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Emax CB配備PR332/P-PR333/P-PR122/P-PR123/P脫扣器。
檢測(cè)到故障的每個(gè)斷路器通過通信線立即向電源側(cè)的斷路器發(fā)送信號(hào)；斷路器
不接收來自負(fù)載斷路器的任何通信
側(cè)應(yīng)啟動(dòng)打開命令。
在本例中，當(dāng)故障位于指示點(diǎn)時(shí)，斷路器
D和E沒有檢測(cè)到故障，因此它們不與
電源側(cè)的斷路器（斷路器B），其應(yīng)啟動(dòng)
在40到200毫秒的選擇性時(shí)間內(nèi)打開命令。
為了正確啟動(dòng)區(qū)域選擇性，建議進(jìn)行以下設(shè)置：
S t
2.≥ 選擇性時(shí)間+70毫秒
I I3=關(guān)閉
G.t
4.≥ 選擇性時(shí)間+70毫秒
每個(gè)斷路器的選擇時(shí)間設(shè)置相同
A.
C
B
D
E
Ik
X1N 800PR332/P
退出
在
X1N 800PR332/P
退出
在
退出
在
X1N 1000PR333/P輸出
在
E3N 2500PR123/P
退出
在E4S 4000PR123/P中
120保護(hù)和控制裝置| ABB
3保護(hù)協(xié)調(diào)
3.1保護(hù)協(xié)調(diào)
1SDC200560F0001
Tmax型斷路器（T4L-T5L-T6L）的區(qū)域選擇性
PR223 EF釋放
上述示例顯示了通過聯(lián)鎖協(xié)議（聯(lián)鎖，IL）連接的電廠，以便通過PR223 EF釋放保證區(qū)域選擇性。
如果發(fā)生短路，斷路器立即位于
故障通過總線分層向保護(hù)裝置發(fā)送閉鎖信號(hào)
并在跳閘前驗(yàn)證模擬閉鎖信號(hào)是否未被觸發(fā)
由負(fù)載側(cè)的保護(hù)裝置發(fā)送。
在圖中的示例中，斷路器C直接位于電源側(cè)
對(duì)于故障，向斷路器a發(fā)送閉鎖信號(hào)，斷路器a是分層的
較高的。如給定示例所示，如果負(fù)載側(cè)不存在保護(hù)，
斷路器C應(yīng)在很短的時(shí)間內(nèi)斷開，因?yàn)樗鼪]有收到任何
阻塞信號(hào)。
與使用Emax系列空氣斷路器的區(qū)域選擇性（40到200ms）相比，一切發(fā)生的時(shí)間更短（10到15ms），因此

Emax CB equipped with PR332/P-PR333/P-PR122/P-PR123/P releases. Each circuit-breaker detecting a fault sends a signal to the circuit-breaker immediately on the supply side through a communication wire; the circuit-breaker that does not receive any communication from the circuit-breakers on the load side shall launch the opening command. In this example, with a fault located in the indicated point, the circuit-breakers D and E do not detect the fault and therefore they do not communicate with the circuit-breaker on the supply side (circuit-breaker B), which shall launch the opening command within the selectivity time set from 40 to 200 ms. To actuate correctly zone selectivity, the following settings are suggested: S t 2 ≥ selectivity time + 70 ms I I3 = OFF G t 4 ≥ selectivity time + 70 ms Selectivity time same settings for each circuit-breaker A C B D E Ik X1N 800PR332/P OUT IN X1N 800PR332/P OUT IN OUT IN X1N 1000PR333/P OUT IN E3N 2500PR123/P OUT IN E4S 4000PR123/P 120 Protection and control devices | ABB 3 Protection coordination 3.1 Protection coordination 1SDC200560F0001 Zone selectivity for circuit-breakers type Tmax (T4L-T5L-T6L) with PR223 EF releases The example above shows a plant wired through an interlocking protocol (Interlocking, IL), so as to guarantee zone selectivity through PR223 EF release. In case of short-circuit, the circuit-breaker immediately on the supply side of the fault sends through the bus a block signal to the protection device hierarchically higher and verifies, before tripping, that an analogous block signal has not been sent by the protection on the load side. In the example in the figure, the circuit-breaker C, immediately on the supply side of the fault, sends a block signal to the circuit-breaker A, which is hierarchically higher. If, as in the given example, no protection on the load side is present, the circuit-breaker C shall open in very quick times since it has received no block signal. Everything occurs in shorter times (10 to 15ms) than in the case of zone selectivity with the Emax series air circuit-breaker (40 to 200ms), thus