Megger INGVAR, Руководство пользователя

Страница: 29 / 72

BH0654BE ZP-BH05E 29
6 HOW TO INSTALL INGVAR
Calculate the impedance
Number
of cables Total cross section
area Impedance, cables twisted 1)
(mΩ)
Max. current in
20 sec. Max. continuous
current Weight (total set)
1 pair 120 mm
2
(1 x 120) (L x 0.43) + 0.1 1 600 A 350 A (L x 2.7) + 1.9 kg
2 pairs 240 mm
2
(2 x 120) (L x 0.22) + 0.1 3 200 A 700 A (L x 5.4) + 1.9 kg
3 pairs 360 mm 2 (3 x 120) (L x 0.14) + 0.1 4 800 A 1 050 A (L x 8.1) + 1.9 kg
1) Impedance can be up to 2.5 times higher if the cables are running close together but not twisted and up to 4 times higher if they are 1
meter apart.
Example, customised Multi-cable sets, length 2 x 5.0 m
Number
of cables Cross section area Impedance
cables twisted
(mΩ)
Impedance ca-
bles not twisted
(mΩ) Impedance ca-
bles 1 m apart
(mΩ) Max. current in
20 sec. Max. con-
tinuous
current Weight
(total
set)
1 pair 120 mm
2
(1 x 120) 2.2 < 5.5 < 8.8 1 600 A 350 A 15.4 kg
2 pairs 240 mm
2
(2 x 120) 1.2 < 3.0 < 4.8 3 200 A 700 A 28.9 kg
3 pairs 360 mm
2
(3 x 120) 0.8 < 2.0 < 3.2 4 800 A 1 050 A 42.4 kg
Standard 2 X 5 m (single pair) cable set with clamps)
Cross section
area Impedance
cables twisted
(mΩ) Impedance ca-
bles not twisted
(mΩ) Impedance ca-
bles 1 m apart
(mΩ) Max. current
in 20 sec. Max.
continuous
current Weight
(total
set) Article
number
120 mm
2
(1 x 120) 2.2 < 5.5 < 8.8 1 600 A 350 A 15.2 kg GA-12052