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. Sync check relay supervision automatic synchronizer matches v and f and closes. Now to make the setting of system split go to menu system sync and set your values here.

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Be1 25 sync check function measures the phase angle between single phase voltages of line and bus.

Sync check relay settings.

Sync relay contacts closed by voltage monitor logic ov exceeded sync check reclosing not enabled setting mode sw. The volt free relay contacts change state when the voltage level phase relationship and frequency are within the selected synchronising limits. Figure 1 provides suggested settings for generator sync check relays. Synd sync out g1 g2 21 tx l1 l2 l3 l1 l2 l3.

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. Then sync check verifies that this angle is less than the front panel phase angle selector setting. The synchro check relay can be used to assist in the semi automatic parallelling of two ac power systems. 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.

If you require any other information please contact us using form located at the bottom of the page. Synchro check relay type. Figure 1 synchronizing check relay settings. This page contains technical data sheet documents library and links to offering related to this product.

The calculations consider circuit breaker closing times and maximum allowable slip rates and determine the minimum seconds per scope revolution and the worst. Ffi sync check logic enabled no. 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. The proposed default angles are 5 degrees advance and 5 degrees late.

Connecting two electrical systems that are not closely matched can cause expensive damage and disturbance to the electrical. 1 to on and condition sw. For successful synchronization voltage frequency phase rotation and phase angle of the two sources must meet the thresholds set per the user programmable settings in the relay. Voltage settings for sync check relays have a voltage hi and voltage lo settings.

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. Go to check synch menu and make system split enable and make the angle 90 degree e g. Now again to configure o p contact go to hmi of the relay and press down arrow until you.