gefran GPC 40-600A Use And Installation Manual page 42

3.6.6. Connection example for two-phase GPC (2PH) for a three-phase star load without
neutral with transformer
L1
L2
L3
FUSE
FUSE
GG
(*)
GG FUSE
2/T1
DELTA
-
DELTA
transformer
R3 R2
(*) = Connection only required with Vload input option (control option =3)
FUSE
FUSE FUSE
GG
1/L1 1/L1
GPC-E1 GPC-M
2/T1
PE
STAR
-
STAR
transformer
R1
81900A "MHW_GPC-40/600A"_03-2021_ENG_page 40
Id
FUSE
1/L1
L1
V
GPC-E1
FUSE
2/T1
1/L1
L2
GPC-M
FUSE
2/T1
1/L1
L3
P
Id =
ƞ × √3 × V × cos φ
FIRING MODE ZC, BF
HB DIAGNOSTICS
Total load break
AVAILABLE
Ultra-rapid fuse only required for controls
Fuse
with option Fuse = 0
GG fuse
See fuse sections
Symmetric transformers only
Y - Y
Δ - Δ
Is
V
load
P
Is =
√3 × Vload × cosφ
CAUTION
(*) = With control option 3
the Vload input cannot
be connected to the
secondary of the transformer
GPC - DIP switch configuration
DIP 1 DIP 2 DIP 3 DIP 4
ON OFF OFF OFF
V Phase-to-phase voltage
P
Total power
Vload Voltage on secondary (load)
Current in primary
Id
Is Current in secondary
Transformer output
ƞ
(typical 0.9) if resistive load cos φ=1
R1
R2
R3
DIP 5
ON