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 Lightning & Surge Protection
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Why Have Surge Protection

Photovoltaic, wind and hydroelectric systems usually have long runs of exposed wire that can pick up surges from lightning, even if the lightning strike is not nearby. These power surges can damage sensitive electronic components in meters, charge controls and inverters. Surges can also damage telephone, audio and video equipment connected to the power system. It is a good idea to install surge protection on all incoming wires in the system, including incoming PV, wind or hydroelectric power lines, AC generator lines, telephone and antenna leads. Proper grounding is absolutely necessary for lightning protection to be effective. In the event of a direct strike, damage may occur, even with surge protectors installed.
 
 
Delta Lightning Arrestors

The Delta Lightning Arrestors have a max current rating of 60,000 amps and 2,000 joules per line. Response time is 25ns to clamp 50,000 amps. Mounts easily in a 1/2" knockout.

Install the DC version for surge protection on wires coming from a PV array, DC wind generator or DC hydroelectric turbine. Use the 600 VDC unit for high-voltage grid-tie PV arrays. Lightening protection can be installed in a combiner box, DC load center or intertie inverter.

The AC versions can be mounted in your AC load-center to protect 120/240 VAC equipment and on AC wiring running outside of the building, to generators, pumps or outbuildings. All units are waterproof.

Delta Model

Description

 PART NUMBER

LIST PRICE

OUR PRICE

 Purchase
LA302DC Arrestor for up to 300 VDC

053-04115

$40

 $38
LA602DC Arrestor for up to 600 VDC

053-04109

$44

 $42
LA302R Arrestor for up to 300 VAC

053-04112

$40

 $38
LA303R Arrestor for up to 300 VAC 3-Phase

053-04118

$50

 $48
LA603R Arrestor for up to 600 VAC 3-Phase

053-04120

$72

 $69
Mounting Bracket for surge Arrestors

053-04138

 $3 $3

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PolyPhaser DC Lightning Protectors

PolyPhaser Lightning Protectors set the standard for the lightning protection industry. They are the product of choice in the telecom industry.

Designed to protect PWM switching and relay type charge controls, these units can handle the high voltage of open circuit arrays and will not cause power robbing voltage drop.

Models are available for 12 and 24 volt negative ground systems and 48 volt negative and positive ground systems. Maximum continuous current 50 amps.

 

 

Model

System Voltage

Description

 PART NUMBER

OUR PRICE

 Purchase

IS17NG

12

17V Negative Ground

053-04165

$225

IS35NG

24

35V Negative Ground

053-04168

$225

IS60NG

48

60V Negative Ground

053-04171

$225

IS60PG

48

60V Positive Ground

053-04174

$225

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Citel Surge Protection Products
Citel PV surge protectors are DIN mount and are ideal for placement inside combiner boxes.
DS210DC Off-Grid Surge Arrestor
The Citel DS210DC series is designed to protect 12V, 24V, 48V and 150V DC power lines for an off-grid PV system. The surge protectors protect the charge controller and other system electronics. DS210DC automatically reset after each lightning surge or electrical transient.

These surge arrestors clamp at much lower voltage than Delta surge arrestors at left so they offer much better protection for charge controllers and inverters in low-voltage DC systems.
 
DS50PV Grid-Tie Surge Arrestor
The DS50PV is designed to protect the solar panel array at the solar PV array combiner box for a utility-interactive PV system. The DS50PV is designed to withstand 40kA (8/20us) induced transient surges and is designed with replaceable modules.

Use the DS50PV-500 for systems with inverters that have an upper limit of 500 volts. Use the DS50PV-800 for inverters that allow arrays over 500 VDC. For use with grounded arrays.
 
DS60PV Grid-Tie Surge Arrestor
DS60PV are Type 1 heavy duty surge protectors, recommended when a direct lightning strike is possible on the installation. They are available in 500- and 1000-VDC operating voltages. The use of Type 1 surge protector is recommended at both ends of the DC power supply line (solar panel side and inverter/converter side).

The DS60PV is made with a monobloc enclosure and mounts on DIN rail.

Citel Surge Protection Products
Citel model Nominal
volts		 Maximum
volts		 Discharge
current		 Width
in (mm)		 PART NUMBER LIST PRICE OUR PRICE Purchase
DS210-12DC 12 15 VDC 1 kA 0.7 (18) 053-04201 $52 $49.75
DS210-24DC 24 30  VDC 1 kA 0.7 (18) 053-04203 $52 $49.75
DS210-48DC 48 56  VDC 1 kA 0.7 (18) 053-04205 $52 $49.75
DS210-95DC 95 100  VDC 2 kA 0.7 (18) 053-04207 $52 $49.75
DS210-130DC 130 150  VDC 2 kA 0.7 (18) 053-04209 $52 $49.75
DS50PV-600 600 690  VDC 20 kA 1.4 (36) 053-04219 $128 $125
DS60PV-500 500 550  VDC 40 kA 2.8 (72) 053-04224 $168 $160
DS60PV-1000 1000 1000  VDC 40 kA 2.8 (72) 053-04226 $279 $263

DS240-120

 120 150 VAC 20 kA 0.7 (18) 053-04210 $98 $96

DS240-120R

Replacement module for above

0.7 (18)

053-04211

 $40 $39

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This page designed and maintained by Terry R. Wolff
 Last up-dated on May 09, 2012

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