德国美翠METREL通用接地电阻测试仪MI2124

接地电阻测试仪型号1. 引言接地电阻测试仪是一种用于测量电气设备或系统的接地电阻的仪器。

通过测量接地电阻的大小，可以评估接地系统的工作状态，确保设备和人员的安全。

本文档将介绍一款接地电阻测试仪的型号，并详细描述该型号的特点、技术参数、使用方法和注意事项。

2. 型号概述接地电阻测试仪型号：GX-20002.1 特点•高精度测量：该型号接地电阻测试仪采用先进的测量技术，能够实现高精度的接地电阻测量，最大测量误差小于3%。

•多功能显示屏：配备大尺寸LCD显示屏，显示清晰、易读，同时具备背光功能，可在暗环境下进行测试。

•测量范围广：接地电阻测试仪型号GX-2000适用于各种接地系统，包括低阻接地、中阻接地和高阻接地，测量范围从0.01Ω到2000Ω。

•自动补偿功能：仪器自动调节温度和湿度对测量结果的影响，确保测量结果的准确性和稳定性。

•简便操作：通过简单的操作界面和直观的指示灯，用户可以轻松地进行接地电阻测量。

2.2 技术参数以下是接地电阻测试仪型号GX-2000的技术参数：•测量范围：0.01Ω - 2000Ω•分辨率：0.001Ω•测量精度：小于3%•显示屏：LCD显示屏，背光功能•工作温度：-10℃到 50℃•电源：内置可充电锂电池•充电时间：约4小时•使用时间：连续使用约8小时3. 使用方法接地电阻测试仪型号GX-2000的使用方法如下：步骤1：确保仪器已充满电，并将测试线连接至待测接地设备的接地端子。

步骤2：打开仪器电源，并按照操作界面上的指示进行操作。

通常情况下，用户只需按下“开始测量”按钮即可进行测量。

步骤3：在测量过程中，仪器会显示实时测量结果，用户只需等待测量完成。

步骤4：测量完成后，仪器会自动显示接地电阻的数值。

用户可根据需要记录测量结果。

4. 注意事项在使用接地电阻测试仪型号GX-2000时，需要注意以下事项：•在进行测量前，确保待测接地设备已断电且无电荷残留。

•确保测试线与接地端子良好接触，避免接触不良导致测量误差。

ETCRETCR系列钳形接地电阻测试仪注意感谢您购买了本公司的钳形接地电阻仪，为了更好地使用本产品，请一定：——详细阅读本用户手册。

——遵守本手册所列出的操作注意事项。

◆任何情况下，使用本钳表应特别注意安全。

◆注意本钳表所规定的测量范围及使用环境，禁止钳测动力线。

◆注意本钳表面板及背板的标贴文字。

◆开机前，扣压扳机一两次，确保钳口闭合良好。

◆开机时，不要扣压扳机，不能钳任何导线。

◆正常开机，显示“OLΩ”符号后，才能钳测被测对象。

◆钳口接触平面必须保持清洁，不能用腐蚀剂和粗糙物擦拭。

◆避免本钳表受冲击，尤其是钳口接合面。

◆危险场合，强烈推荐选用本公司的防爆型钳形接地电阻仪。

◆防爆型产品，在危险场所内严禁拆卸和更换电池。

◆本钳表在测量电阻时钳头会发出间歇的轻微“嗡--”声，这是正常的，注意区别报警的“嘟--嘟--嘟--”声。

◆测量导线电流不要超过本钳表的上量限。

◆长时间不用本钳表，请取出电池。

◆拆卸、校准、维修本钳表，必须由有授权资格的人员操作。

◆由于本钳表原因，继续使用会带来危险时，应立即停止使用，并马上封存，由有授权资格的机构处理。

◆本用户手册中标有“*”的内容仅限于C型。

目录一、产品简介 (3)二、产品规格 (3)三、钳表结构 (5)四、液晶显示 (5)1.液晶显示屏 (5)2.特殊符号说明 (6)3.显示示例 (6)五、操作方法 (7)1.开机 (7)2.关机 (8)3.电阻测量 (8)4.电流测量 (9)5.数据锁定/解除/存储 (9)6.数据查阅 (10)7.报警功能设定 (10)8.报警临界值查看 (11)9.数据清除 (11)六、测量原理 (11)1.电阻测量原理 (11)2.电流测量原理 (11)七、接地电阻测量方法 (12)1.多点接地系统 (12)2.有限点接地系统 (12)3.单点接地系统 (13)八、现场应用 (15)1.电力系统的应用 (15)2.电信系统的应用 (15)3.建筑物防雷接地系统的应用 (16)4.加油站接地系统的应用 (16)九、测量接地电阻的注意事项 (18)十、装箱清单 (19)一、产品简介ETCR系列钳形接地电阻仪是我公司技术研发团队对技术品质的卓越追求，通过不断创新完善，对老款产品的彻底升级。

