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3.6.15.
Connection example for three-phase GPC (3PH) control option 4 for a three-phase
star load without neutral with transformer
L1
L2
L3
FUSE
1/L1
GPC-E2
FUSE
GG
2/T1
SYMMETRIC
and
ASYMMETRIC
transformers
TA3
R3
R2
FUSE
FUSE
TA1, TA2, TA3
Input (J5)
J5
1/L1
1/L1
GPC-E1
GPC-M
2/T1
2/T1
PE
TA2
TA1 (to J5)
R1
CAUTION
Connections for control
option 4
(Vload inputs + external CTs)
81900A "MHW_GPC-40/600A"_03-2021_ENG_page 49
GPC-M
Id
FUSE
1/L1
L1
to TA3
to TA2
V
to TA1
GPC-E1
FUSE
1/L1
L2
GPC-E2
FUSE
1/L1
L3
Id =
ƞ × √3 × V × cosφ
FIRING MODE
HB DIAGNOSTICS
AVAILABLE
Fuse
GG Fuse
2/T1
SYMMETRIC
and
ASYMMETRIC
transformers
2/T1
2/T1
P
Is =
√3 × Vload × cos φ
GPC - DIP switch configuration
DIP 1
DIP 2
ON
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
ZC, PA BF (bF.Cy ≥ 2)
Total load break for each individual branch.
For PA mode HB diagnostics active with P>30%.
Ultra-rapid fuse only required for controls with
option Fuse = 0
See fuse sections
Is
R1
R2
V
load
R3
P
DIP 3
DIP 4
DIP 5
OFF
ON
ON
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