Specifications
15.1.4Grounding
Refer to 5.3 - System Grounding for specifications and instructions regarding grounding.
15.1.5Electrical Requirements
Table 18 Electrical requirements
Item | Requirement | |
|
| |
Maximum Continuous Current | 100, 250, 400, 600, 800, 1000 amps | |
|
| |
Load Power Factor Range | 0.75 to 1.0, leading or lagging | |
|
| |
Load Crest Factor | Up to 3.5 | |
|
| |
Source Voltage Distortion | Up to 10% THD with notches and ringing transients | |
|
| |
| 125% for 30 minutes | |
|
| |
Overload Capability | 125% for 10 minutes | |
| ||
150% for 2 minutes | ||
| ||
|
| |
| 500% for 0.25 sec. | |
|
|
Table 19 Unit short circuit withstand capability
Unit Voltage | Unit Amps | Withstand Capability |
|
|
|
| 125kA | |
|
| |
150kA | ||
|
|
|
| 100kA | |
|
|
|
| 100kA | |
|
| |
100kA | ||
|
|
|
| 65kA | |
|
|
|
| 50kA | |
600V |
|
|
25kA | ||
|
|
|
| 25kA | |
|
|
|
15.1.6Input Surge Suppression
The Liebert STS2 is equipped with transient voltage surge suppression on each input for maximum surge suppression. The surge suppression is capable of protecting the Liebert STS2 from operating outside of tolerances due to surges as defined by IEC
15.1.7Response Time
A dual level fast/slow transfer threshold is used for under voltage detection to allow the Liebert STS2 to be compatible with UPSs and generators. The voltage thresholds and the slow transfer delay time is
The over voltage detection uses a single threshold, with programmable level and delay time. See User Settings on page 89 for instructions on configuring these settings.
15.1.8Environmental Requirements
See 3.0 - Location Considerations for details concerning environmental requirements for the Liebert STS2.
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