DESCRIPTIONMegger’s new range of DC insulation testers MIT515, MIT525,MIT1025 and MIT1525 are targeted at original equipment manufacturers and industrial companies. The top of the rangeMIT1525 performs insulation resistance tests up to 15 kV with a30 TΩ maximum resistance and an accuracy of ±5 % from 1 MΩup to 3 TΩ. The MIT515 offers IR, DAR and PI functions but has no memory functionality. MIT525, MIT1025 and MIT1525 have a full suite of test modes as well as on-board memory and the ability to stream data/download data to a PC/laptop. Instrument productivity is a focus of the new MIT range which offers rapid charge batteries and operation from an AC source if the batteries are flat. Rapid charge batteries enable > 60 minutes testing after a 30 minute charge.MIT515: 5 kV IRT with PI and DAR but no memoryMIT525: 5 kV IRT with all test modes including a ramp test plus advanced memory functions with recall to screen, RTC for time/dat stamp of results and USB cable interface to PC/PowerDBMIT1025: 10 kV IRT with all test modes including a ramp test plus advanced memory functions with recall to screen, RTC for time/dat stamp of results and USB cable interface to PC/PowerDBMIT1525: 15 kV IRT with all test modes including a ramp test plus advanced memory functions with recall to screen, RTC for time/dat stamp of results and USB cable interface to PC/PowerDBSafety rating is not compromised on the MIT range with all terminals safety rated to CAT IV 600 V to 3000 m (5 kV, 10 kV) or CAT IV 1000 V to 3000 m (15 kV). A range of 5 kV and 10 kV test leads are available plus dedicated 15 kV test leads which are double insulated with clips designed for 15 kV creepage paths. The 15 kV leads are supplied in a holdall. Suitably rated HV gloves and other personal protection equipment are required to be worn when testing.The MIT range share dual case design which includes a tough outer case to protect the tester from knocks/drops and an inner fire retardant case. The IP rating is IP 65 case closed eliminating moisture and dust ingress.An intuitive user interface ensures no lost time remembering how to use the tester. Simplicity of operation is achieved with two rotary switches and the large backlight display which enables multiple results to be displayed simultaneously. A graphical quick start guide is provided inside the lid to assist first time users.Five preset voltage ranges are provided in insulation test mode, plus a user settable lock voltage range. Preconfigured diagnostic tests include Polarisation Index (PI), Dielectric Absorption Ratio (DAR), dielectric discharge (DD), Stepped Voltage (SV) and ramp test. Advanced memory storage includes time/date stamping of results, logging of data and recall of results to screen. A fully isolatedUSB interface is used for safe transfer of data to Megger’s asset management software; PowerDB Pro, Advanced and Lite packages.Test leads are double insulated t with clamps rated at 3 kV t equivalent to 6 kV single insulation for the medium clip leadset and 5 kV t equivalent to 10 kV single insulation for the large clip. The 15k V leadset is insulated to 15 kV.Advanced memory storage includes time/date stamping of results, logging of data and recall of results to screen. A fully isolated USBMIT515, MIT525, MIT1025, MIT15255 kV, 10 kV, 15 kV DC Insulation Resistance TestersMIT515, MIT525, MIT1025, MIT15255 kV, 10 kV, 15 kV DC Insulationresistance testers■■Measures up to 30 TΩ■■Safety rated up to CAT IV 1000 V to 3000 m■■Unique dual-case design - additional userprotection■■Operates from battery or AC mains supply■■Rapid charge Li-ion battery■■Advanced memory with time/date stampdevice interface (type B) is used for safe transfer of data to Megger’s PowerDB / Pro, Advanced and Lite asset management software. (MIT525, MIT1025 nd MIT1525 only)APPLICATIONThe Insulation Resistance (IR) test is a quantitative test which indicates the effectiveness of a product’s electrical insulation. Applications include cables, transformers, motors/generators, circuit breakers and bushings. Common insulation tests are the “spot test”, a 1 minute IR test and a 