Nextek l DC/DC-1.6H-24V-LV User manual

Model C/ C-1.6H-24V-LV (low voltage)
C/ C-1.6H-24V-FVL (fixed voltage - low)
C/ C-1.6H-24V-FVH (fixed voltage - high)
Rev 081114
Please contact Customer Support at 1-800-24VOLTS for further information.
Installation and Userʼs Manual
Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the
United States and in other countries throughout the world.
Isolated DC to DC Converter

ABOUT NEXTEK POWER SYSTEMS 3
INTRO UCTION / OVERVIEW 4
1.0 SAFETY 5
2.0 STAN AR S & REQUIREMENTS 10
3.0 REGULATORY INFORMATION 11
4.0 TRAINING 11
5.0 FEATURES 12
6.0 TECHNICAL SPECIFICATIONS 13
7.0 GENERAL REQUIREMENTS 15
8.0 INSTALLATION PROCE URE 16
8.1 Preparing the C/ C for Mounting 16
8.2 Mounting Requirements 16
8.3 Wall or I-beam mounting 17
8.4 Grounding 17
8.5 Wiring the Unit 19
8.6 Connecting Multiple Units 23
8.7 Power the Unit 23
9.0 FAULT IN ICATORS 27
10.0 INSPECTION AN MAINTENANCE 28
11.0 TROUBLESHOOTING 29
12.0 NOTES 31
Rev. 081114
For more information: Nextek Power Systems Tel: [phone] www.nextekpower.com
461 Burroughs Street Toll free: 1 (877) 24-VOLTS
etroit, Michigan 48202 Fax: [phone] [e-mail]
2 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
TABLE OF CONTENTS
Isolated DC to DC Converter Installation Manual

Nextek Power Systems AC/ C integration technology represents a breakthrough in on-
site electrical management, combining the availability of AC power with the quality and
efficiency of a C supply.
NEXTEK PRO UCT BENEFITS
•Easy conversion of AC lighting fixtures to C-powered units
•Easy conversion of AC grid power into C power for commercial building
applications
•Highly efficient management of peak loads
•Future-proof lighting and other systems to be developed
•Nextek Power Systems irect Coupling® Technology, directly connects clean
power generated at a building to its electronic loads inside cutting down on over-
all power consumption, boosts electricity generated and stored on-site, and
delivers a robust renewable energy ready network.
ISCLAIMER
Nextek Power Systems has made every reasonable effort to ensure the accuracy of the
information in this catalog. Nextek Power Systems does not guarantee that the
information is error free, nor do we make any other representation, warranty or
guarantee that the information is accurate, correct, reliable or current. Nextek Power
Systems, Inc. reserves the right to make any adjustments to the information contained
herein at any time without notice. The specifications in this catalog are for reference
purposes only and are subject to change without notice. Consult Nextek Power Systems
for the latest design specifications. All trademarks are either the exclusive property of
Nextek Power Systems, Inc. or other companies. Copyright © 2013-2014 by Nextek
Power Systems, Inc. in the United States and other countries throughout the world.
ABOUT NEXTEK POWER SYSTE S
Rev. 081114
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Isolated DC to DC Converter Installation Manual

DC to DC Converter
A C to C Converter is an electronic circuit that converts a source of irect Current
( C) from one voltage level to another. C/ C power converters are employed in a
variety of applications, including power supplies for personal computers, office
equipment, spacecraft power systems, laptop computers, and telecommunications
equipment, as well as C motor drives. The input to a C/ C converter is an
unreguated C voltage.
The Nextek isolated C/ C converter is a step-down converter producing a lower
regulated output voltage (24 V C) from a higher varying input voltage (70-430 V C).
Also, the Nextek C/ C converter is isolated, resulting in the prevention of C back
feeding from the input to the output.
