Page 9
SE-330
Neutral-Grounding-Resistor
Monitor
Rev.
9-A-112913
(NOTE 2)
REMOVAL
1
1
4
4
2
2
3
3
5
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
L1
L2 / N
S P G
SP G A
R
S E NS IN G
R E S I S T OR
G
S
1
5
5A
1A
EF
CT
C
6
6
7
7
10
1 0
8
8
1 1
1 1
9
9
12
13
14
15
1 6
17
1 8
1 9
20
2 1
U N I T
HE A L T HY
K4
N C
2 4 V
0V
R E S E T
P U L S E E NA B LE
A N A LO G OU T P U T
2 7
28
29
2 2
2 3
2 4
2 5
26
K3
K2
G R O U N D
F A U L T
R E S I S T OR
F A U L T
K 1
+
+
-
RETAINER SCREW
RETAINER
8.0
(0.31)
114.3
(4.50)
98.3
(3.87)
6.4
(0.25)
21
2.6
(8.37)
225.4
(8.87)
138.0
(5.43)
SIDE VIEW
FRONT VIEW
FRONT VIEW
SE-330-SMA
25.4
(1.00)
63.5
(2.50)
5.0
(0.20)
21
5.9
(8.50)
BEZEL OUTLINE
ADAPTER PANEL OUTLINE
MOUNTING DETAIL
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. MOUNTING SCREWS: M4 OR 8-32 PANHEAD.
INSTALLATION
1. LOOSEN RETAINER SCREWS, MOVE RETAINERS
OUTWARD AND TIGHTEN RETAINER SCREWS.
2. MATE MONITOR WITH ADAPTER PLUG-IN TERMINALS.
LOOSEN RETAINER SCREWS TO LET RETAINERS
SNAP OVER MONITOR BACKPLATE.
3. ENSURE THAT RETAINERS ARE AGAINST MONITOR
BODY AND TIGHTEN RETAINER SCREWS.
1. LOOSEN RETAINER SCREWS, SLIDE RETAINERS AWAY
FROM MONITOR BODY AND TIGHTEN RETAINER SCREWS.
2. PULL MONITOR FORWARD.
0.1
0.5 0.7 1.0
2.0
3.0
5.0
10.0
4
10
8
15
20
40
6
60
80
100
2
1.0
1.2
1.4
1.6
1.8 2.0 2.2
2.4
2.6
2.8
3.0
SE-330
NEUTRAL-GROUNDING-RESISTOR
MONITOR
0.2
0.3
0.4
CAL
RESET
GF TRIP TIME (s)
PULSE PERIOD (s)
GF TRIP LEVEL
(% CT RATING)
LITTELFUSE STARTCO
TRIP
GROUND
FAULT
POWER
RELAY K1
DIAGNOSTIC
CALIBRATED
TRIP
RESISTOR
FAULT
60
170
130
200
340
800
100
1200
1700
2000
20
V TRIP LEVEL
N
(
)
S5
20 K
V x 1
N
100 K
V x 5
N
Ω
Ω
FIGURE 5. SE-330 Outline and Surface-Mounting Details.