10 minute Polarisation Index (PI) test, where PI is the ratio R10min / R1min and is temperature independent.FEATURES AND BENEFITS■■Insulation resistance up to 30 TΩ @ 15 kV , 20 TΩ @ 10kV , 10 TΩ@ 5 kV■■IR, Timed IR, DAR, PI, DD, SV and ramp diagnostic tests ■■High current – 3 mA short circuit current■■High noise immunity – 3 mA (5 kV and 10 kV) 6 mA (15 kV) ofnoise rejection■■Li-ion battery – up to 6 hrs continuous testing @ 5 kV with a100M load, battery meets IEC 2133■■Safety rating: CAT IV 600 V to 3000 m (5 kV , 10 kV) CAT IV 1000V to 3000 m (15 kV)■■Large LCD display with backlight■■Dedicated voltmeter function (30 V to 660 V)■■Advanced memory, on screen recall and real time clock for date/time stamped results (MIT525, MIT1025 and MIT1525 only)■■Download of on-board results via USB interface (MIT525,MIT1025 and MIT1525 only)■■Recorded temperature (measured by independent instruments)can be saved with test result (MIT525, MIT1025 and MIT1525 only)■■PowerDB Lite asset management software supplied (MIT525,MIT1025 and MIT1525 only)■■MIT515, MIT525 and MIT1025 safety rated at CAT IV 600 V(maintained to 3000 m altitude)■■MIT1525 safety rated at CAT IV 1000 V (maintained to 3000 maltitude)SPECIFICATIONSAC voltage (auto-ranging)5 kV , 10 kV: 90-264 V rms, 47- 63 Hz 100 VA15 kV: 90-264 V rms, 47- 63 Hz 200 VABattery charge time 2.5 hours deep discharge, 2 hours normal dischargeBattery life11.1 V , 5.2Ah Li-ion batteries, meet IEC 62133:2003, MIT1525 has 2 battery packsBattery life MIT515, MIT525: 6 hours (typical) continuous testing at 5 kV with a 100 MΩ load Battery life MIT1025: 4.5 hours (typical) continuoust esting at 10 kV with a 100 MΩ load Battery life MIT1525: 4.5 hours (typical) continuous t esting at 15 kV with a 100 MΩ load Test voltageMIT515, MIT525:250 V , 500 V , 1000 V , 2500 V , 5000 V , V L MIT1025:500 V , 1000 V , 2500 V , 5000 V , 10000 V , V L MIT1525:1000 V , 2500 V , 5000 V , 10000 V , 15000 V , V L Lock test voltage100 V L to 1 kV in 10 V steps, 1 kV to 5 kV in 25 V steps, 5 kV to 15 kV in 25 V steps Test voltage accuracy+4%, -0%, ±10 V nominal test voltage at 1 GΩ load (0°C to 30°C)Resistance range10 kΩ to 15 TΩ @ 5 kV , 10 kΩ to 20 TΩ @ 10 kV , 10 kΩ to 30 TΩ @ 15 kVAccuracyMIT515, MIT525 accuracy (23 °C) 5000 V 2500 V 1000 V 500 V250 V±5% from 1MΩ to 1 TΩ 500 GΩ 200 GΩ 100 GΩ 50 GΩ ±20% from 1MΩ to 10 TΩ 5 TΩ 2 TΩ 1 TΩ 500 GΩ MIT1025 accuracy (23 ºC) 10 kV 5000 V 2500 V 1000 V500 V±5% from 1MΩ to 2 TΩ 1 TΩ 500 GΩ 200 GΩ 100 GΩ±20% from 1MΩ to 20 TΩ 10 TΩ 5 TΩ 2 TΩ1 TΩMIT1525 accuracy (23 ºC) 15 kV 10 kV 5000 V 2500 V 1000 V ±5% from 1MΩ to 3 TΩ 2 TΩ 1 TΩ 500 GΩ 200 GΩ±20% from 1MΩ to 30 TΩ20 TΩ10 TΩ5 TΩ2 TΩGuard terminal performanceGuards out parallel leakageresistance down to 250 kΩ with a maximum additional resistance error of 1% with a 100 MΩ load DisplayAnalogue : 100 kΩ to 10 TΩDigital: 10 kΩ to max a above Short circuit/charge current 3 mA @ 5 kV , 10 kV , 15 kV Insulation testAlarm: 100 kΩ to 10 GΩTEST LEADS SUPPLIEDThe MIT515. MIT525, MIT1025 and the MIT1525 are all supplied with test leads that are compliant with the requirements ofIEC61010-031:2008. The 5 kV models are supplied with one 3m lead-set with medium sized clips. The 10 kV models are supplied with two 3m lead-sets, one with medium sized clips and the other with large clips with insulation suited to 10 kV use and the 15 kV models supplied with a 3m lead-set, with large clips with insulation suited to 15 kV use.These leads are designed based on Megger’s extensive knowledge of insulation testing using the latest technology. The leads are in compliance with IEC61010-31:2008 which requires a fully insulated clip design.MEDIUM INSULATED TEST CLIP 3 M X 3 LEADSET - 5 KV AND 10 KVThese test leads are supplied as standard on MIT515, MIT525 and the MIT1025.These clips are designed for clamping on larger diameter test pieces but where space is at a premium.The insulation is designed only to protect the user from the output of Megger 5 kV and 10 kV (set below 6 kV) insulation resistance testers. The clips cannot in any circumstance be relied on to protect the user from live