INTRODUCTION
Rev. 081114
4 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Isolated DC to DC Converter Installation Manual

1.1 SAVE THESE INSTRUCTIONS– This manual contains important safety and
operating instructions for the Nextek C to C Converter ( C/ C), Models
C/ C-1.6H-24V-LV (low voltage), C/ C-1.6H-24V-FVL (fixed voltage- low), and
C/ C-1.6H-24V-FVH (fixed voltage- high) that shall be followed during
installation and maintenance of the converter.
CONSERVEZ CES INSTRUCTIONS - Ce manuel contient des consignes de
sécurité importantes ainsi que les instructions d'utilisation pour le régulateur de
poursuite du point de puissance maximale isolé, ( C/ C) Nextek, modèles
C/ C-1.6H-24V-LV, C/ C-1.6H-24V-FVL, and C/ C-1.6H-24V-FVH qui
doivent être suivies lors de l'installation et de l'entretien du convertisseur.
The following symbols are used throughout this manual to indicate potentially
dangerous conditions or mark important safety instructions:
Les symboles suivants sont utilisés dans ce manuel pour indiquer des
conditions potentiellement dangereuses ou marquent des instructions de
sécurité importantes:
DANGER/DANGER:
Indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
Indique une situation extrêmement dangereuse qui, si elle n'est pas
évitée, entraînera la mort ou des blessures graves.
WARNING/ ISE EN GARDE:
Indicates a potentially dangerous condition. Use extreme caution when
performing this task.
Indique une situation potentiellement dangereuse. Soyez extrêmement
prudent lorsque vous effectuez cette tâche.
CAUTION/ATTENTION:
Indicates a critical procedure for safe and proper operation of the
controller.
Signale une procédure essentielle pour le fonctionnement sûr et correct
du régulateur.
NOTE/RE ARQUE:
Indicates a procedure or function that is important for the safe and proper
operation of the controller.
Indique une procédure ou une fonction qui est importante pour le
fonctionnement sûr et adéquat du régulateur.
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1.0 SAFETY
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1.2 Before using the C/ C, read all instructions and cautionary markings.
Avant d'utiliser le C/ C, lisez toutes les instructions et les avertissements.
1.3 Electrical hazards are probably the most common hazards throughout the
industry. Virtually all workplaces have electrical installations and use electricity.
Les risques électriques sont les dangers les plus communs dans l'industrie.
Presque tous les lieux de travail disposent d'installations électriques et se
servent d'électricité.
1.4 It is very important that all industry employees be familiar with electrical hazards
and know how to protect themselves when working on, near, or with electricity.
In most cases, industry electrical and electronic equipment is designed for both
maximum safety and efficiency. However, potentially hazardous conditions such
as inadvertent contact with hazardous voltages may exist while performing
servicing and maintenance, handling materials, or cleaning.
Il est très important que tous les employés de l'industrie se familiarisent avec les
risques électriques et savent comment se protéger lors de travailler sur, près de
ou avec l'électricité. ans la plupart des cas, l'équipement de l'industrie électrique
et électronique est conçu à la fois pour un maximum de sécurité et d'efficacité.
Cependant, les conditions potentiellement dangereuses telles que tout contact
accidentel avec des tensions dangereuses peuvent exister lors de l'exécution
d’entretien et de service, la manutention des matériaux, ou le nettoyage.
1.5 The improper use of electrical extension cords and portable electrical
equipment can result in hazardous exposure.
L’utilisation incorrecte de rallonges électriques et des appareils électriques
portatifs peut entraîner une exposition dangereuse.
1.6 WARNING - RISK OF ELECTRICAL SHOCK. o not remove main
cover. No user serviceable parts inside. Refer servicing to qualified
service personnel. Normally grounded conductors may be ungrounded
and energized when a ground-fault is indicated.
ISE EN GARDE - RISQUE DE CHOC ÉLECTRIQUE. Ne retirez pas
cette couverture. Aucune pièce réparable par l’utilisateur. Confiez
l'entretien à du personnel qualifié. Conducteurs normalement à la terre
peuvent être mis à la terre et sous tension quand un défaut à la terre est
indiqué.
