Littelfuse Startco SE-325, Руководство пользователя, Страница: 9 / 20

Startco Engineering Ltd. Page 5
SE-325 Neutral-Grounding-Resistor Monitor Rev. 8
Pub. SE-325-M, May 6, 2008.
3.2 G
ROUND
-F
AULT
CT
Outline and mounting details for CT200 and CT200L
current transformers are shown in Fig. 3. Ground-fault-CT
connections and the typical ground-fault-CT location are
shown in Fig. 1.
Connect the secondary of the ground-fault CT to SE-325
terminals CT1 and CT2. The CT connection to the SE-325
is not polarity sensitive. Ground one side of the CT
secondary. For electrically noisy environments or lead
lengths in excess of 10 m (30 ft), use shielded, twisted-pair
cable.
D
A
E
B
FRONT
9.4
(0.37)
F
BOTTOM
B
C
TAP M4 OR 8-32
22.2
(0.87)
44.5
(1.75)
MOUNTING DETAIL
SIDE
WHITE
BLACK
X1
X2
44.5 MAX
(1.75)
NOTES:
1. DIMENSIONS IN
MILLIMETRES (INCHES).
2. MOUNTING SCREWS:
M4 OR 8-32.
PART
NUMBER
CT200
CT200L
A B C D E F
55.9 (2.20)
88.9 (3.50)
120.7 (4.75)
154.0 (6.06)
101.6 (4.00)
133.4 (5.25)
98.3 (3.87)
139.7 (5.50)
108.0 (4.25)
144.5 (5.69)
5.6 (0.22)
7.1 (0.28)
DIMENSIONS
FIGURE 3. Current Transformers.