ac systems above 600 V a.c., r.m.s. in an CAT IV environment.Cable insulation rating: 12 kV dc (marked on cable)Cable type: flexible dual insulated silicon (inner insulation layer coloured white tohighlight damageCapacitor chargeMIT515, MIT525 <3 s/μF at 3 mA to 5 kV MIT1025 <5 s/μF at 3 mA to 10 kV MIT1525 <7.5 s/μF at 3 mA to 15 kV Capacitor discharge<120 ms/μF to discharge from 5000 V to 50 V (MIT515 and MIT525)<250 ms/μF to discharge from 10000 V to 50 V (MIT1025)<3500 ms/μF to discharge from 15000 V to 50 V (MIT1525)Capacitance range With test voltage set above 500 VMIT515, MIT525 MIT1025: 10 nF to 25 μF MIT1525: 10 nF to 50 μFCapacitance measurement accuracy ±10% ±5 nF Current range 0.01 nA to 6 mACurrent accuracy ±5% ±0.2 nA at all voltages (23 °C)InterferenceMIT515, MIT525: 3 mA from 450 V to 5 kV MIT1025: 3 mA from 960 V to 10 kV MIT1525: 6 mA from 2100 V to 15 kV Voltmeter range 30 V to 660 V ac or dc, 45Hz – 65Hz Voltmeter accuracy ±3%, ±3VTimer range Up to 99 minutes 59 seconds, 15 second minimum setting Memory capacity5.5 hours logging @ 5 sec intervals(MIT525, MIT1025 and MIT1525 only)Test modesMIT515: IR, IR(t), DAR, PIMIT525, MIT1025 and MIT1525: IR, IR(t), DAR, PI, SV , DD, ramp testInterfaceUSB type B (device)(MIT525, MIT1025 and MIT1525 only)Real time output1 Hz output readings (V , I, R) (MIT525, MIT1025 and MIT1525 only)ENVIRONMENTAL Maximum altitude3000 m (5 kV , 10 kV)3000 m (15 kV)Operating temperature range -20 °C to 50 °C Storage temperature range -25 °C to 65 °CHumidity 90% RH non-condensing at 40 °C IP rating IP65 (lid closed), IP40 (lid open)SAFETYMIT515, MIT525 MIT1025: CAT IV 600 V to 3000 m altitude MIT1525: CAT IV 1000 V to 3000 m altitude Meets the requirements of IEC 61010-1,TEST LEADS SUPPLIED CONT.MEDIUM INSULATED TEST CLIP 3 M X 3 LEADSET - 15 KVThese test leads are supplied as an option on the MIT1525.These clips are designed for clamping on larger diameter test pieces but where space is at a premium.The insulation is designed only to protect the user from the output of Megger 15 kV (set below 6 kV) insulation resistance testers.The clips cannot in any circumstance be relied on to protectthe user from live ac systems above 1000 V a.c., r.m.s. in an CAT IV environment.Cable insulationrating: 15 kV dc(marked on cable)Cable type: flexibledual insulated silicon(inner insulation layercoloured white tohighlight damage These test leads may also be supplied in none standard lengths to suit a particular application.Please contact Megger for a quotation. Minimum order quantities may apply.LARGE INSULATED TEST CLIP 3 M X 3 LEADSET These test leads are supplied as standard on MIT1025 and MIT1525 Models (different leadset dependant on model)These clips are designed for clamping on larger diameter test pieces. The insulation is designed only to protect the user from the output of Megger 5 kV, 10 kV and 15 kV insulation resistance testers.The clips cannot in any circumstance be relied on to protect the user from live ac systems above 600 V a.c., r.m.s. in an CAT IV environment.10 kV lead setCable insulation rating:12 kV dc (marked on cable)Cable type: flexible dualinsulated silicon (innerinsulation layer colouredwhite to highlight damage)15 kV lead setCable insulation rating:18 kV dc (marked on cable)Cable type: flexible dualinsulated silicon (innerinsulation layer colouredwhite to highlight damage) The design of the lead sets is intended to facilitate connectionto a variety of de-energized systems for the purpose of making insulation resistance measurements. In all cases it is the responsibility of the user to employ safe working practices and verify that the system is safe before connection. Even isolated systems may exhibit significant capacitance which will become highly charged during the application of the insulation test. This charge can be lethal and connections, including the leads and clips, should never be touched during the test. The system must be safely discharged before touching connections.DESIGNED FOR EVERYDAY USETest leads are a key component of any precision instrument and that safety, long life, and the