1.7 DANGER – TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, CAREFULLY FOLLOW THESE INSTRUCTIONS
DANGER - POUR RÉDUIRE LE RISQUE D'INCENDIE OU CHOC
ÉLECTRIQUE, SUIVEZ ATTENTIVE ENT CES CONSIGNES
1.7.1 o not disassemble or attempt to repair the controller. The only user
serviceable part inside the Nextek C/ C are the Input and Ground Fault
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1.0 SAFETY
6 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Isolated DC to DC Converter Installation Manual

Fuses under the front cover.
Ne pas démonter ou tenter de réparer le régulateur. Les seules pièces
réparables par l'utilisateur à l'intérieur du C/ C sont les fusibles
d'entrée et de défaut de la mise à terre sous le couvercle avant.
1.7.2 isconnect power to the unit before installing, removing, cleaning or
otherwise maintaining the unit.
Coupez l'alimentation au réceptacle avant l'installation ou l’enlèvement
de l’unité.
1.7.3 A disconnect device shall be incorporated in field wiring.
Un dispositif de déconnexion doit être incorporé dans le câblage.
1.7.4 For use in a controlled area free of contaminants, please refer to Section
1.8 for environmental conditions.
Pour une utilisation dans une zone contrôlée exempte de contaminants,
veuillez vous référer à la section 1.8 pour les conditions
environnementales.
1.7.5 This unit is provided with an internal C ground fault detector/ interrupter.
Refer to installation instructions for proper fuse selection.
CAUTION: ISCONNECT SUPPLY BEFORE CHANGING FUSE.
Cet appareil est muni d’un défaut à la terre C détecteur / interrupteur
interne. Reportez-vous aux instructions d'installation pour la sélection de
fusible approprié.
ATTENTION: ébrancher l'alimentation avant de changer le fusible.
NOTE: When removing access cover and screws, be careful not to let cover and
screws fall across terminals or circuit board.
RE ARQUE: En retirant le couvercle d’accès et les vis, veillez à ne pas laisser
le couvercle et les vis tomber entre les bornes ou sur la carte de circuit.
1.8 INSTALLATION SAFETY PRECAUTIONS
CONSIGNES E SECURITÉ ’INSTALLATION
1.8.1 Mount the C/ C indoors. Prevent exposure to the elements and do not
allow water to enter the controller.
Montez le C/ C à l'intérieur seulement. Éviter l'exposition aux
éléments et ne pas laisser l'eau pénétrer dans le régulateur.
1.8.2 Power connections must remain tight to avoid excessive heating from a
loose connection.
Les raccordements de puissance doivent rester étanche pour éviter un
échauffement excessif résultant d'un raccord desserré.
1.8.3 Use properly sized conductors and circuit interrupters.
Use Copper, Copper-Clad Aluminum, or Aluminum Conductors.
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1.0 SAFETY
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Isolated DC to DC Converter Installation Manual
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Utilisez des conducteurs et interrupteurs de circuit de taille appropriée.
Utilisez cuivre, aluminium plaqué cuivre, ou en aluminium.
1.8.4 The C/ C is to be connected to C circuits only.
Le C/ C doit être raccordé uniquement à des circuits à courant continu.
1.9 Installers should be advised:
Les installateurs doivent être informés:
1.9.1 These installation instructions are for use by qualified personnel only.
Ces instructions d’installation sont destinées uniquement à un personnel
qualifié.
1.9.2 The equipment contains C voltages.
When the photovoltaic array is exposed to light, it supplies a C voltage
to this equipment.
L'équipement contient des tensions CC.
Lorsque le générateur photovoltaïque est exposée à la lumière, il fournit
une tension continue à cet équipement.
NOTE: Installers must reference the National Electric Code (NEC) sections 250
or 690, when required, to ensure proper system wiring and grounding
compliance. In addition, all state and federal Occupational Safety and Health
Administration (OSHA) guidelines and regulations must be followed.
RE ARQUE: Les installateurs doivent référencer le Code National Electrique
(NEC) articles 250 ou 690, lorsque nécessaire, pour assurer le câblage correct
du système et la conformité de la mise à la terre. En outre, tous les lignes
directrices et les règlements gouvernementaux (OSHA) doivent être respectés.
