Littelfuse Startco SE-601, Руководство пользователя

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Page 3
SE-601 DC Ground-Fault Monitor
Rev. 2-B-073014
2.3 F
RONT
-P
ANEL
I
NDICATION
2.3.1 P
OWER
The green LED labelled PWR indicates presence of the
supply voltage.
2.3.2 T
RIP
The red TRIP LED's indicate a ground-fault trip. The
“-BUS” TRIP LED indicates a ground fault on the negative
dc bus. The “+BUS” TRIP LED indicates a ground fault on
the positive dc bus. Two fast flashes indicate a diagnostic
trip. See Section 2.5
2.4 A
NALOG
O
UTPUT
The non-isolated, 0- to 5-V analog output indicates
ground-fault current. The output is 5 V when ground-fault
current is 20 mA. Use a PGA-0500 Analog Percent Current
Meter with the PGA-05CV Voltage Converter to indicate
ground-fault current. See Figs. 2 and 8.
2.5 S
ELF
D
IAGNOSTICS
A diagnostic trip is indicated by two fast flashes of the
TRIP LED’s. It can be caused by a diagnostic problem
detected by an incorrect reading from non-volatile memory.
Press RESET or cycle supply voltage. If problems persist,
contact Littelfuse Startco.
3. I
NSTALLATION
3.1 SE-601
An SE-601 can be surface or DIN-rail mounted. See
Fig. 1. Panel mounting requires a PMA-55 or PMA-60
Panel-Mount Adapter. See Figs. 6 and 7.
Connect the SE-601 DC Ground-Fault Monitor and
SE-GRM-series Ground-Reference Module as shown in
Fig. 2.
Remove the connection to terminals 5 and 9 for
dielectric-strength testing—all inputs and outputs have
ANSI/IEEE C37.90 surge-protection circuits that conduct
above 300 Vac.
3.2 G
ROUND-
R
EFERENCE
M
ODULES
Outline and mounting dimensions for the SE-GRM-series
Ground-Reference Modules are provided in Figs. 3, 4, and
5.
The SE-GRM780 and SE-GRM1000 dissipate
approximately 9.6 and 12.5 W respectively under normal
conditions and 19.2 and 25.0 W respectively at maximum
when a ground fault is present at 780 V or 1000 V. If the
system is to be operated for more than two minutes with a
ground fault present, an additional heat sink is required.
This can be achieved by applying thermal compound
(silicone grease) to the Ground-Reference Module’s
mounting surface, then securely fastening it to an aluminum
panel with minimum dimensions of 300 mm (12”) x 300
mm (12”) x 3 mm (0.120”)
G
UNGROUNDED
DC SYSTEM
SE-GRMXXX
+
-
+
-
S
L1/(V+) L2/(V-)
REMOTE RESET
LEAKAGE
NOTE 1
11
13
15
6
7
8
L1
S
4
L2/N
10
14
16
NOTE 2
SE-601
RS
ANALOG
OUTPUT
5 9
GROUND
FAULT
C
NOTES:
1. USE OPTIONAL PGA-0500 ANALOG
PERCENT
CURRENT METER WITH
PGA-05CV CURRENT VOLTAGE
CONVERTER TO DISPLAY FAULT CURRENT
AS A PERCENT OF 20 mA.
2. OUTPUT RELAY CONTACTS SHOWN IN THE
DE-ENERGIZED
STATE.
3. L1/L2 MAY BE CONNECTED TO DC BUS FOR
BUS VOLTAGES NOT EXCEEDING SUPPLY
VOLTAGE OPTION SPECIFIED.
4. DO NOT EXCEED OUTPUT-RELAY CONTACT
RATINGS.
I
PGA-0500 PGA-05CV
G
R
R
PWR
- BUS
+ BUS
INDICATION
FIGURE 2. Typical Connection Diagram.