Sync check parameters typical settings regions modify for particular requirements rotating machines bus to bus parameter typical value voltage difference 10 15 v phase slip angle 0 30 slip.
Sync check relay settings.
In the design of electrical power systems the ansi standard device numbers ansi ieee standard c37 2 standard for electrical power system device function numbers acronyms and contact designations identifies the features of a protective device such as a relay or circuit breaker these types of devices protect electrical systems and components from damage when an unwanted event occurs such.
Then sync check verifies that this angle is less than the front panel phase angle selector setting.
Now to make the setting of system split go to menu system sync and set your values here.
The proposed default angles are 5 degrees advance and 5 degrees late.
The volt free relay contacts change state when the voltage level phase relationship and frequency are within the selected synchronising limits.
Synd connection diagram function diagram 55 mm 75 mm 100 mm a1 t 4 8 6 sync delay v ϕ vdb u bus 75 u gen 75 t o o f a s t o o s l o w 2 10 8 16 12 4 20 0 4 0 8 0 6 0 2 1 0 4 2 10 synchro check relay b1 b2 12 11 24 t a2 on off ts 2x v dead bus generator type.
1 to on permits ov h bov fixed minimum voltage limit iz zl closing enabled zone live line live bus condition only figure 2 voltage monitor acceptance zones w.
Now again to configure o p contact go to hmi of the relay and press down arrow until you.
Sync check relay supervision automatic synchronizer matches v and f and closes.
Synd sync out g1 g2 21 tx l1 l2 l3 l1 l2 l3.
1 to on and condition sw.
Connecting two electrical systems that are not closely matched can cause expensive damage and disturbance to the electrical.
Figure 1 provides suggested settings for generator sync check relays.
Sync relay contacts closed by voltage monitor logic ov exceeded sync check reclosing not enabled setting mode sw.
Ffi sync check logic enabled no.
Voltage settings for sync check relays have a voltage hi and voltage lo settings.
Figure 1 synchronizing check relay settings.
If the measured angle has met this criteria for the time period defined by the front panel time delay setting the sync output contact closes.
Be1 25 sync check function measures the phase angle between single phase voltages of line and bus.
The synchro check relay can be used to assist in the semi automatic parallelling of two ac power systems.
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The calculations consider circuit breaker closing times and maximum allowable slip rates and determine the minimum seconds per scope revolution and the worst.
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