Advanced Protection SPDee DC - Manual (Page 3)

replacing the device. SPD
ee
is ultrasonically welded
closed and contains no user serviceable parts.
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.
SPDs on Ungrounded Systems
Caution – Ungrounded AC power systems are
inherently unstable and can produce excessively
high line-to-ground voltages during certain fault
conditions. During these fault conditions, any
electrical equipment including an SPD, may be
subjected to voltages which exceed their designed
ratings. This information is being provided to the
user so that an informed decision can be made
before installing any electrical equipment on an
ungrounded power system.
DC SPD Installation when DC+ or DC- is grounded
The standard SPD
ee
DC SPD may be used when
DC- is bonded to ground. In rare applications where
DC+ is bonded to ground, a SPD
ee
DC SPD having
the ‘G’ option suffix must be used. Please consult
factory as appropriate.
Bracket Mount
for flat surfaces
Std. 3/4”-14 Nipple DIN-rail Mount
(rail not incl.)
• 3/4” pipe nipple (conduit nut included)
• Standard 35mm DIN-rail (not included)
- L-bracket tightens onto DIN-rail
•
Standard flat mounting surface
- Attach L-bracket to surface via mounting holes
Figure 5
SPD
ee
Mounting Options
Parts List
1 - SPD
ee
suppressor including
3’ (~1m) conductors
1 - Mounting L bracket
1 - 3/4” conduit nut
2 - Panhead mounting screws
1 - Data Sheet
1 - Installation Sheet (this document)
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.
SPD
ee
includes internal overcurrent protection
Supplemental overcurrent protection is not required
to protect this SPD. The SPD
ee
models listed above
have demonstrated 100kA Short Circuit Current
Ratings (SCCR) including leads on DC power
systems. (See UL Label markings on each SPD or
see Data Sheet for specs.)
Follow all applicable codes, which generally require
that connecting conductors have overcurrent
protection. Based on the SPD’s #8 conductor, we
recommend an immediate upstream overcurrent
protection device rated not greater than 40A. A
40A or smaller circuit breaker or fuse could serve
as a disconnect switch and provide NEC ® or CEC
imposed short circuit protection to the conductors.
Similar SPD
ee
models have demonstrated 200kA
Short Circuit Current Ratings (SCCR) including
leads on AC power systems and have been rated
for Type 1 applications (NEC ® Article 285).
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
TABLE 2: SPECIFICATIONS
Temperature Operating -40 o C (-40 o F) to 65 o C (+149 o F)
Temperature Storage -55 o C (-67 o F) to 65 o C (+149 o F)
Wire Size & Installation Torque 8 AWG; 25 lb - in
6 AWG (Ground); 35 lb - in
NEMA 250 Enclosure Rating
Type 4X with appropriate
sealing & sealing condulets
3
Figure 4 Dimensions and Weight
3.26”
3.26”
1.15”
4.13”
3/4”-14
Sized for std 35mm DIN-rail
3.31” 3.57”
Weight: 1.60 lbs
(0.73 kg)