ability to provide reliable connections to a variety of test pieces found in everyday applications are of the utmost importance. Megger design test leads for both safety and practical operation.LOCKING HV INSULATED PLUGS/NON-REMOVABLE TEST CLIPSAll Megger 5 kV, 10 kV and 15 kV insulation testing test leads are fitted with unique locking HV plugs and non-removable test clips. This reduces the likelihood of a plug or clip inadvertently losing electrical connection and the capacitance of a long cable remaining lethally charged.With the arrows on the plug finger guard horizontal on the instrument as shown to lock. Twist 90º to to unlock. In addition,for the same reason, the test clips are not removable from the test lead.PRACTICAL INSULATION DESIGNMoving jaw fingers maintain the clips touch proof safety when clip is closed but flex back to allow metal teeth of the clip to contact test piece unimpeded when in use.Megger clip beingtested with IECstandard testfinger for creepageand clearance.PRACTICAL JAW DESIGNCurved jaws allow reliable connection around test piecesand flat jaw tips provide excellent connection and grippingof individual wires.OPTIONAL TEST LEADSMEDIUM AND LARGE TEST CLIPSTest leads above with medium and large size insulated clips are available supplied as an option in 5m, 8m, 10m and 15m lengths. These are listed in the ordering information panel at the endof this data sheet. These test leads may also be suppliedin non-standard lengths to suit a particular application/ requirement. Please contact Megger for a quotation, minimum order quantities may apply.Versions available for all MIT modelsCOMPACT TEST CLIP LEADSThese clips are designed for clamping on test pieces where access is limited. There is no insulation on these clips.Extreme caremust be taken toavoid electric shockwhen connecting/disconnecting dueto the bare metallicclips.Cable insulationrating: 12 kV dc(marked on cable) Cable type: flexible dual insulated silicon (inner insulation layer coloured white to highlight damage)Fits: MIT515, MIT525 and MIT1025COMPACT TEST CLIP WITH 5 OR 10 KV SCREENED CABLEThe clips are designed for clamping on test pieces where access is limited. There is no insulation on these clips. Extreme care must be taken to avoid electric shock when connecting/ disconnecting due to the bare metallic clips.The screened test lead set consists of:■■A black/negative test lead that has been screened.■■A red/positive test lead that is not screened.Cable insulation rating: 5 kV or 10 kV dcCable type: flexible screened PVCNote: Screened test leadsare an important accessoryfor those working in highnoise environments, and/or locations where testlead leakage could be aproblem.Fits: MIT515, MIT525 andMIT1025LARGE TEST CLIP WITH 15 KV SCREENED CABLE Relative motion between unshielded long leads for a D.C. test causes a variation in capacitance between them. This in turn causes very low frequency currents to flow, creating interference with the D.C. being measured. In addition induced current from nearby cables or radiated noise from corona around HV bushings can interfere with measurements causing unstable readings. This can be greatly reduced by using a screened lead set.The screened test lead set consists of:■■A black/negative test lead that has been screened.■■A red/positive test lead that is not screened.Cable insulation rating: 15 kV dcCable type: flexiblescreened PVCNote: Screened test leadsare an important accessoryfor those working in highnoise environments, and/or locations where test leadleakage could be a problem.Fits: MIT1525CONTROL CIRCUIT TEST LEAD SETSThis probe and clip leadset is designed for testing low voltage circuits with test voltages up to 1 kV.The insulation is designed only to protect the user from the outputof Megger 5 kV, 10 kV and 15 kVinsulation resistance testers setto a maximum output voltage of1 kV. Do not use this leadset atvoltages above 1 kV.Cable insulation rating: 1 kV dcFUSED TEST PROBE AND CLIP LEAD SETThis fused probe and clip leadset is designed for testing low voltage circuits with test voltages up to 1 kV. The leadset is GS38 compliant, fitted