Advanced Protection XCS - Manual (Page 3)

The XCS is a Type 1 SPD. The XCS is suitable
for use almost anywhere (not as a plug-in SPD).
Type 1 SPDs are evaluated more rigorously by UL
1449 for 2008 NEC ® Article 285 compliance. Type
1 SPDs and their connecting leads have been
evaluated for line side applications without need
for supplemental overcurrent protection. Type 1
SPDs include internal overcurrent protection. As
a generalization, there are practical maintenance
reasons for installing on the load side of the main
overcurrent device (i.e. Type 2 installation). When
connected on load side of main disconnect, we
recommend connecting via a 30A circuit breaker
due to 10 AWG conductors. The circuit breaker
serves as a disconnect switch and provides NEC ®
imposed short circuit protection to the conductors
in Type 2 or 4 applications. (cUL models are Type
2 due to different cUL criteria.)
Simplified Explanation of Operation: SPDs
sense overvoltage and create a momentary short
circuit to redirect harmful surge energy to earth
ground. They reset automatically and wait for the
next surge. This is similar to the pressure relief
valve on a water heater: pressure goes up, valve
opens to relieve pressure and then resets. In an
electrical system, an SPD senses overvoltage,
shorts temporarily sending energy to ground and
then resets. SPDs are capable of repeating this
function thousands of times.
Parts List
1 - XCS suppressor including 3’ (~1m) conductors
1 - Installation Sheet (this document)
1 - Data Sheet (attached)
If the Flush Mount Kit was ordered,
additional parts include:
1 - Flush Mount Plate
4 - Mounting Screws
*See Figure 3 For Installation
Most XCS have demonstrated 200kA or 100kA
Short Circuit Current Ratings (SCCR) including
leads. See UL Label markings on SPD or see
Data Sheet for specs.) Supplemental overcurrent
protection is not required to protect this SPD.
However, NEC ® convention requires that connecting
conductors have overcurrent protection in Type 2 or
4 applications. Follow applicable codes.
This device features internal overcurrent and
overtemperature protection that will disconnect
effected surge suppression components at the
end of their useful life, but will maintain power
to the load – now unprotected. If this situation
is undesirable for the application, follow these
instructions for replacing the device. XCS is
ultrasonically welded closed and contains no user
serviceable parts.
Specifications
Temperature Operating -40 o C (-40 o F) to 60 o C (+140 o F)
Temperature Storage -55 o C (-67 o F) to 65 o C (+149 o F)
Wire Size & Installation Torque 10 AWG; 18 inch-pounds
Appropriate Circuit Breaker
based on conductor size
30A (SPD includes internal OCP)
NEMA 250 Enclosure Rating
Type 4X with appropriate
sealing and sealing conduits
Voltage Rating & Application
Before installing SPD, verify by nameplate voltage
or model number that it has the same voltage rating
as the power distribution system. See attached Data
Sheet or call APT Tech Support at (800) 237-4567
as appropriate. The SPD’s specifier or user should
be familiar with the configuration and arrangement
of the power distribution system. The system is
defined by how the secondary windings of the
transformer supplying the service entrance main or
load are configured. This includes whether or not
the transformer windings are referenced to earth via
a grounding conductor. The system configuration is
not based on how any specific load or equipment is
connected to a particular power distribution system.
SPDs should be installed per the distribution system,
not per a load or motor’s wiring connection.
For example, suppose a 480V three phase motor
appears to be connected as a 480V Delta. In
actuality, the serving distribution system might
be a 480Y/277V grounded Wye, with or without a
neutral pulled to the motor or MCC. The system
is still a 480Y/277V Wye, even though the load
is connected as a Delta. A grounded Wye has a
defined reference to ground (i.e., neutral is bonded
to ground). In contrast, some Delta systems are
ungrounded, which have no reference to ground.
Figure 4
3.00"
.183"
7.91"
7.41"
∅
.201"
2.21" 3.00"
DIMENSIONS & WEIGHT
3