Installation Guide

10
Figure 2. SD2500 de-rating curve
Figure 3. SD3500 de-rating curve
Transfer-Time Table
Mode / Transfer Switch
ATS
*STS
Haphazard
Inverter to utility AC: 8~10ms.;
Utility AC to inverter: 16~50ms.
Frequency is synchronized: < 4ms.;
Frequency is not synchronized:
Inverter to utility AC: < 4ms.;
Utility AC to inverter: 16~50ms.
Normal
Inverter to utility AC: 8~10ms.;
Utility AC to inverter: 16~25ms.
< 4ms
Exacting
Inverter to utility AC: 8~10ms.;
Utility AC to inverter: 16~50ms.
Inverter to utility AC: < 4ms.;
Utility AC to inverter: 16~50ms.
Online
Inverter to utility AC: 8~10ms.;
Utility AC to inverter: 16~25ms.
< 4ms
* Only applicable on SD2500 / SD3500 Table 1. SD series transfer-time