with FF500mA 50 kA fuses, which allows voltage measurements to be made in safety when using the user selectable voltage measuring range on the MIT515, MIT525, MIT1025 and MIT1525 instruments.The insulation is designed only toprotect the user from the output ofMegger 5 kV and 10 kV insulationresistance testers set to a maximumoutput voltage of 1 kV. Do not usethis leadset at voltages above 1 kV.Cable insulation rating: 1 kVMore detailed information can be found on the 5 kV, 10 kV and 15 kV insulation tester lead sets application note. This document can be downloadedfrom: UKArchcliffe Road Dover CT17 9EN EnglandT +44 (0) 1304 502101 F +44 (0) 1304 207342 ******************UNITED STATES4271 Bronze WayDallas TX 75237-1019 USAT 800 723 2861 (USA only)T +1 214 333 3201F +1 214 331 7399******************OTHER TECHNICAL SALES OFFICESValley Forge USA, College Station USA,Sydney AUSTRALIA, Danderyd SWEDEN,Ontario CANADA, Trappes FRANCE,Oberursel GERMANY, Aargau SWITZERLAND,Kingdom of BAHRAIN, Mumbai INDIA,Johannesburg SOUTH AFRICA, Chonburi THAILANDCERTIFICATION ISORegistered to ISO 9001:2000 Cert. no. Q 09290MIT515--MIT525--MIT1025--MIT1525_DS_en_V06Megger is a registered trademarkDescription Order Code Description Order CodeMIT515-UK 1001-935 MIT515-US 1001-936 MIT515-EU 1001-937 MIT515-AU 1001-938 MIT525-UK 1001-939 MIT525-US 1001-940 MIT525-EU 1001-941 MIT525-AU 1001-942 MIT1025-UK 1001-943 MIT1025-US 1001-944 MIT1025-EU 1001-945 MIT1025-AU 1001-946 MIT1525 UK 1002-907 MIT1525 US 1002-909 MIT1525 EU 1002-908 MIT1525 AU 1002-910Included AccessoriesPower leadUSB cablePowerDB Lite softwareProduct information CDIncluded accessories (5 kV, 10 kV, 15kV)3 m lead set, medium size insulated clips(MIT515 and MIT525 only) 1002-531 3 m leadset x 3, large insulated clips(MIT1025 only) 1002-534 3m leadset x 3, large 15 kV insulated clips(MIT1525 only) 1002-949Optional Accessories 1 kV test lead sets(MIT515, MIT525, MIT1025 only)Fused test probe and clip lead set 1002-913 CONTROL CIRCUIT TEST SET 6220-822Optional accessories – 1 kV test lead sets(MIT1525 only)Fused test lead set with probes and clips(2 x leads, 1.25m) 1005-265 Control circuit test lead set (2 x leads, 3m) 1005-264HV test leads sest (MIT515, MIT525, MIT1025 only)* These test leads may also be supplied in non-standard lengths to suit a particular application / requirement. Please contact Megger for a quotation, minimum order quantities may apply.3 x 5 m with large insulated clips 1002-6453 x 8 with large insulated clips 1002-6463 x 10 m with large insulated clips 1002-6473 x 15 m with large insulated clips 1002-6483 x 5 m with medium insulated clips 1002-6413 x 8 m with medium insulated clips 1002-6423 x 10 m with medium insulated clips 1002-6433 x 15 m with medium insulated clips 1002-644 COMPACT, BARE TEST CLIP: Lead length: 3 m 8101-181 COMPACT, BARE TEST CLIP: Lead length:5 m 8101-182 COMPACT, BARE TEST CLIP: Lead length: 15 m 8101-183HV test lead sets (MIT1525 only)5 m lead set, large size insulated clips (3 x leads) 1005-25910 m lead set, large size insulated clips (3 x leads) 1005-26015 m lead set, large size insulated clips (3 x leads) 1005-2613 m lead set, medium size insulated clips (3 x leads) 1005-26210 m lead set, medium size insulated clips (3 x leads) 1005-263Screened - HV test lead sets(MIT515, MIT525, MIT1025 only)1 x 3 m, wtih 5 kV screened un-insulatedsmall clips 6220-8351 x 15 m, with 5 kV screened un-insulatedsmall clips 6311-0803 m, 10 kV screened un-insulated small clips 6220-83410 m, 10 kV screened un-insulated small clips 6220-86115 m, 10 kV screened un-insulated small clips 6220-833Screened HV test lead sets (MIT1525 only)3 m, 15 kV screened, large size insulated clips,supplied in carry holdall 1005-26610 m, 15 kV screened, large size insulated clips,supplied in carry holdall 1005-26715 m, 15 kV screened, large size insulated clips,supplied in carry holdall 1005-26820 m, 15 kV screened, large size insulated clips,supplied in carry holdall 1005-269OtherCB101; 5 kV Calibration Box 6311-077 Calibration certificate - CB101 1000-113 UKAS calibration certificate CB101 1000-047。

