1. 台湾标准电机SEW仪器仪表--2820 EL ELCB Testers Up To 1000mA

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          2820 EL   ELCB Testers
          Up To 1000mA  
          2820 EL
          FEATURES
           
           Operating voltage 100-450V L-E.
           Rated current 999mA, at 317V AC/50Hz.
           Checks ELCB trip time and trip point (sensitivity).
           Auto-Off/Auto-Ranging.
           Phase angle selection (0 degree / 180 degree).
           Indicates tripping phase angle.
           Impact resistant enclosure.
           Over temperature shut-down.
           Transient protection.
           Suitable for heavy industrial use.
           Fused.
           , -1 CAT III 450V.
           OPERATING PRINCIPLES
           EARTH LEAKAGE TESTS
           The testers may be used to check the trip point (Test 1) of the ECLB or the trip time (Test 2). Test 1 is normally used on instantaneous ELCBs while Test 2 is normally used on inverse and fixed time-delay ELCBs.
           TEST PROCEDURE
           Test 1 - instantaneous ELCBs A ramp current, increasing at approximately 12 mA/s is introduced between L and E and the point at which the ELCB trips is recorded. To save time and reduce energy dissipation, the starting point of the ramp may be selected.
           Test 2 - inverse and fixed time delay ELCBs. Aconstant current is selected and injected between L-E and the tripping time is recorded.
          SPECIFICATIONS
           
          Trip Current-Range 0-1 A at 317V (Auto-Range Programmable)
          Trip Current-Resolution 1mA
          Operating Voltage (L-E) 100-450V
          Phase Angle Setting 0 degree and 180 degree selectable
          Timer-Max 99.999s
          Timer-Resolution 1mS
          Typical Accuracy
          Trip-Current +/- 1%rdg +/-1mA
          Trip-Time +/- 1%rdg +/-1dgt
          Voltage +/- 3%rdg +/-1dgt
          Operating-Temperature-Humidity -10 degree C to + 40 degree C, 80% max relative humidity
          Power Source 1.5V (AA) x 8 batteries
          Dimensions 170(L) x 120(W) x 95(D) mm
          Weight Approx. 800g (battery included)
          Accessories Test leads
          Shoulder belt
          Instruction manual
          Batteries
          特 點
          ● 微處理器系統控制設計。
          ● 操作電壓110-450V(L-E)。
          ● 檢查核對斷路器跳脫時間和跳脫電流。
          ● 可選擇相位(0度和180度)。
          ● 自動換檔。
          ● 自動關機。
          ● 過熱保護。
          ● 可供重工業設備量測。
          ● 保險絲保護。
          ● 符合 -1 CAT Ⅲ 450V
          規 格 (23°C±5°C <80%R.H.)
          跳脫電流檔位 0-1A在317V時(自動換檔)
          跳脫電流解析度 1mA
          操作電壓(L-E) 100 - 450V
          相位選擇 0°與180°
          測試Z長時間 99.999秒
          時間解析度 1ms
          跳脫電流準確度 ±(1%讀值+1mA)
          跳脫時間準確度 ±(1%讀值+1位數)
          電壓準確度 ±(3%讀值+1位數)
          操作溫濕度 -10°C-40°C 80%
          外形尺寸 170(長)×120(寬)×95(高)mm
          重量 約800g(含電池)
          使用電池 1.5V(AA)×8(顆)

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