Page 13
Copyright Enphase Energy Inc. 2008
Release 1.4
M175-24-240-S Micro-Inverter Operating Parameters
Topic
Unit
Min
Typical
Max
and duration
AC Voltage trip limit accuracy
%
"
2.5
Frequency trip limit accuracy
Hz
±0.1
Trip time accuracy
ms
±33
Miscellaneous Operating Parameters
Maximum inverters per AC branch
circuit
1
16
Peak inverter efficiency
%
95.0
CEC weighted efficiency
%
94.5
Nominal MPP tracking efficiency
%
99.6
Total Harmonic Distortion
%
2.5
5
Operating temperature range
!
C
-25
65
Night Tare Loss
mW
580
Storage temperature range
!
C
-25
65
Weight
Lbs
< 4.0
Features
Dimensions (approximate)
11” x 5 ¾” x 1 ½”
Enclosure environmental rating
NEMA6
Cooling
Convective – no fan
Communication
Powerline
Standard warranty term
10 years
Compliance
UL1741, IEEE1547, FCC Part 15 Class B
Voltage and Frequency Limits for Utility Interaction
Condition
Simulated utility source
Maximum time
(sec) (cycles) at
60 Hz before
cessation of
current to the
simulated utility
Voltage (V)
Frequency (Hz)
A
< 0.50 V
Typical
Rated
0.16
B
0.50 V
Typical
!
V < 0.88
V
Typical
Rated
2
C
1.10 V
Typical
< V < 1.20
V
Typical
Rated
1
D
1.20 V
Typical
!
V
Rated
0.16
E
Rated
f > 60.5
0.16
F
Rated
f < (59.8 – 57.0)
0.16 – 300
G
Rated
f < 57.0
0.16