目录安全须知 (2)一.简介 (3)二.技术规格 (4)三.结构 (6)四.LCD显示器 (7)五.测量原理 (8)六.操作 (9)1．基本操作 (9)2．测试 (10)七.电池管理 (14)八.装箱单 (14)1安全须知●本仪表根据IEC61010安全规格进行设计、生产、检验。

●任何情况下，使用本仪表应特别注意安全。

●本仪表的USB接口与内部电路为非隔离接口，严禁在测试电压的时候连接电脑，否则会烧坏仪表或引起触电事故。

必须先将测试线拔出仪表后才能连接USB数据线到电脑读取数据。

说明书中的在线监测不适用于监测电压。

●注意本仪表机身的标贴文字及符号，所规定的测量范围及使用环境。

●使用前应确认仪表及附件完好，仪表、测试线绝缘层无破损、无裸露、无断线才能使用。

测量过程中，严禁接触裸露导体及正在测量的回路。

●测量前请先确认FUNCTION功能旋钮已设定在适当的量程范围内。

●确认导线的连接插头已紧密地插入仪表接口内。

●请勿在测试端与接口之间施加超过600V的交流电压或直流电压，否则可能损坏仪表。

●请勿在易燃性场所测量，火花可能引起爆炸。

●仪表在使用中，机壳或测试线发生断裂而造成金属外露时，请停止使用。

●请勿将仪器长时间放置在高温潮湿、日光直射的环境下。

●若仪器受潮，请将仪器干燥处理后再进行存放保管。

●更换电池时请确认测试线已移离仪表，FUNCTION旋钮处于“OFF”位置。

●仪表显示电池电压低符号，应及时给电池充电。

●长时间不用本仪表，请每隔3个月给电池充电。

●使用、拆卸、校准、维修本仪表，必须由有授权资格的人员操作。

●由于本仪表原因，继续使用会带来危险时，应立即停止使用，并马上封存，由有授权资格的机构处理。

●使用者须注意仪表及手册中的安全警告标志，严格依照本手册内容进行安全操作。

一.简介数字式接地电阻测试仪是按新的防雷接地电阻检测标准而设计制造的，短路测试电流达10mA、3线法或简易2线法测量接地电阻，导入FFT(快速傅立叶变换)技术、AFC(自动频率控制)技术、采用数字滤波算法，自动识别干扰并选择测量频率，使干扰的影响最小化，提供更加准确的接地电阻值。

接地电阻系列测试仪使用说明第一节 MS2520A MS2520C接地电阻测试仪使用说明一、概述MS2520A/MS2520C型接地电阻测试仪适用于测量各种电机、电器、仪器仪表、家用电器等设备外壳与其接地线之间的电阻值。

本仪器具有二档测试电流，测试时间设定（1s～99s）。

当被测值超过100 mΩ(AC 25A)或200 mΩ（AC 10A）时，具有声光报警功能，并有过电流（AC 30A）保护功能，本仪器具有测量准确，操作方便，体积小等功能。

本测试符合国家标准GB4706.1家用和类似用途电器的安全通用要求中有关条款规定。

二、主要技术指标及参数三、工作原理图(1) 全数显接地电阻测试仪工作原理图四、仪器面板结构及说明1.MS2520A/MS2520C接地电阻测试仪面板结构见图（2）和图（3）所示：图(2) 全数显MS2520A/C接地电阻测试仪前面板示意图图(3) 全数显MS2520A/C接地电阻测试仪后面板示意图（1）电源开关（2）电流调节旋钮（3）启动按钮（4）复位按钮（5）10A/25A选择开关（6）测试时间显示屏（7）测试电阻显示屏（8）测试电流显示屏（9）测试灯（红灯）（10）超阻灯（绿灯）（11）过电流灯（黄灯）（12）时间开关（13）时间预置（14）测量端（电压端）（15）测量端（电压端）（16）测量端（电流端）（17）测量端（电流端）（18）带熔断器电源插座（19）接地端2.MS2520F接地电阻测试仪前面板结构见图（4）所示：图(4) 全数显MS2520F接地电阻测试仪前面板示意图(1). 电源开关：按下打开电源,弹起关闭电源。

(2). 电流调节旋钮：用来调节测试电流大小，逆时针旋转变小。

(3). “启动”按钮：作为测试的起动开关。

(4). “复位”按钮：是设定参数数值输入的功能健，在测试时，作为开关闭敬报声位复开关。

在测试进行中，可作为中断测试的开关。

(5).“SET”键：作为设定其各项参数的确认键。

M I3123通用接地电阻测试仪—德国美翠M E T RE L官网：/具体说明：MI3123通用接地电阻测试仪主要特点：l 包含接地电阻测试的所有方法：标准四线法、选择电极法、双钳法、土壤电阻率丈量l 钳式电流丈量功能，范围0-20A，分辩率0.1mAl 抗干扰能力强l 预编程限值，通过/不通过（PASS/FAIL）评价丈量结果l 绿/红指示提供直观的丈量结果评价l 适合CAT IV 装置验收l 内置磁铁可将仪器固定在铁质材料上l 内置充电器l 可存储1900个丈量结果l USB/RS232通讯接口，与PCSW软件兼容l 坚固、精巧的仪器外观设计符合标准：IEC/EN 61557-1、5、10，IEC/EN 61010-1，IEC/EN 61326，MI3123通用接地电阻测试仪技术指标：四线法/选择电极法丈量接地桩接地电阻自动测试电压信号中干扰自动测试测试电压（开路）40V 测试频率125Hz最大测试电流20mA 电流钳测试电流过低指示电流信号中干扰过大指示双钳法丈量接地电阻测试频率125Hz、干扰指示、电流过低指示土壤电阻率丈量等距法，r=2pDR电流丈量频率范围：40-500HzMI3123通用接地电阻测试仪基本技术参数电源：五号1.5V充电电池，6节，操纵时间大约10小时过压保护：50V CAT IV显示：128X64带背光液晶屏尺寸：14cmX8cmX23cm重量：0.85kg订购信息：标准配置：主机、20米测试线及接地桩1套、充电电池及充电器、A1018电流钳、A1019电流钳、使用说明书选件A1290软件S2007 50米测试线编辑者：智昊电子科技热线：0755-82554联系人：蔡小姐。

