Modern Electrical Safety Tester

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Jewel Morton
5 years ago
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1 Modern Electrical Safety Tester 1

2 Electrical Safety Test (EST) 2

3 Execute EST Test Why do need to execute EST test Execute safety test is meet to the standard requirement of consignee. Execute safety test is quality requirement to oneself. Improve product quality and reliability. Lessen the argument or problem in potentiality may occurred. Specified the standard items of testing, such as electric component. 3

4 Electrical Safety Test Hi-pot Stress Test of the Insulation Generally, it also called Dielectric Withstand, High Potential, or Hi-Pot Test, it is high voltage test of the insulation to UUT. Generally speaking, the voltage when test UUT is always higher normal operation voltage. It is about 1000VAC to add double of normal operation voltage. 4

5 Electrical Safety Test Hi-pot Hipot Circuit Diagram 2wire, 3wire HV Lead Appliance 1250V AC Insulating Table Ground Lead HV Lead Appliance 1250V AC Insulating Table Ground Lead 5

6 Electrical Safety Test Insulation Insulation test is to measure valid insulation material to insulate electric current is occurred for ensure the quality of insulation material. Insulation voltage use 500Vdc commonly 6

7 Electrical Safety Test Grounding Ground Continuity Ground Continuity Return Appliance 0.1 Amp Insulating Table Ground Continuity Driver connect metal case 7

8 Electrical Safety Test Grounding Ground Bond Test Current = 2 x (rated current) or 25A which ever is higher Ground Bond Return Appliance Insulating Table 25 Amp Ground Bond Driver connect metal case 8

9 Electrical Safety Test Leakage Current Isolating Transformer Equipment under test L Isolating transformer N 2 Selector switch 1 Measuring instrument Equipment protective earth terminal 9

10 Electrical Safety Test Leakage Current Leakage Current Meter Power actual working frequency up to several ten thousand Hz, safety requirement using simulation human body impedance to proceed Earth Leakage Current measurement. 10kΩ 1500Ω 0.2uF 0.022uF V Voltmeter 500Ω Measuring circuits for d.c and for a.c with sinusoidal frequencies up to 1MHz 10

11 EST in SMPS & EMI Filters 11

12 SMPS Module No Floating Ground (standard). Test items are Ground Bond P (L+N)-Case With Grounded output and Floating Ground output simultaneously. Ground Bond P-Case+S (grounded) P-S (Floating ground) S (floating)-c 12

13 EMI Filter L1 C1 T1 L2 C2 C3 T2 L3 L4 PFC L5 - + PFC Control EMI Filter Section PFC (Power Factor Correction) Section DC to DC Converter Section L6 C4 T4+ T4- T5- T5+ T5 Ctrl. T4 Ctrl. T3 Level Control SMPS Block Diagram L7 C5 13

14 EMI Filter Section T1,T2 : Hi-pot (WVac or WVdc) L1 to L2 Line L E R C1 T1 L1 C2 T2 L3 L' Load C1, C2, C3 : Hi-pot N L2 C3 L4 N' Hipot Tester

15 PFC Section L5, L6: L' L5a L6 Hi-pot test winding to chassis, between windings for double N' PFC L5b - + C4 PFC Control

16 DC-DC Convert Section T4+ T4- T5- T5+ T3 L7 C5 T5 Ctrl. T4 Ctrl. Level Control T3, T4, T5: Hi-pot, IR test between windings, windings to chassis

17 EMI Filter Line L E R C1 L1 T1 C2 T2 L3 L' Load N L2 C3 L4 N' LE Safety Test Step 1 : Hi-pot test L to N Step 2 : Hi-pot test L+N to E

18 Electrical Safety Analyzer in 1 Tester : AC, DC, IR, GB, LC Simultaneous Twin Ports TM output capability Arc detection with programmable limit and 4 pulse width Ground floating function optional Ground Fault Interrupters (GFI) Meet UL, CAS, TUV, VDE, CE safety requirements Fast cut-off time : 0.4 ms, fast discharge time : < 0.2 sec 99 internal instrument setups with 99 steps per setup Hipot/Line Leakage/Probe Scanner ( ) Optional GP-IB, SCANNER, RS232, PRINTER interface 18