NOTE: Installers must reference the specific site scope and project drawings for
additional information and considerations, including the system layout and any
related electrical drawings.
RE ARQUE: Les installateurs doivent faire référence à la portée du site
spécifique et les dessins du projet pour obtenir des informations et des
considérations supplémentaires, y compris la configuration du système et les
schémas électriques liés.
1.9.3 The mounting location is important to the performance and operating life of
the controller. The environment must be dry and protected from water
ingress. If required, the controller may be installed in a ventilated enclosure
with sufficient air flow. Never install the C/ C in a sealed enclosure.
L'emplacement de montage est important pour la performance et la
durée de fonctionnement du régulateur. L'environnement doit être sec et
protégé contre la pénétration de l'eau. Si nécessaire, le régulateur peut
être installé dans une enceinte ventilée avec un débit d'air suffisant. Ne
jamais installer le C/ C dans une enceinte étanche.
8 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Rev. 081114
1.0 SAFETY
Isolated DC to DC Converter Installation Manual
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1.9.4 The installation is straightforward, but it is important each step is done
correctly and safely. A mistake can lead to dangerous voltage and current
levels. Be sure to carefully follow each instruction in this section. Read all
instructions first before beginning installation.
L'installation est assez simple, mais il est important que chaque étape
est faite correctement et en toute sécurité. Une erreur peut conduire à
des niveaux de tension et de courant dangereux. Assurez-vous de suivre
attentivement chaque instruction dans cette section. Lisez toutes les
instructions avant de commencer l'installation.
1.9.5 The installation instructions are for installation of a negative grounded
system. National Electrical Code (NEC) requirements are noted on
occasion for convenience, however the installer should have a complete
understanding of NEC and UL requirements for photovoltaic installations.
Les instructions d'installation sont pour l'installation sur des sources à
masse négative. Les exigences National Electrical Code (NEC) sont
notées à l'occasion pour plus de commodité, mais l'installateur doit avoir
une compréhension complète des exigences NEC et UL pour les
installations photovoltaïques.
WARNING - Shock Hazard
ISE EN GARDE - RISQUE DE CHOC ÉLECTRIQUE
1.10 isconnect all power sources to the controller before removing the wiring box
cover. Never remove the cover when voltage exists on any of the C/ C power
connections.
éconnectez toutes les sources d'alimentation du régulateur avant de retirer le
couvercle de la boîte de câblage. Ne retirez jamais le couvercle lorsque la
tension n’existe sur aucune des connexions de puissance C/ C.
1.11 An AC powered Nextek Power Server Module (PSM) must be connected to the
output and powered up prior to any solar being connected to the C/ C input,
in order for the C/ C to function.
Un module serveur de puissance (PSM) Nextek alimenté en CA doit être
connecté à la sortie et sous tension avant qu’aucune solaire ne soit reliée à
l'entrée du C/ C, pour que le C/ C fonctionne.
1.12 The C/ C is designed to keep its external surface temperature from rising
more than 30°C above the ambient temperature.
Le C/ C est conçu pour que sa température à la surface externe ne dépasse
pas la température ambiante de plus de 30° C.
1.13 Treat any conductors and parts of electric equipment as energized that have
been de-energized, but have not been properly locked or tagged out and tested
to a zero energy state. LOCKOUT/TAGOUT MUST ALWAYS BE USE .
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1.0 SAFETY
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10 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Rev. 081114
1.0 SAFETY
Isolated DC to DC Converter Installation Manual
Traiter tous les conducteurs et pièces d'équipement électrique comme sous
tension qui ont été mis hors tension, mais n'ont pas été correctement verrouillés
ou étiquetés et testé à un niveau d'énergie nulle. VERROUILLAGE/
ÉTIQUETAGE OIT TOUJOURS ÊTRE UTILISÉ.
