DISTANCE
TO ADJACENT OBJECTS
NOTE 3
MINIMUM CLEARANCE FROM BASE
254.0 (10.00)
12
7.
0
(5.0
0)
254.0
(1
0.0
0
)
355.6
(14.00)
457.0
(18.00)
50.7
(2.00)
MOUNTING DETAIL
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. TERMINAL-BLOCK SCREWS: 6-32 x 0.25.
3. MOUNTING SCREWS: M6 OR 0.25-20.
4. THIS DEVICE CAN DISSIPATE
300 WATTS. TO MINIMIZE SURFACE
TEMPERATURES FOR SYSTEMS
ALLOWED
TO
OPERATE
CONTINUOUSLY
WITH
A
GROUND
FAULT, MOUNT VERTICALLY WITH
R & G TERMINALS DOWN.
5. ON REVISION 2 UNITS BASE IS
ELECTRICALLY
CONNECTED
TO
TERMINAL G THROUGH JUMPER
FROM TERMINAL G TO SCREW.
THIS CONNECTION MAY BE
REMOVED FOR DIELECTRIC
STRENGTH TESTING. ENSURE
THAT THE JUMPER IS INSTALLED
AFTER
TESTING.
6. ON REVISION 0 & 1 UNITS SCREW
IS NOT PRESENT AND BASE IS
ELECTRICALLY CONNECTED TO
TERMINAL
G.
7. CERTIFICATIONS NOT SHOWN.
. . . . .
TORQUE
5.6 N-m (50 in-lb)
N
N
TERMINAL N (3 LOCATIONS)
10-32 INSERT
OTHERS
. . . . .
9.0 N-m (80 in-lb)
. . .
.
FIGURE 11. ER-5KV Sensing Resistor.
