HP Extech 380976 Instrukcja Użytkownika

User Guide 1Φ/3Φ 1000 Amp True RMS Power Clamp-On Model 380976

380976 V3.1 6/08 10 3Φ 4-Wire KW, HP, KVA, KVAR, Power Factor & Phase Angle Measurement 1. First, measure WR(L1) (refer to the diagram below).

380976 V3.1 6/08 11 3. Third, measure WT(L3) (refer to the diagram that follows the steps below) a. Disconnect the te

380976 V3.1 6/08 12 4. The power clamp will process these three sets of data (WL1, WL2 WL3) and show the result on the LCD. The

380976 V3.1 6/08 13 6. W3φ4W = WR(L1) + WS(L2) WT(L3) KVA KWKVARWW W34234234φφ φ=+ PFKWKVAWWW343434φφφ= 7. Set the rotary switch to another posit

380976 V3.1 6/08 14 Capacitance Measurements 1. Fully discharge the capacitor under test before proceeding. 2. Insert the test leads into the inp

380976 V3.1 6/08 15 Meter Control Keys HOLD - MX/MN Key Data Hold Function Press this key momentarily to put the meter into Data Hold mode (HOLD wi

380976 V3.1 6/08 16 Automatic Sleep Mode and Battery Replacement The Meter is powered by a 9V battery. An AUTO SLEEP feature is included to preserv

380976 V3.1 6/08 17 Specifications General Specifications Display Dual Display; 4-digit, 10,000 count (0 to 9999) LCD Jaw Opening 1.6” (42mm) Max

380976 V3.1 6/08 18 Measurement Specifications Accuracy: ± (% of rdg + number of digits) from 18oC to 28oC (64oF to 82oF) R.H. < 80% AC Current

380976 V3.1 6/08 19 MΩ (Resistance) Range Resolution Accuracy Overload Protection 9.999MΩ 1KΩ 99.99MΩ 10KΩ ±(5% + 10d) 600V Capacitance Range Reso

380976 V3.1 6/08 2 Introduction Congratulations on your purchase of the Extech 380976 Power Clamp-On Meter. This device measures 1Φ/3Φ Power (True,

380976 V3.1 6/08 20  Support line (781) 890-7440 Technical support: Extension 200; E-mail: [email protected] Repair & Returns: Extension 210

380976 V3.1 6/08 3 Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year fro

380976 V3.1 6/08 4 Meter Description 1. Transformer Jaws 2. Jaw opening trigger 3. Data Hold & MX/MN button 4. Function Selector 5. Range bu

380976 V3.1 6/08 5 Measurements AC + DC Voltage Measurements WARNING The maximum input is 600V. Do no attempt voltage measurements above this limit

380976 V3.1 6/08 6 AC Power Measurements 1Φ KW, KVA, KVAR, Power Factor & Phase Angle Measurement 1. Set the rotary switch to the ‘KW/KVA’ po

380976 V3.1 6/08 7 3Φ 3-Wire KW, HP, KVA, KVAR, Power Factor & Phase Angle Measurement 1. First, measure WRS(L1L2) (refer to the diagram below

380976 V3.1 6/08 8 3. The power clamp will process these two sets of data (WL12 , WL23), and show the result on the LCD. The WL123

380976 V3.1 6/08 9 NOTE Once a phase is selected as COM, users can not change this selection in the subsequent measurement. For example, if S (or