19 Hipot Tester with Scanner AC/DC/IR Hipot Tester WAC 5KV/30mA, WDC 6kV/10mA Current Resolution AC 1uA, DC 0.1uA Real or Total Current Measurement Insulation Resistance up to 50G Ohm Built-in 8 Channel Scanner Ground Continuity Check with 1 Ohm Limit Ground Fault Interrupters (GFI) Arc Detection with Programmable Limit 99 steps or 99 groups for total 500 memory locations 19

20 Economical Hipot Tester DC/ AC/ IR Hipot Tester Trip Current Programmable to 15mAac and 7.5mAdc Ground Continuity Check Function Ground Fault Interrupters (GFI) TUV Approved and CE Certified Arc Detection with Programmable Limit Zero Offset 20

21 Maintenance Daily Check The necessity of production line daily check. Generally use simulation load on daily check 1kV 1MΩ 25A 50mΩ 21

22 Maintenance Calibration 9102 Hipot Calibrator 22

23 Smart Safety Test Arcing ARC is electrical character occurred by voltage or current quickly change. At the same time,it may happen short or zapping sound. Spike discharge Ionization Corona Power loss Short time on high voltage, normal working on low voltage 10 µsec 23

24 Smart Safety Test Ground Fault Interrupt (GFI) GFI current value (GFI Level) 0.5mA or 5mA is enough current value of GFI, the hardware cut down circuit, can cut down high voltage output in short time for preventing shock. Delay Time Non delay time is the item GFI need to consider, therefore DC Hipot can t guarantee this function is effective. 1kV Hipot 1.000mA 24

25 Factory Automatic Solutions Control interface GP-IB, RS-232, RS-422, RS-485 Application Software Smart-Link Bar code reader can link with bar code reader Printing test report 25

26 EST Products Selection Guide 1907X X Chroma XA 9032C 905X 907XS Main WAC,WDC,I WAC,WDC,I WAC,WDC,I WAC WDC,IR WAC,WDC WAC,WDC,I Function R,GB,LC R,SCAN R R 0.05~5kV AC Volt 0.05~5kV 0.1~10kV 0.05~5kV 0.05~5kV 0~5kV 0.1~5kV 0.05~6kV DC Volt 0.05~6kV 0.1~12/20kV 0.05~6kV 0.05~6kV 0~5kV 0.1~6kV Accuracy 1%+5counts 1%+10count 1%+5counts 1%+5counts 1%+5counts 1%+2counts 1%+5counts 40mAac 30mAac 100mAac 100mAac 15mAac Trip Current 20mAac 10mAdc 20mAdc 15mAdc 20mAdc 25mAdc 7.5mAdc Arc Detect V V V V V V V IR 1000V/50GΩ 1000V/50GΩ 1000V/50GΩ 1000V/50GΩ 1000V/10GΩ Continuity 1905X 1907X Adj. Ramp V V V V V V Ground Bond 30A/0.2mΩ 30A/0.2mΩ Line Leakage 300V/6mAAC DC Discharge V V V V GFI X 1907X Scanner V V V V V RS-232 V V V V V GP-IB V V V V V Printer V V V V V Twin Port Electrical Safety Test Applications for UL,TUV,IEC Medical Information Information Information Information Information Information Household Household Household Household Household Household Component Component Transformer Transformer Transformer Transformer Transformer Motor Motor Motor Motor Motor GB 702A 705 IR 1000V/100TΩ, 1090V/200TΩ Component 26

Model kvac Hipot Tester, 5 kvdc Hipot Tester & Insulation Resistance Tester. Internal 4 or 8 Port Scanning Matrix available

Model kvac Hipot Tester, 5 kvdc Hipot Tester & Insulation Resistance Tester. Internal 4 or 8 Port Scanning Matrix available Fully-Automated Dielectric Withstand Analyzer HypotULTRA III is a multi-function dielectric analyzer with an enhanced graphic LCD. Choose from two models: the 7620 AC Hipot tester and the 7650 AC/DC/IR