接地电阻测试仪使用说明目录1.产品概述2.技术参数3.器件准备3.1接地电极选择3.2接地电极安装4.测试方法4.1基本操作步骤4.2测试之前的准备4.3测试步骤5.结果分析6.使用注意事项7.故障排除8.售后服务1.产品概述2.技术参数-测量范围：0-200Ω-分辨率：0.1Ω-测量电流：100mA-电源：220VAC，50Hz-工作环境温度：0-50℃，相对湿度<80%3.器件准备3.1接地电极选择选择接地电极时，应根据实际测试环境和要求选择合适的电极类型。

常见的接地电极有铜杆、钢杆和不锈钢杆等。

根据接地系统的规模和土壤特性，选择适当的电极。

3.2接地电极安装安装接地电极时，首先选好合适的位置，然后将电极嵌入土壤中。

确保接地电极与土壤充分接触，并使用适当的工具将电极固定。

确保电极安装牢固，以免影响测量结果。

4.测试方法4.1基本操作步骤以下是接地电阻测试仪的基本操作步骤：1）确保接地电阻测试仪的电源开关处于关闭状态。

2）将测试仪的测试线（红色线）的夹子夹住要测量的接地电极。

3）将另一根测试线（黑色线）的夹子夹住测试仪的夹钳。

4）将测试仪的电源线插入220VAC电源插座。

5）打开测试仪的电源开关。

6）根据需要调整测试仪的测试范围。

4.2测试之前的准备在进行接地电阻测试之前，需要进行以下准备工作：1）确保接地系统无外电源输入，以免干扰测试结果。

2）清理接地电极及测试仪器的接线夹，确保良好的接触。

3）根据测试的环境要求，选择合适的测试范围。

4）检查测试仪器的电源线和测试线是否连接正确。

4.3测试步骤以下是接地电阻测试的步骤：1）按下测试仪的“启动/停止”按钮开始测试。

2）测试仪将发送一定大小的电流到接地电极。

3）测试仪会自动测量电阻值，并在显示屏上显示结果。

4）等待测试仪稳定后，记录电阻值。

5）如果需要重复测试，可以按下“清除”按钮重新开始。

5.结果分析6.使用注意事项1）测试仪器应由专业人员操作。

接地电阻测试仪MI2125简介接地电阻测试仪是一种专门用于测试接地电阻的仪器。

它可以准确测量接地电阻的大小，判断接地情况是否良好。

MI2125是一种智能化的接地电阻测试仪，具有多项功能和特点，包括自动电流上升和下降、自动双极性电流测试、峰值测量、自动范围切换等。

工作原理接地电阻测试仪的工作原理是利用传感器对电路中的电流、电压进行监测和测试。

在测试时，该仪器会先向被测试的电路中注入一定的电流，然后测量电路电压，并根据欧姆定律和基尔霍夫电压定律计算出电路的接地电阻值。

MI2125的工作原理与普通的接地电阻测试仪类似，但具有更高的测试精度和更完善的自动化测试功能。

技术特点MI2125接地电阻测试仪具有以下技术特点：自动电流上升和下降MI2125能够自动调整测试电流的大小和上升、下降速度，从而保证测试结果的准确性和一致性。

自动双极性电流测试MI2125支持双极性电流测试，可以在测试之前自动选择正负电流，无需手动干预。

峰值测量MI2125可以记录测试过程中的峰值电流和电压，具有更高的测试精度和更完整的数据记录功能。

自动范围切换MI2125具有自动范围切换功能，能够自动选择合适的测试范围，并在测试过程中实时调整测试范围。

通信接口MI2125具有USB、RS232和RS485等通信接口，方便用户在PC端进行数据处理和记录。

应用领域MI2125接地电阻测试仪广泛应用于以下领域：建筑施工在建筑施工中，MI2125可以用来测试建筑物的接地情况，判断是否符合相关的安全标准和规定。

电力行业在电力行业中，MI2125可以用来测试电力设备的接地情况，保证电力设备的安全性和稳定性。

工程监理工程监理人员可以利用MI2125监测施工工程现场的接地情况，以确保工程质量和施工安全。

总结MI2125接地电阻测试仪是一种先进的测试仪器，具有很多先进的功能和特点，适用于多个领域。

在使用该仪器时，应注意相关的操作规程和测试标准，以确保测试结果的准确性和可靠性。