78
EN
SUNSYS PCS2 IM UL Power Conversion System and Storage with Islanding Mode from 33 to 200 kVA - Ref.: IOMSUNPCXX07-EN 01
15. UL1741SA: HOW TO CONFIGURE GRID SUPPORT
FUNCTIONS
15.1 INTRODUCTION
Supplement SA to UL1741 standard covers grid support functions that are required to grid support utility interactive
inverters and converters.
Installers are responsible for setting parameters according to the prescriptions defined in the local utility SRD(s)
(Source Requirement Document). The wide range of parameter programmability covers the California Rule 21 and
HECO Rule 14H.
NOTE: for transformer based models (PCS
2
IM 33-66-100TR), formal compliance to UL1741SA
standard requires 3-wire output only (w/o neutral connection), while operating in grid-tied mode.
Contact Socomec for further information.
15.2 TRIP THRESHOLDS
MENU > SETTINGS > PCS SETTINGS > AC INTERFACE PROTECION
Voltage and frequency trip thresholds can be set following the table below.
Name of
parameter
group
Name of
parameter
Default
value
Programmable
range
Description
IP - VOLTAGE RANGE
UV3
50%
5 ÷ 100
Absolute minimum voltage admitted %Vn
UV2
70%
5 ÷ 100
Intermediate minimum voltage admitted %Vn
UV1
88%
5 ÷ 100
Minimum voltage admitted %Vn
OV1
110%
100 ÷ 120
Maximum voltage admitted %Vn
OV2
120%
100 ÷ 120
Absolute maximum voltage admitted %Vn
IP - VOLTAGE TIMINGS
TimeOut UV3
1.50 s
0,01 ÷ 300
Trip time under UV3 voltage thr.
TimeOut UV2
11.00 s
0,01 ÷ 300
Trip time under UV2 voltage thr.
TimeOut UV1
21.00 s
0,01 ÷ 300
Trip time under UV1 voltage thr.
TimeOut OV1
13.00 s
0,01 ÷ 300
Trip time over OV1 voltage thr.
TimeOut OV2
0.16 s
0,01 ÷ 300
Trip time over OV2 voltage thr.
IP - FREQUENCY RANGE
UF2
57.0 Hz
53,0 ÷ 60,0
Absolute minimum frequency admitted %fn
UF1
58.5 Hz
53,0 ÷ 60,0
Minimum frequency admitted %fn
OF1
60.5 Hz
60,0 ÷ 65,0
Maximum frequency admitted %fn
OF2
62.0 Hz
60,0 ÷ 65,0
Absolute maximum frequency admitted %fn
IP - FREQUENCY TIMINGS
TimeOut UF2
0.16 s
0,01 ÷ 300
Trip time under UF2 frequency thr.
TimeOut UF1
300.00 s 0,01 ÷ 300
Trip time under UF1 frequency thr.
TimeOut OF1
300.00 s 0,01 ÷ 300
Trip time over OF1 frequency thr.
TimeOut OF2
0.16 s
0,01 ÷ 300
Trip time over OF2 frequency thr.