Nexans Euromold 156SA Surge Arrester

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This document provides information about surge arresters for protecting electrical equipment from high voltage surges. It describes the components, design, and technical specifications of the 156SA series of metal oxide varistor surge arresters for voltages up to 24 kV. Application, dimensions, ordering instructions are also included.

Technology

CABLE JOINTS, CABLE TERMINATIONS, CABLE GLANDS, CABLE CLEATS
FEEDER PILLARS, FUSE LINKS, ARC FLASH, CABLE ROLLERS, CUT-OUTS

11KV 33KV CABLE JOINTS & CABLE TERMINATIONS
FURSE EARTHING
www.cablejoints.co.uk
Thorne and Derrick UK
Tel 0044 191 490 1547 Fax 0044 191 477 5371
Tel 0044 117 977 4647 Fax 0044 117 9775582

156SA

INTERFACE A
SURGE ARRESTER
Up to 24 kV

Application

Technical characteristics

Surge arrester designed to
protect 12 and 24 kV class
components, including
transformers, equipment, cable
and accessories from high
voltage surges resulting from
lightning or switching.

• This surge arrester is a metal
oxide varistor surge arrester in
an elbow configuration.
• Each arrester is tested for
AC withstand and partial
discharge prior to leaving the
factory.

6/10 (12) kV
6.35/11 (12) kV
8.7/15 (17.5) kV
12/20 (24) kV
12.7/22 (24) kV

Design

1

Surge arrester comprising:
1. Bail restraint.
2. Conductive EPDM insert.
3. Type A - 250 A interface
as described by CENELEC
EN 50180 and 50181.
4. Pin contact.
5. Contact disc.
6. Copper shunt.
7. Metal oxide valve elements.
8. Aluminium spacer.
9. Steel cap.
10. Earth connection.
11. Insulating EPDM layer
moulded between the insert
and the jacket.
12. Conductive EPDM jacket.

2

3
4

5
6

12
7
11

5

8
6
9
10

Surge
arrester
type

Nominal
discharge
current
In (kA)

Rated
voltage
Ur
(kV)

Max. continuous
operating
voltage
Uc (kV)

Steep current
residual
voltage @ 5 kA
[1/20 µs] (kV)

Lightning current
residual
voltage @ 5 kA
[8/20 µs] (kV)

High current
impulse
withstand
(kA)

156SA-12
156SA-15
156SA-18
156SA-21
156SA-24

5
5
5
5
5

15
19
22
26
30

12.5
15.5
18.0
21.0
24.5

62.5
77.0
87.0
101.5
116.5

54.5
69.0
79.0
93.5
108.5

40
40
40
40
40

11

Typical application and
dimensions
415
195

220

156
131

K400RTPA
reducing tap plug

K400TE/G or
K400TB/G
connector

330

Surge arrester
156SA-24

Ordering instructions
To order the surge arrester,
specify the surge arrester type,
as described on previous page.
Example:
For a maximum continuous
operating voltage (rms) of 21 kV.
Order a 156SA-21 surge
arrester.

12

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