Maintenance, Blocking Diodes, Bypass Diodes

(1)to one of the .35” (9mm) diameter holes marked “ground” using 5/16” stainless steel hardware. Wrap conductor around bolt. Tighten the screws with adequate torque (usually 132 in-lb). Avoid direct contact of copper ground conductor to aluminum frame.

(2)to a ground lug (manufacturer:ILSCO,model:GBL-4DBT). Tighten the screws with adequate torque (usually 62 in-lb). Use #10-32 stainless steel hardware to attach the lug to the module frame by the torque of 40 in-lb. A stainless steel star washer, positioned between the lug and the anodized surface of the frame, must be employed to break through the anodized layer of the frame extrusion and electrically connect the ground lug to the conducting aluminum frame material.

As a general rule, avoid direct contact of copper or copper alloy ground conductors with the aluminum module frame. All ground bond securing hardware in contact with either the aluminum module frame and / or copper or copper alloy ground conductors must be stainless steel.

maximum system voltage at lowest PV module operating temperature.

11. MAINTENANCE

KDxxxGX-LPxseries modules are designed for long life and require very little maintenance. Under most weather conditions, normal rainfall is sufficient to keep the module glass surface clean. If dirt build-up becomes excessive, clean the glass surface only with a soft cloth using mild detergent and water. USE CAUTION WHEN CLEANING THE BACK SURFACE OF PV MODULE TO AVOID PENETRATING BACK SHEET. PV modules that are mounted flat (0°tilt angle) should be cleaned more often, as they will not "self clean" as effectively as modules mounted at a 15°tilt or greater. Once a year, check the general condition of the wiring and check to be sure that mounting hardware is tight. Loose connections may result in a damaged module or array.

KYOCERA Solar Group Sales Office

Nut

Spring washer

Flat washer

Ground conductor

Cup washer

Star washer

Aluminum frame

Flat washer

Bolt

Nut

Spring washer

Ground lug

Star washer

Aluminum frame

Flat washer Bolt

KYOCERA Corporation Corporate Solar Energy Group

6 Takeda Tobadono-cho Fushimi-ku, Kyoto 612-8501, Japan Phone: 81-75-604-3476

Fax: 81-75-604-3475 http://www.kyocera.com/

KYOCERA Solar, Inc.

7812 East Acoma Drive, Scottsdale, AZ 85260, U.S.A. Phone: 1-480-948-8003 or 1-800-223-9580

Fax: 1-480-483-6431

http://www.kyocerasolar.com/

 KYOCERA Solar Pty Ltd.

Level 3, 6-10 Talavera Road, North Ryde NSW 2113, Australia

Phone: 61-2-9870-3946

9. BLOCKING DIODES

In systems utilizing a battery, blocking diodes are typically placed between the battery and PV module output to prevent battery from discharging at night. KDxxxGX-LPxseries modules are made of polycrystalline cells with high electrical “back flow” resistance to nighttime battery discharging. As a result, KDxxxGX-LPxseries modules do not contain a blocking diode when shipped from the factory. Most PV charge regulators and inverters incorporate nighttime disconnect feature.

10. BYPASS DIODES

Partial shading of an individual module in a source circuit string (i.e. two or more modules connected in series) can cause a reverse voltage across the shaded cells within the module. Module output current is then forced through the shaded area by the remaining illuminated cells and other PV modules in series with the partially shaded module(s). The current forced through the shaded cells within PV module (or modules) causes additional module heating and severe loss of power. All KDxxxGX-LPxseries modules are supplied with factory installed (non user serviceable) bypass diodes.

The purpose of bypass diodes is to provide a low-resistance current path around the shaded cells, thereby minimizing PV module heating and array current losses.

PV modules employ bypass diodes that have:

・Rated Average Forward Current [IF(AV)] Above maximum system current at highest PV module operating temperature.

・Rated Repetitive Peak Reverse Voltage [VRRM] Above

Fax: 61-2-9888-9673

http://www.kyocerasolar.com.au/

 KYOCERA Solar do Brasil Ltda.

Av. das Americas, 20007 –Bloco 2 – Salas (rooms) 105 to 108,

Rio de Janeiro, 22790-851, Brazil

Phone: 55-21-3724-3900

Fax: 55-21-3724-3911

http://www.kyocerasolar.com.br/

 KYOCERA Fineceramics GmbH

Fritz-Mueller-Strasse 27, 73730 Esslingen, Germany Phone: 49-711-93934-999

Fax: 49-711-93934-950

http://www.kyocerasolar.de/

KYOCERA Asia Pacific Pte. Ltd.

298 Tiong Bahru Road, #13-03/05 Central Plaza

168730 Singapore Phone: 65-6271-0500 Fax: 65-6271-0600 http://www.kyocera.com.sg/

KYOCERA Asia Pacific Ltd.

Room 801-802, Tower 1, South Seas Centre,

75 Mody Road, Tsimshatsui East, Kowloon, Hong Kong Phone: 852-2723-7183

Fax: 852-2724-4501

KYOCERA Asia Pacific Pte. Ltd. Taipei Branch

10 Fl., No.66, Nanking West Road, Taipei, Taiwan Phone: 886-2-2555-3609

Fax: 886-2-2559-4131

KYOCERA (Tianjin) Sales ＆ Trading Corporation

Room 1509, Tower A, Gemdale Plaza,No.91, Jianguo Road, Chaoyang District, Beijing, 100022, China

Phone: 86-10-8528-8838

Fax: 86-10-8528-8839 http://www.kyocera.com.cn/

KYOCERA Korea Co., Ltd.

Diplomatic Center Room #406, 1376-1, Seocho-2Dong, Seocho-Ku, Seoul, 137-072, Korea Phone: 82-2-3463-3538

Fax: 82-2-3463-3539 http://www.kyocera.co.kr/