在前一篇,我們介紹了低壓制櫃的FAT和SAT測試中低壓制櫃的Secondary Injection Test 次級注入測試。見鏈接:
【低壓制櫃設計】低壓制櫃的測試(T&C of LV Switchboard 2 of 2)- 出廠驗收測試(FAT)和現場驗收測試(SAT)(Part 5)
- 手動閉合和斷開;
- 如果斷路器附設儲能裝置,對裝置進行測試;
- 如果斷路器附有電動開關元件,以電動方式閉合和斷開;
- 如果斷路器設有跳脫裝置,測試這些元件,例如:分勵線圈(shunt trip coil)和失壓線圈(undervolt release coil);
- 如果斷路器設有聯鎖裝置,例如櫃門聯鎖,測試斷路器可否在閉合(ON)的狀態下開啟櫃門;
- 測試斷路器的輔助接點(auxiliary contact)的開關轉換狀態。
- 手動閉合和斷開;
- 如果空氣断路器附有電動開關元件,測試以電動方式閉合和断開;
- 如果空氣斷路器是抽屜式,把空氣断路器在固定底座上進行抽出和復位的测試;
- 測試空氣斷路器的各種跳脫装置,例如:分勵線圈(shunt trip coil)和失壓線圈(undervolt release coil);
- 測試空氣斷路器的儲能装置;
- 檢驗空氣断路器的輔助接點(auxiliary contact)的開關轉换狀態;
- 测試空氣斷路器的聯鎖功能,例如:當閉合抽屜式斷路器時,操作人員不可以把斷路器從底座抽出。
- 手動閉合和斷開;
- 如果熔斷組合或開關件附有閉合/斷路的狀況指示,檢查和測試有關之狀況;
- 如果熔斷組合或開關件設有聯鎖裝置,例如櫃門聯鎮,測試器件可否在閉合(ON)的狀態下開啟櫃門。
- 手動閉合和斷開;
- 測試電動閉合和互換的功能;
- 測試開關的機械和電動聯鎖功能;
- 對開關上的閉合/斷路的狀況指示,進行檢查和測試有關之狀況;
- 如果開關設有櫃門聯動,測試器件可否在閉合(ON))的狀態下開啟櫃門。
- 檢查每個指示燈是否在設定的工作狀態下亮起來。
(i) To check the function d.c. supply to LV Switchboard
檢查低壓配電盤的直流電源功能。
Digital Multimeter 數字萬用表
(1) Setup of LV Switchboard for Sequence of Control, Interlocking and Measurement of Signal Points to the Building Management System
1.1 Check and ensure that installations of LVSB are completed properly according to approved drawings.
1.2 Check and ensure that all circuit breakers are properly installed and functional according to approved drawings.
1.3 Check and ensure that all protection relays and control relays are properly installed and functional according to approved drawings.
(2) Sequence of Control and Interlocking
2.1 Check and ensure that all circuit breakers, overload relays, etc. are functional.
Details of the test are listed in the test form.
2.2 Use a digital multi-function meter to check the open and closed status of all digital output points. Check and ensure that the operation statuses of all protection devices comply with required functions.
(3) Measurement of Signal Points to Building Management System (BMS)
3.1 Check and ensure that the signal points to the BMS are provided according to approved drawings. Details of the test are listed in the test form.
3.2 Use the push buttons of the digital multi-function meter panel to check the specified electrical parameters.
(4) Check if the ATS / Interlock operates normally
4.1 Simulate the following conditions and check that the changeover device operates correctly
4.2 Check that when one breaker or contactor is closed, the other breaker or contactor cannot be closed
4.3 Check that when either Normal supply or Essential supply breaker is tripped on fault, both breakers cannot be closed manually or electrically
4.4 Check that the under-voltage relay is activated against the setting of 70% rated voltage within +/- 10% tolerance
ASD相關測試記錄表格:(適用於所有政府項目)
想請教吓有關ACB打20次掣嘅functional test,佢嘅原意其實係點,係咪試緊制櫃外置Battery俾ACB嘅電?ACB 同 電池有關係嗎?當中ACB打掣同其運作原理都唔係好理解🙏🏻有望可以解答吓,謝謝
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