1.14 The Nextek C/ C does not come with the C supply cable. Refer to Table 1.1
for list of acceptable equivalent cabling.
Le C/ C Nextek ne vient pas avec le câble d'alimentation CC. Se reporter au
tableau 1.1 pour la liste des cordons équivalents acceptables.
1.14.1 o not connect the polarity incorrectly, as it will damage the C/ C and
void the warranty on the unit.
Ne branchez pas la polarité incorrectement, car cela endommagerait le
C/ C et annulera la garantie de l'unité.
1.14.2 Use all NEC requirements when installing the C/ C into a system.
Utilisez toutes les exigences NEC lors de l'installation du C/ C dans un
système.
1.15 Suitable for use in air-handling spaces.
Suitable for use in other environmental air space in accordance with section
300.22(c) of the National Electrical Code, or equivalent.
Convient pour une utilisation dans des espaces de traitement d’air.
Convient pour une utilisation dans un autre espace de l'air ambiant conformé-
ment à l’article 300.22 (c) du Code national de l'électricité, ou l'équivalent.
2.0 STANDARDS AND REQUIRE ENTS
2.1 All C cable types must meet all local and national codes.
2.2 Shut off all external C circuit breakers feeding this unit.
Basic Cable Type Other Suitable Types
TS TST
SP-2 SPE-2, SPT-2
SP-3 SPE-3, SPT-3
SV SVE, SVO, SVOO, SVT, SVTO, SVTOO
SJ SJE, SJO, SJOO, SJT, SJTO, SJTOO
SE SE, SO, SOO, ST, STO, STOO
Table 1.1 Suitable Cord Types

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Rev. 081114
3.0 REGULATORY INFOR ATION
Isolated DC to DC Converter Installation Manual
NOTE: This section contains important information for safety and regulatory
requirements.
3.1 The C/ C controller should be installed by a qualified technician according to
the electrical rules of the country in which the product will be installed.
3.2 A means shall be provided to ensure all the poles are disconnected from the
power supply. A two-pole switch incorporated into the fixed wiring is required for
the PV input.
3.3 Installer should provide a permanent and reliable means for grounding using the
C/ C grounding terminal or stud (in the wiring compartment). The clamping of
the ground shall be secured against accidental loosening.
3.4 The entry openings to the C/ C wiring compartment shall be protected with
conduit or with a bushing. To comply with the National Electric Code (NEC), the
current rating of the controller must be equal to or greater than 125% of the
solar array's short circuit output (Isc).
3.5 FCC Requirements:
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by Nextek Power Systems, Inc. for compliance
could void the user’s authority to operate the equipment.
Note:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communication. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment on and off, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
4.0 INSTALLATION QUALIFICATIONS
4.1 Installation work and electrical wiring of permanently-connected power units
must be performed only by qualified service personnel in accordance with all
applicable codes and standards, including fire-rated construction.
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5.0 DC/DC FEATURES
12 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Isolated DC to DC Converter Installation Manual
Wireless
antenna
Keyhole
mounting
slot
Cooling Vents
Lower
mounting
hole
Wiring box
(shown with
cover removed)
Knockouts
Output
terminal J15
(negative)
Output
terminal J16
(positive)
Ground
terminal J14
Green LED -
Run (Flashing)
Red LED -
Fault
Yellow LED - Wireless
Communication
Input terminal
J13
(PV negative)
Input
terminal J12
(PV positive)
Ground Stud

6.0 TECHNICAL SPECIFICATIONS
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Isolated DC to DC Converter Installation Manual
UL1741: Inverters, Converters, Controllers and Interconnection System Equipment for Use With
istributed Energy Resources.
E erge Alliance®Registered ROHS Compliant Negative ground PV only
ECHANICAL DC/DC-1.6H-24V-LV, FVL, FVH
Dimensions H: 16.498"/419 mm W: 5.508"/140 mm : 3.406"/87 mm
Weight 12.0 lbs.
ounting Orientation Horizontal mount
Audible Noise Less than 15 dBA
Operational Environmental Limits Temperature Range: 0° to 49°C
Humidity: 90% RH non-condensing
Vibration: Low-Frequency 10-55 Hz
Storage Environmental Limits Temperature Range: -40° to 85°C
Humidity: 95% RH non-condensing (transport and storage in
protective container)
Vibration: Low-Frequency 10-55 Hz
Construction Made of 20 gauge steel, manufactured in U.S.A.
