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A-Z ROOF SPD2 T1+T2 2+3 1010 VDC

Due to the regulatory obligation to place class 1 surge arresters near the downfall of string wires into the building, we are introducing a new model line of SPD units for mounting on the supporting structure of the photovoltaic panels themselves.

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PRODUCT DESCRIPTION

PDF Product description

Due to the regulatory obligation to place class 1 surge arresters near the downfall of string wires into the building, we are introducing a new model line of SPD units for mounting on the supporting structure of the photovoltaic panels themselves.

The actual construction, taking into account weather conditions and the method of assembly, is made of aluminum alloy (the same material as the supporting profiles of PV panels - there is no risk of electrochemical corrosion) with hermetically sealed internal circuits in polyurethane material with an inert filler that suppresses combustion.

The unit is designed as a through-type unit for easy implementation into a string - both poles of the string are connected to the unit and both of them also exit. The connection is made with classic MC4 connectors (with an integrated fuse at the input) and wires with a cross-section of 6 mm 2 (in some versions even 10 mm 2 ) with double insulation and color coding.

The connection of the PE conductor or the connection with the LPS elements is solved on the box chassis itself using an M10 (M8) screw through a pressed-in eye on a stranded conductor >16 mm 2 or directly via a T-screw by connecting to the supporting structure/LPS downpipe, or in combination.

The SPD unit itself is of class T1 + T2, which means that due to the above-standard leakage resistance (12/25 kA), it can also be applied to centers with less than 4 down conductors (according to ČSN EN 51643-32).

Due to the specific design and location, it is necessary to measure the residual current at the maximum operating voltage after each interruption of the integrated fuse (due to the action of the SPD).

If the value is higher than the maximum value specified by the manufacturer, the entire SPD module must be replaced. An indication of a blown fuse is the absence of voltage on the string circuit after the SPD module.

Property Value
Maximum operating DC voltage between L+ and L- (L+- and PE) 1010 V
I n (8/20 μs)

L+ or L- /PE 20 kA

L+- /PE 40 kA

I max (8/20 μs)

L+ or L- /PE 50 kA

L+- /PE 100 kA

I mp (10/350 μs)

L+ or L- /PE 12.5 kA

L+- /PE 25 kA

Dimensions 234x126x34.4mm
Connecting wires

Length: approx. 25 cm;

Cross-section: 6/10 mm 2 ;

Connectors: MC4 male/female with integrated fuse

Location Outdoor - installation on the supporting system of PV panels
Rated short-circuit current I scpv 10 kA
External disconnectors fuse integrated in MC4 < 30 A at input
Indication of SPD effect output voltage drop to 0 V
Residual current max 50 μA
Classification according to ČSN EN 61643-11 ed. 2 and ČSN EN 61643-31 T1+T2
Suitable for network DC
Rated load current I L

Type 1 - 30 A

Type 2 - 30 A

Type 3 - 80 A

Short circuit resistance I SCPV

10 kA

Voltage protection level at In U P

< 2.3 kV

Response time t A

< 25 ns

Case material

Aluminum alloy

Degree of protection of the cover

IP67

Working temperature ϑ

-40 ÷ 85 °C

Humidity range R H

0 ÷ 100%

Cross section of the connector wire

Cross-section: 6 mm 2 / 10 mm 2 (according to design)

Earth terminal tightening torque

According to the M8/10 screw used

Method of assembly

FV Alu profile

Working position

Any

SPD fault mode

OCFM

Interchangeable design

NO

Service life

> 15 years

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