6
Instruction Manual
IM01005014E
Effective December 2018
Eaton Innovative Technology
XT50/100 surge protective device
EATON
www.eaton.com
Ground
Circuit
interrupt
device
SPD
Direct current (DC)
48 V, 125 V
Power
supply
(+/–)
(+/–)
Figure 12. Before installation as SPD
Before installation as SPD
Step A
Verify system voltage does not exceed maximum suggested
operating voltage listed in table .
•
All voltage measurements should be completed with a
DC voltmeter
•
Do not install suppressor if measured voltage exceeds
maximum suggested operating limits
Table 2. Maximum suggested operating voltages and wire colors
Model
number
Line-to-line
Line-to-ground
(+/–)
Wire color
Ground
wire color
XT50-048DC
130
65
Black
Green
XT50-125DC
288
144
Black
Green
Step B
Choose suppressor installation location so leads are kept as
short and straight as possible .
Suppressor must be connected
to electrical system via one of the following circuit interrupt
devices:
•
1–two-pole/single-throw 30 A circuit breaker
ote:
N
Pre-existing breakers of rated load size may be utilized if provisions
for multi-conductor connections are made according to NEC 110 .14A .
•
2–single-pole/single-throw 30 A circuit breakers
•
2–30 A Class RK5 fuse(s) (such as Bussmann FRN-R-30 for
less than 125 Vdc)
ote:
N
For isolated ground, suppressor GROUND wire is bonded to shell
internally . If system utilizes isolated ground, then suppressor shell must be
isolated from ground via insulated conduit fitting and ground wire must be
connected to isolated ground bus .
Before installation as secondary surge arrestor
Step A
Follow Step A as above .
Step B
No circuit interrupt device is required .
Installation instructions as SPD
Step 1
Remove power from electrical system before installing suppressor .
Step 2
Mechanically mount suppressor:
•
Suppressor to be installed through panel knockout and via
suppressor optional (these are not on this unit) mounting feet .
Place suppressor against mounting surface and mark feet
positions if applicable . Complete conduit connection installation .
Screw box to surface with appropriate screws
•
Ensure weatherproof conduit and fittings are used to maintain
NEMA 4 rating
•
Suppressor to be mounted for shortest and straightest possible
wire installation from suppressor to system bus . Excessive
wire length and sharp bends degrade suppressor performance;
therefore, avoid excessive wire length and sharp bends when at
all possible
•
If installing on a system other than electrical panel, mount in close
proximity to system being protected using necessary means for
mounting
ote:
N
A circuit interrupt device is still required when installing suppressor on
a system other than electrical panel .
•
Suppressor contains no position-oriented components and can be
mounted upside down or sideways . (Cover may be rotated only
180 degrees to improve label readability . Take care to support cover
to prevent damage to indicator light circuit board and wiring .)
WARNING
COVER WILL NOT SEAL WHEN ROTATED ONLY 90 DEGREES. THIS
INVALIDATES NEMA 4 RATING AND MAY CREATE SAFETY HAZARD.