Installation In proximity to associated load; minimize wiring loss between
output and load
Solar Terminals min/max wire size 12/14 AWG
Output Terminals min/max wire size 2/4 AWG
Recommended Torque Input: 20 inch-pounds (2.26 Nm); Output: 50 inch-pounds (5.65 Nm)
Knockouts (trade sizes) 1"
ELECTRICAL DC/DC-1.6H-24V-LV DC/DC-1.6H-24V-FVL DC/DC-1.6H-24V-FVH
Output Voltage (VDC) 24.5 24.5 24.5
aximum Continuous Output Current
(ADC) 63 63 63
aximum Continuous Output Power
(W) 1600 1600 1600
aximum Operating Current (ADC) 7.6 4.6 4.3
Range of Operating Input Voltage
(VDC) 70-240 350-400 370-430
The aximum Size Input Circuit
Overcurrent Protection Available for
this Unit (ADC)
15 15 15
Efficiency 97.5% peak at
approx 60% load
97.5% peak at
approx 60% load
97.5% peak at
approx 60% load
Quiescent Power (W) 0.7 0.7 0.7

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14 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
6.0 TECHNICAL SPECIFICATIONS
DC/DC Voltage Range (Low Voltage and High Voltage)
The Nextek isolated C/ C converter is a step-down converter producing a lower
regulated output voltage (24 V C) from a higher varying input voltage (70-400
V C). Also, the Nextek C/ C converter is isolated, resulting in the prevention
of C back feeding from the input to the output.
DC/DC-1.6H-24V-LV, FVL, FVH
STATUS INDICATORS
Green Running Status
Red Fault Indicator
Yellow Communication Indicator
Isolated DC to DC Converter Installation Manual
OFF ICROCONTROLLER
TURNS ON DC/DC-1.6H-24V-LV
LOW VOLTAGE
OFF
0V C 60V C 70V C 240V C 600V C
Minimum Operating Voltage Maximum Operating Voltage
*If Voc is required to be greater than 240V C please contact Nextek Power Systems, Inc.
Table 6.1
OFF ICROCONTROLLER
TURNS ON DC/DC-1.6H-24V-FVL
FIXED VOLTAGE LOW
OFF
0V C 60V C 350V C 400V C 600V C
Minimum Operating Voltage Maximum Operating Voltage
*If Voc is required to be greater than 400V C please contact Nextek Power Systems, Inc.
OFF ICROCONTROLLER
TURNS ON
DC/DC-1.6H-24V-FVH
FIXED VOLTAGE HIGH
OFF
0VDC 60VDC 370VDC 430VDC 600VDC
Minimum Operating Voltage Maximum Operating Voltage
*If Voc is required to be greater than 430V C please contact Nextek Power Systems, Inc.

7.1 Recommended Tools
7.1.1 Standard construction and electrical tools along with basic electrical
safety and testing instruments are required for the installation of the
combiner box. This installation requires the following:
#2 and #0 Phillips screwdriver
Slotted screwdriver
Wire strippers
Wire cutters
Pliers
Level
Hack saw (for cutting conduit, if necessary)
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7.0 GENERAL REQUIRE ENTS
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WARNING - Shock Hazard
Always use bushings, connectors, clamp connectors, or wire glands in the
knockout openings to protect wiring from sharp edges. 3/4" bushing is required
for this unit.
ISE EN GARDE - RISQUE DE CHOC ÉLECTRIQUE
Utilisez toujours des bagues, des connecteurs ou des connecteurs de serrage
dans les débouchures pour protéger le câblage des arêtes vives. Une bague de
17mm est requise pour cet appareil.
