3 product description, 1 structure, 2 principle of operation – VEGA B61-300 FI User Manual

Page 6: 3product description, Out in

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background image

3

Product description

3

.1 Structure

The scope of delivery encompasses:

l

Overvoltage arrester B61-300 FI

l

Documentation

-

this operating instructions manual

The following illustration shows the configuration of the overvoltage
arrester B61-300 FI:

T

yp B61 - 300 FI

OUT

IN

IP 20

m

a

x.

3

0

0

V

A

C

/1

6

A

L1

N

L1

N

4

1

2

3

PE

PE

Fig. 1: Structure of B61-300 FI

1

Terminals Out (protected side)

2

Screw for carrier rail fastening

3

Terminals In (unprotected side)

4

Type label

3

.2 Principle of operation

Voltage surges can be caused by indirect atmospheric discharges
(lightning strokes) or switching operations in the supply network.
Further causes can be inductive or capacitive couplings from other
electrical systems. Voltage peaks (transients) must be expected
especially when long power supply and signal cables are used.

Scope of delivery

Constituent parts

Application area

6

Overvoltage arrester • B61-300 FI

3 Product description

40489

-EN

-110616

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