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臺灣標(biāo)準(zhǔn)電機SEW儀器儀表--ST-1520 Earth Resistance Testers 3 Wire Digital

ST-1520 Earth Resistance Testers
3 Wire (Digital)

FEATURES

High quality Taut Band movement.
Capable of measuring earth voltage (Vac).
The timer operates automatically for about three to five minutes when the "PUSH BUTTON SWITCH" and "TIMER ON BUTTON" are pressed together. This will keep test "ON" for the duration of the timer.
Battery life indication.
Battery replacement can be easily made without removing the caring case.
CAT II 30V.
Calibration performed with supplied test leads.

SPECIFICATIONS

Measuring Ranges	Earth Resistance : 0-20 Ohm/0-200 Ohm/0-2000 Ohm
	Earth Voltage : 0-200V AC (40-500Hz)
Accuracy	Earth Resistance : +/- (2%rdg+2dgt) or +/- 0.1 Ohm, which is greater
	Earth Voltage : +/- (1%rdg+2dgt)
Earth Resistance Resolution	0-20 Ohm (0.01 Ohm)
	0-200 Ohm (0.1 Ohm)
	0-2000 Ohm (1 Ohm)
Measuring System	Earth Resistance by constant current inverter 820 Hz approx. 2mA
Low Battery Indication	"B" symbol appears on the diaplay
Data Hold Indication	"DH" symbol appears on the display
Over Range Indication	"1" (MSD)
Open Circuit Indication	LED will be unlit
Display LCD	LCD 3-1/2 digit (2000 counts)
Power Source	1.5V (SUM-3) x 6 Type AA
Dimensions	163(L) x 100(W) x 50(D) mm
Weight	Approx. 480g (battery included)
Accessories	Test leads (AL-36 : red-15m, yellow-10m, green-5m)
	Auxiliary earth bars
	Heavy-duty case
	Instruction manual, batteries

特點

● 量測接地電阻(Ω)和接地電壓(ACV)。
● 量測電流僅有2mA，不易造成漏電斷路器的跳脫。
● 同時按下"PUSH ON"和"TIMER ON"可作長時間的量測，
約5分鐘後，自動關(guān)機，可避免浪費電源。
● 接線正確，在量測時紅燈(LED)會顯示。
● 數(shù)值鎖定功能。
● 方便使用、攜帶和保存。
● 使用電池操作。
●
CAT III 200V

規(guī) 格 (23°C±5°C ＜80%R.H.)

量測檔位	接地電阻 : 0~20Ω/0~200Ω/0~2000Ω 接地電壓 : 0-200V AC(40-500Hz)
準(zhǔn)確度	接地電阻 : ±(2%讀值+2位數(shù))或±0.1Ω 接地電壓 : ±(1%讀值+2位數(shù))
接地電阻解析度	0-20Ω : 0.01Ω 0-200Ω : 0.1Ω 0-2000Ω : 1Ω
量測系統(tǒng)	820Hz 2mA 定電流
顯示器	液晶顯示(LCD)3位(Z大讀值1999)
電源不足指示	顯示符號"B"
數(shù)值鎖定指示	顯示符號"DH"
外形尺寸	163(長)×100(寬)×50(高)mm
重量	約480克(含電池)
使用電池	1.5V(AA)×6(顆)