NEP PVG-4 User manual

USA
Address: 2570 N. First Street, Suite 200, San Jose, CA 95131
TEL: [phone]
Japan
Address: 812-0011 福岡市博多区博多駅前 3-10-24 藤井ビル 1F
TEL: [phone]
FAX: [phone]
China
Address: No.1 Anhe Rd Tsingtao Export Processing Zone, Tsingtao, China 266113
TEL: [phone]
FAX: [phone]
Email: [e-mail]
Web: http://www.northernep.com
http://www.nep-japan.com
http://www.micro-inverter.jp
Installation and Operation Manual
PVG-4
Rapid Shutdown Device

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COMPANY PROFILE
Northern Electric & Power Inc. (NEP) was founded in the United States and has
manufacturing and R&D facilities in China. The mission of the company is to develop
cutting-edge clean energy technologies and provide state-of-the-art solar inverter
products to its customers. The first round of investment to the company was US$20
Million, with a planned total investment of US$50 Million. The company is
headquartered in the city of Tsingtao, a major industrial center and trading port in
the northeastern China. The company campus occupies more than 18 acres in the
Tsingtao Export Processing Zone, and has more than 650,000 square feet building
space. The campus is planned to be connected through a micro smart grid demo
community and powered by electricity from solar, wind and micro turbines. Outside
China, the company has operation offices in Chicago, U.S. and Vancouver, Canada.
The technology founders of the company are well-known experts in the fields of
power electronics, automatic control, signal processing, and communications.
Each of the founders has multiple U.S. and world patents in their specialty areas.
They received Ph.D. degrees from top universities in North America, and each has
more than 10 years engineering and management experiences in leading U.S.
companies.
NEP has a complete product line of grid-tied solar inverters, including 180W~500W
micro inverters, 1.5kW~5kW single phase solar inverters, and 10kW~500kW
three-phase solar inverters. Field deployment results demonstrated high system
efficiency and reliability of NEP solar inverters.
NEP is committed to develop Clean, Reliable, Affordable and Efficient (CARE)
products for worldwide customers.

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1. INTRODUCTION
1.1 Prefix
Dear customer, thank you for choosing the PVG rapid shutdown devices. We hope you will find
our products meet your need for renewable energy. Meantime, we appreciate your feedback
regarding our products.
1.2 Standards Compliance
PVG rapid shutdown devices comply with the NEC 2014 and NEC 2017 article 690.12, and CEC
2015 section 64-218.
1.3 How to Use This Manual
This manual provides detailed product information and installation instructions for the PVG
rapid shutdown devices (RSD). Please read through this manual before installation and
operation.
WARNING: This indicates a situation where failure to follow instructions may be a
safety hazard or cause equipment malfunction. Use extreme caution and follow
instructions carefully.
1.4 Label
The label is located on the side of the inverter. The information on the label includes technical
data as well as type, firmware version and serial number of the device. Safety instructions on
the label are listed and explained below:
Danger!
The term “danger” describes an issue which, if ignored can cause
personal injury.
Attention!
With the term “attention” a circumstance is listed which may
cause property damage if disregarded.
Instructions for use!
Under “Instructions for Use“, it is pointed out that installation and
operating instructions are to be read
and understood before
installation or repair.
Caution, hot surface!
Under “Caution, hot surface”, it should be noted that surfaces of
equipment may be hot and create a burn hazard.
Special disposal instructions!
With “Note Separate Disposal”, it is pointed out that this product
may not be disposed of with normal garbage. An improperly
conducted disposal can lead to damage to the environment.
CE mark
The product complies with essential requirements of relevant
directives of EU
2. SAFETY INSTRUCTION
WARNING:
PLEASE READ THIS MANUAL BEFORE INSTALLATION. ANY DAMAGE TO THE PRODUCT DUE TO NOT
FOLLOWING THIS MANUAL IS NOT COVERED BY THE WARRANTEE.
ALL THE INSTALLATION SHOULD BE DONE BY CERTIFIED ELECTRICIAN.
BESIDES THE CABLE CONNECTORS, NOTHING INSIDE THE PRODUCT SHOULD BE MODIFIED.
ALL INSTALLATION SHOULD FOLLOW THE LOCAL ELECTRIC CODES.
WARNING:
WHENTHEPHOTOVOLTAICARRAY IS EXPOSED TOLIGHT, IT SUPPLIES A DC VOLTAGETOTHE PVG RSD.
3. FCC COMPLIANCE
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 instructions, may cause harmful interference
to radio communications. 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 off
and on, 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 the 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.
Changes or modifications not expressly approved by the party responsible for
compliance may void the user’s authority to operate the equipment.
4. INSTALLATION
WARNING: BE AWARE THAT INSTALLATION OF THIS EQUIPMENT INCLUDES RISK OF ELECTRIC
SHOCK.

