Photo Voltaic Power Generation System

A photovoltaic power generation technology that converts solar energy into electrical energy. Introducing Panasonic's relays to support solar cells (solar panels), solar invertor and storage batteries behind the scenes to achieve stable electricity supply.

Photovoltaic Power Generation System

Recommended products

HE-V
HE-V
For cutoff of solar strings
Programmable Display
Programmable Display
エEco-POWER METER
Eco-POWER METER
Current Transformer (CT)
Current Transformer (CT)
*Measuring and displaying power generated, sold, and purchased
HE-N
HE PV
HE PV
HE PV
HE-S
HE-S
LF-G
LF-G
• For AC safety cutoff
• For operation in stand alone mode
AQZ
AQZ
For electrical shock
prevention and bypass
(efciency improvement)
EP
EP
For DC safety cutoff

[Junction box]

Inverter

Power
distributor

Load

Grid

Stand
alone

[Power conditioner]

Storage battery

• Battery charge/discharge switching
• For DC safety cutoff
For inrush current prevention
AQ-A EP HE-V
AQ-A EP HE-Vリレー

Recommended products (AC side)

HE PV
HE PV
HE-S ※
HE-S
LF-G
LF-G
Programmable Display
Programmable Display
Eco-POWER METER
Eco-POWER METER
Current Transformer (CT)
Current Transformer (CT)

Inverter

Power
distributor

Load

Grid

Stand alone

* When using HE-S relay.

*Use one 2a1b type
(creation of contact welding monitoring circuit is possible).
Recommended
relay

For Safety Cutoff on the AC side
Relays are used for safety cutoff on the grid (power network). The relay must cutoff the circuit to prevent abnormal currents that occur from affecting the commercial power supply. Power relays are required as safety measures to protect the power supply system.
For operation in stand-alone mode
Relay contacts will be ON during a power outage and use of the stand-alone function is possible. The relays are used for stand-alone mode.
Eco-POWER METERs/Programmable Displays
These are used for displaying the amount of sold/purchased power of a photovoltaic power generation system and power generated by a power conditioner. Photovoltaic power generation systems and fuel cell systems linked to storage batteries require surveillance of reverse power (tidal current) to grids. Equipped with a fine current detection function, Eco-POWER METERs are ideal for reverse power (tidal current) surveillance.

Recommended products (DC side)

For Solar strings
HE-V
HE-V
For Junction box connectors
AQZ PhotoMOS
AQZ
Recommended
relay
HE-V (2a 20A 1,000V DC*)
High-voltage cutoff relay capable of simultaneously cutting off the positive (+) and negative (-) terminals by serially connecting the 1 Form A contact. Up to 1,000V DC cutoff

*1,000 V DC is the maximum allowable voltage when each 1 Form A contact is connected in series. The rating is 800 V DC.

●When something shades the solar panels or a defect occurs, the total power generation efciency of the system decreases. In such cases, the total power generation efciency can be maintained by bypassing low-efciency panels or cutting off strings using relays.
●In case of a disaster, such as re, system safety can be maintained by shorting each solar panel. (E.g. electrical shock prevention of reghters)
●Remote control is possible for maintenance work, reducing maintenance costs.

Recommended
relay
AQZ PhotoMOS(1a 10A 60V DC)
PhotoMOS capable of frequent switching, improving system reliability

For Junction boxes and Power conditioners
EP
EP

●In case of a disaster, such as re, system safety can be maintained by cutting off the DC line.
●Remote control is possible for maintenance work, reducing maintenance costs.
●Large current cuttoff possible during malfunction when connecting storage battery. (80 to 300A type)

Recommended
relay
EP (1a 10A∼300A 1,000V DC*)
High-voltage cutoff relay with capsule contact construction, which provide high reliability

*1,000 V DC is the maximum allowable voltage. The rating is 400 V DC.


Recommended Materials

SERIES CATALOG Title Language File size Update
PMOS_SSR_Selection
Specifications are subject to change without notice.
EN 2.7MB November 4, 2020
APPLICATION EXAMPLES Title Language File size Update
Panasonic Products for Energy Management
1st edition
EN 6.0MB November 30, 2017