8.1 Preparing the C/ C for Mounting
Turn off all main power before starting this project, using the Lock Out Tag Out
method. Refer to the facility electrical drawings to identify the mounting locations
and any specific electrical location requirements or special instructions.
8.1.1 Use a #2 Phillips screw driver to remove the four (4) screws that secure
the wiring box cover. Remove the cover and place it aside.
8.2 Mounting requirements
Place the C/ C on a horizontal surface protected from direct sun, high
temperatures, and water. The C/ C requires at least 6" (150 mm) of clearance
above and below, and at least 1" (25 mm) on each side for proper air flow as
shown in Figure 8.1 below.
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8.0 INSTALLATION PROCEDURE
16 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Isolated DC to DC Converter Installation Manual
Figure 8.1

The unit should be mounted in a horizontal orientation. A horizontal orientation
will restrict heat flow and will damage the unit. The unit may be mounted on an
angled orientation of up to 60° from horizontal.
8.3 Mounting Surface Options
8.3.1 Mounting into Wood
8.3.1.1 Slotted mounting holes for the C/ C are located on the flanges
that protrude from the bottom of the unit housing.
8.3.1.2 Place a mark on the mounting surface at the top of the keyholes.
8.3.1.3 Remove the C/ C and drill a 3/32" (2.5 mm) hole at the drill
mark.
8.3.1.4 Insert a #10 wood screw (1 5/8") into the top pilot holes. o not
tighten the screws completely. Leave a 1/4" (6 mm) gap between
the mounting surface and screw heads.
8.3.1.5 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyholes.
8.3.1.6 Check for horizontal plumb with a level.
8.3.1.7 Mark two (2) mounting hole locations at the bottom of the C/ C.
8.3.1.8 Remove the C/ C and drill 3/32" (2.5 mm) holes at the drill
marks.
8.3.1.9 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyhole.
8.3.1.10 The pre-drilled pilot holes should align with the mounting holes
at the bottom of the unit. Secure the controller with two (2) #10
(1 5/8") wood screws.
8.3.1.11 Tighten all four (4) screws.
8.3.2 Mounting into rywall
8.3.2.1 Slotted mounting holes for the C/ C are located on the flanges
that protrude from the bottom of the unit housing.
8.3.2.2 Place a mark on the mounting surface at the top of the keyholes.
8.3.2.3 Remove the C/ C and drill a 3/32" (2.5 mm) hole at the drill
mark.
8.3.2.4 Insert a #10 wall anchor into the top pilot holes. Tap the anchors
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gently with a hammer until they are flush to the mounting
surface. Insert the screws, but do not tighten the screws
completely. Leave a 1/4" (6 mm) gap between the mounting
surface and screw heads.
NOTE: Use a heavyweight metal wall anchor for mounting the C/ C.
o not use a lightweight or plastic anchor, as this may provide
insufficient support.
8.3.2.5 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyholes.
8.3.2.6 Check for horizontal plumb with a level.
8.3.2.7 Mark two (2) mounting hole locations at the bottom of the C/ C.
8.3.2.8 Remove the C/ C and drill 3/32" (2.5 mm) holes at the drill
marks and insert two (2) anchors as in step 8.3.2.4.
8.3.2.9 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyhole.
8.3.2.10 The anchor screw holes should align with the mounting holes at
the bottom of the unit. Secure the controller with the remaining
two (2) screws.
8.3.2.11 Tighten all four (4) screws.
8.3.3 Mounting into Cement
8.3.3.1 Slotted mounting holes for the C/ C are located on the flanges
that protrude from the bottom of the unit housing.
8.3.3.2 Place a mark on the mounting surface at the top of the keyholes.
8.3.3.3 Remove the C/ C and drill a 3/32" (2.5 mm) hole at the mark
with a concrete-rated drill bit. Blow out the masonry dust from
the hole.
8.3.3.4 Insert a #10 lead masonry wall anchor into the top pilot holes.
Tap the anchors gently with a hammer until they are flush to the
mounting surface. Insert the screws, but do not tighten the
screws completely. Leave a 1/4" (6 mm) gap between the
mounting surface and screw heads.
