| Table | |
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Overload |
| Threshold for generator overload (in % of Nominal power) |
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| Step: 1% of Nominal power; Range: 0 − 200% |
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Overload Wrn |
| Threshold for generator overload warning (in % of Nominal power) |
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| Step: 1% of Nominal power; Range: 0 − 200% |
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Overload del |
| Delay for generator overload alarm. Step: 0.1s; Range: 0 − 60.0 s |
Ishort |
| Shutdown occurs when short circuit limit Ishort limit is reached. |
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| Step: 1 % of Nominal current; Range: 100 − 500 % |
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2Inom del |
| IDMT curve shape selection. 2Inom del is Reaction time of IDMT |
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| protection for 200% overcurrent Igen = 2* Nominal current. |
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| Step: 0,1 s; Range: 0,1 − 20 s |
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| IDMT is “very inverse” generator over current protection. Reaction time is |
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| not constant but depends on generator over current level according |
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| following formula. Reaction time is limited up to 900 sec = 15 minutes. |
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| IDMT protection is not active for Reaction time values longer than 15 |
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| minutes. |
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| 2lnom del * Nomin current |
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| Reaction Time + lgen * Nomin current |
Curr unbal |
| Threshold for generator current asymmetry (unbalance). |
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| Step: 1% of Nominal current; Range: 1 − 100% of Nominal current |
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Curr unbal del |
| Delay for generator current assymetry. Step: 0.1 s; Range: 0 − 60.0 s |
Gen >V |
| Shutdown level for generator overvoltage. All three phases are checked. |
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| Maximum out of three is used. |
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| Step: 1% of Nominal voltage; Range: Gen >V Wrn −200% |
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Gen >V Wrn |
| Warning level for generator overvoltage. All three phases are checked. |
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| Maximum out of three is used. |
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| Step: 1% of Nominal voltage; Range: Gen <V Wrn − Gen >V |
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Gen <V Wrn |
| Warning level for generator under voltage. All three phases are checked. |
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| Minimum out of three is used. |
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| Step: 1% of Nominal voltage; Range: Gen <V − Gen >V Wrn |
Gen <V |
| Shutdown level for generator under voltage. All three phases are checked. |
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| Minimum out of three is used. |
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| Step: 1% of Nominal voltage; Range: 0% − Gen <V Wrn |
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Gen V del |
| Delay for generator under voltage and over voltage alarm |
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| Step: 0.1s; Range: 0 − 60 s |
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Volt unbal |
| Threshold for generator voltage unbalance alarm. |
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| Step: 1% of Nominal voltage; Range: 0 − 100% of Nominal voltage |
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Volt unbal del |
| Delay for generator voltage unbalance alarm. |
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| Step: 0.1s; Range: 0 − 60.0 s |
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Gen >f |
| Shutdown level for generator over frequency. |
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| Step: 0.1% of Nominal frequency; Range: Gen > Wrn − 200.0% |
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Gen >f Wrn |
| Warning level for generator over frequency. |
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| Step: 0.1% of Nominal frequency; Range: Gen <f Wrn − Gen >V |
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Gen <f |
| Shutdown level for generator under frequency. |
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| Step: 0.1% of Nominal frequency; Range: 0.0 − Gen <f Wrn |
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Gen <f Wrn |
| Warning level for generator under frequency. |
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| Step: 0.1% of Nominal frequency; Range: Gen <f − Gen >f Wrn |
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Gen f del |
| Delay for generator under frequency and over frequency alarm. |
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| Step: 0.1s; Range: 0 − 60.0 s |
MN2417 | Operation |