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PVG-4 System Diagram

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Connecting PVG-C controller to a BDG-256 gateway (Option)
A BDG-256 gateway can connect one or multiple PVG-C controllers, and upload the monitoring
data from PVG to NEPVIEWER monitoring website. For details of BDG-256 gateway and
NEPVIEWER, please refer to the user manual of BDG-256 gateway.
Connecng BDG-256 gateway to PVG-C is oponal, and shall not affect the rapid shutdown
funcon of PVG-C and PVG-4.
WARNING: ONE PVG-C CAN ONLY MONITOR ONE CHANNEL OF PV PANELS (ONE MPPT).
5. OPERATING INSTRUCTIONS
WARNING: PVG RAPID SHUTDOWN SYSTEM SHALL BE CHECKED REGULARLY TO MAKE SURE IT
FUNCTIONS PROPERLY. TEST SHALL BE DONE AT DAYTIME, AND BY MANULLAY PUSH DOWN THE
EMERGENCY BUTTON. SOLID GREEN LIGHT SHALL BE ON WITHIN 10 SECONDS AFTER THE EMERGENCY
BUTTON IS PUSHED.
WARNING: IN ORDER TO MAKE THE RAPID SHUTDOWN FUNCTION PROPERLY, THE VOLTAGE ON THE DC
BUS CAPACITOR OF THE STRING INVERTER SHALL BE REDUCED TO LESS THAN 30Vdc WITHIN 10 SECONDS,
USING ONE OF THE FOLLOWING APPROACHES:
1) A DC SWITCH ON THE DC INPUT OF THE STRING INVERTER IS SWITCHED OFF WITHIN 10 SECONDS TO
DISCONNECT THE DC BUS OF THE INVERTER
2) IF THE INVERTER DC BUS CANNOT BE DISCONNECTED, A “BLEEDING” RESISTOR SHALL BE
CONNECTED ACROSS THE DC INPUTS OF THE STRING INVERTER AND DISSIPATE THE ENERGY ON THE
DC BUS WITHIN 10 SECONDS
PVG is powered by the PV panel. Thus the rapid shutdown is operable during daytime when
the PV panel is energized. Rapid shutdown can be activated by one of the following two
operations:
Option-1 Press the E-STOP button on the PVG controller (PVG-C)
Option-2 Disconnect AC adapter to the PVG-C remote controller
Flashing LED on the PVG-1/2/3/4 indicates the status of the switch inside the PVG.
LED on PVG-4
-
Status
OFF for 5 seconds, ON for 1 second
PVG switch is connected
OFF for 1 second, ON for 1 second
PVG switch is disconnected
OFF for 2 second, ON for 1 second
PVG status error
There are two LEDs on the PVG-C. RED LED flashing indicates the
controller is powered, while the green LED on PVG-C indicates the DC voltage is safe.
Green LED on PVG-C
Status
OFF
PV array DC voltage is above 30Vdc
ON
PV array DC voltage is below 30Vdc
To re-connect the PV panels, a re-connection command can be send to each PVG by
the following steps:
Step-1: Plug AC adapter into the PVG-C
Step-2: Release the E-Stop button on PVG-C
This operation can only be done at day time since the PVG is powered by PV panels. In
most cases, all panels are re-connected immediately following the steps above.
6. PV PANEL MONITORING USING BDG-256
Using BDG-256 gateway, DC current, voltage, power, daily energy, and
temperature of each PV panel can be monitored using MICROVIEWER
locally, or NEPVIEWER remotely. BDG-256 usage should refer to the
BDG-256 gateway manual. Connection of BDG-256 and PVG-C is as
follows:

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7. SPECIFICATION
MODEL PVG-n
INPUT(DC)
Max Recommended PV Power
450(*n)
Max DC Open Circuit Voltage
80 per input
Max DC Input Current (Adc)
14
OUTPUT(DC)
Maximum Output Power (Wp)
0 ~ 450(*n)
Maximum Output Current
14
Maximum Output Voltage
0 ~ Voc(*n)
SYSTEM
Maximum System Voltage
600/1000/1500
Maximum Series Fuse Rating
15
PROTECTION
Protection Degree
NEMA-6
Ambient Temperature
-40C——+85C
Display
LED LIGHT
Communications
DC Power Line
Product Safety Compliance NEC 2014/2017 690.12
8. Mark
The following label shall be permanently placed close to the PVG-C remote controller.