NOTE: Use a heavyweight metal lead masonry anchor for mounting the
C/ C. o not use a lightweight or plastic anchor, as this may
provide insufficient support.
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8.3.3.5 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyholes.
8.3.3.6 Check for horizontal plumb with a level.
8.3.3.7 Mark two (2) mounting hole locations at the bottom of the C/ C.
8.3.3.8 Remove the C/ C and drill 3/32" (2.5 mm) holes at the drill
marks. Blow out the masonry dust from the hole and insert two
(2) anchors as in step 8.3.3.4.
8.3.3.9 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyhole.
8.3.3.10 The pre-drilled pilot holes should align with the mounting holes
at the bottom of the unit. Secure the controller with the
remaining two (2) screws.
8.3.3.11 Tighten all four (4) screws.
8.3.4 Mounting into Metal
8.3.4.1 Slotted mounting holes for the C/ C are located on the flanges
that protrude from the bottom of the unit housing.
8.3.4.2 Place a mark on the mounting surface at the top of the keyholes.
8.3.4.3 Remove the C/ C and drill a 3/32" (2.5 mm) hole at the mark
with a steel-rated drill bit. Blow out any metal dust from the hole.
8.3.4.4 Insert a #10 metal screw (1 5/8") into the top pilot holes. o not
tighten the screws completely. Leave a 1/4" (6 mm) gap between
the mounting surface and screw heads.
NOTE: Use a carbon-steel or carbon-steel self-tapping screw for
mounting the C/ C. o not use another type of screw, as this
may provide insufficient support.
8.3.4.5 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyholes.
8.3.4.6 Check for horizontal plumb with a level.
8.3.4.7 Mark two (2) mounting hole locations at the bottom of the C/ C.
8.3.4.8 Remove the C/ C and drill 3/32" (2.5 mm) holes at the drill
marks. Blow out any metal dust from the hole and insert two (2)
screws as in step 8.3.4.4.
8.3.4.9 Carefully align the keyholes on the C/ C with the screw heads.
Slide the C/ C down over the keyhole.
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8.3.4.10 The pre-drilled pilot holes should align with the mounting holes
at the bottom of the unit. Secure the controller with the
remaining two (2) screws.
8.3.4.11 Tighten all four (4) screws.
8.3.5 If mounting into any material other than above, please contact Nextek
Power Systems.
8.4 Grounding
8.4.1 The photovoltaic system grounding shall be installed per the
requirements of sections 690.41 through 690.47 of the National Electric
Code, ANSI/NPA 70, and is the responsibility of the installer. In addition,
all state and federal Occupational Safety and Health Administration
(OSHA) guidelines and regulations must be followed.
NOTE: Conductors identified by the color combination green/yellow shall
only be used for grounding conductors.
NOTE: The following ground symbol is used:
NOTE: No ground is required between the C/ C output and the load.
The C output shall not be grounded.
8.4.2 o not connect the Photovoltaic (PV) negative conductor to the ground
terminal. The C/ C includes an internal ground fault fuse through
which the negative is grounded.
8.4.2.1 The minimum size of the copper grounding wire should match
the current carrying conductors from the PV array to the C/ C.
See Step 8.5.4.1 for information on using a junction box to step
down wire size into the C/ C. Refer to Tables 8.1 and 8.2 in
section 8.5.6 for wire gauge sizes that can be used over certain
distances.
8.4.2.2 Ground may be bonded to the circuit board with 16-12 AWG
wire. Wire larger than that can be bonded to the ground stud on
the inside of the cover.
8.4.3 Ground Fault Currrent Interrupt Fuse
WARNING: Risk of Fire
Per NEC, O NOT CONNECT PV negative with ground at the C/ C
controller.
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20 Copyright 2013-2014 all rights reserved by Nextek Power Systems, Inc. in the United States and in other countries throughout the world.
Isolated DC to DC Converter Installation Manual
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