MEC 2 MICROPROCESSOR ENGINE/GENERATOR CONTROLLER
PM056 Rev 6 05/10/15 Thomson Technology
7
GRD
MEC 2
FIGURE #1
3Ø, 4W 208/380/480/600VAC DIRECT SENSING
SOLIDLY GROUNDED NEUTRAL SYSTEM
VOLTAGE INPUTS
600VAC L-L, 347VAC L-N
380VAC L-L, 220VAC L-N
480VAC L-L, 277VAC L-N
208VAC L-L, 120VAC L-N
VA
VB
VC
VN
GRD
BACN
GEN.
GRD
A
B
C
N
GRD
MEC 2
FIGURE #2
1Ø, 3W 120/240VAC DIRECT SENSING
SOLIDLY GROUNDED NEUTRAL SYSTEM
VOLTAGE INPUTS
240VAC L-L, 120VAC L-N
Note:
L1 and L2 phase
voltages must be 120Vac
when referenced to common
neutral. (Delta connected
generators required PTs as per
figure#3 & no phase C PT)
VA
VB
VC
VN
GRD
L2L1 N
GEN.
GRD
L1
L2
N
No Connection
GRD
MEC 2
FIGURE #3
3Ø, 4W WYE PT's
SECONDARY PT VOLTAGE
208VAC L-L, 120VAC L-N
120VAC L-L, 69VAC L-N
VA
VB
VC
VN
GRD
BACN
GEN.
N
120
120
120
GRD
A
B
C
GRD
MEC 2
FIGURE #4
3Ø, 3W DELTA PT's
SECONDARY PT VOLTAGE
120VAC L-L
(NO NEUTRAL)
VA
VB
VC
VN
GRD
120
120
GRD
BAC
GEN.
A
B
C
N
No Connection
G:\ENGINEER\PRODUCTS\MEC2\MEC2_08.VSD REV. 1 02/01/23
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