General Installation Manual
© Feb 2012, SANYO Electric Co., Ltd. All Rights Reserved
5
•
If using this method, please follow instructions in previous
section regarding using bolts and nuts with larger grounding
holes.
•
Use a grounding tin plated solid copper lay-in lug rated for
direct burial and outdoor use. Lug must be used
ILSCO
GBL-4DBT, Burndy CL501TN.
•
Attach grounding lug to module frame using a stainless steel
bolt and lock-nut as shown in figure 3.5.
•
Tighten stainless steel set screw at the torque specified by
lug manufacturer to secure copper wire.
•
Recommended torque value in tightening bolt and nut is 2.3
N.m (20in-lb).
Using a Grounding Clip with self- tapping screw
•
Use Tyco Electronics 1954381-1 as grounding clip.
•
As shown in figure 3.6, place the grounding clip onto the
module frame.
•
Thread the screw into the hole until the head is flush with the
base and base is flush with the frame, then tighten the screw
with 1/4 to 1/2 turn.
Recommended torque value in tightening self tapping screw
is between 2.3 and 2.8 Nm.
•
Insert the wire into the wire slot. Press down on both ends of
the wire.
•
Manually, or using channel lock pliers, push the slider over
the base until it covers the base. This will terminate the wire.
•
For more information, please refer to Instruction sheet issued
by Tyco Electronics.
Using a Grounding Clip with bolt and nut
•
Use Tyco Electronics 1954381-2 as grounding clip.
•
As shown in figure 3.7, place the grounding clip onto the
module frame.
•
Thread the hex nut onto the end of the screw, then using a
3/8-in. wrench, tighten the nut.
Recommended torque value in tightening bolt and nut is
between 1.7 and 2.2 Nm.
•
Insert the wire into the wire slot. Press down on both ends of
the wire.
•
Manually, or using channel lock pliers, push the slider over
the base until it covers the base. This will terminate the wire.
•
For more information, please refer to Instruction sheet issued
by Tyco Electronics.
Module Terminations
A junction box as a terminal enclosure is equipped for electrical
connections.
Modules are equipped with MC
TM
plugs as a terminal enclosure.
Use these MC
TM
plugs for electrical connections.
Junction Box and Terminals
•
Modules are equipped with one junction box containing
terminals for both, positive and negative polarity, and bypass
diodes.
•
Each terminal is dedicated to one polarity with the polarity
symbols engraved onto the body of the junction box (see
Figure 4)
•
Each terminal is provided with factory installed lead cables
and a latching connector for series and string connections.
Always use these connectors and do not detach them from
cables.
•
Latching connectors are type IV and made by Multi-Contact.
Supplied connectors listed by UL.
•
In order to comply with NEC 2008, a locking sleeve needs to
be used with all connectors that are exposed.
•
The locking sleeve (PV-SSH4) is made by Multi-Contact and
can only be released with a special tool also made by
Multicontact (PV-MS). Locking sleeves are not supplied with
modules and must be purchased separately.
Conduit
•
In applications where wire raceways or conduit are used,
follow the applicable codes for outdoor installations..
•
Verify that all fittings are properly installed to protect wires
against damage and prevent moisture intrusion.
DIODES
Bypass Diodes
•
When modules in series strings are partially shaded, it may
cause reverse voltage across cells or modules, because the
current from other cells in the same series is forced to flow
through the shaded area. This may cause undesirable heating
to occur.
•
The use of a diode to bypass the shaded area can minimize
both heating and array current reduction.
•
Modules are equipped with factory installed bypass diodes.
The factory-installed diodes provide proper circuit protection
for the systems within the specified system voltage, so that
you do not need any other additional bypass diodes.
•
Contact your SANYO Authorized Representative for proper
diode type, if it is necessary to add or change diodes due to
system specifications.
Figure 4 Configuration of
Junction Box
P V U ‑ B 5 0 . 2
I P 6 5
6 0 0 V
P V U ‑ B 5 0 . 2
Cable
Connector
MC
TM
Plug
Option:
Safety lock clip
Negative ( - )
Positive ( + )
