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Megger BM5200

Megger BM5200 5 kV Insulation Tester
 
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Megger BM5200 5 kV Insulation Tester

 
 

 
 

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Megger BM5200
Catalog #: 1001-289
         
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BM5200 5kV Insulation Tester Contractor Battery Powered

Features

  • 1 T Ω, 1.4 Ma, 5 kV digital insulation tester with digital and analogue display
  • Five test ranges; 250 V, 500 V, 1000 V, 2500 V and 5000 V
  • Insulation (InS), Polarisation Index (PI) and variable timed test (t) modes
  • Selectable DC or AC (including frequency) voltmeter functions
  • Guard terminal to shunt surface leakage currents
  • CATIII 600 V safety rating
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Product Information

Megger BM5200 5 kV Insulation Tester

 
Megger_BM5200_tn
  • New section “Prevention of HAZARD from arc flash and short-circuits” added
  • Safety rated at CATIII 600V
  • Applied test voltage measurement display
  • Selectable DC or AC (including frequency) voltmeter functions
  • Guard terminal to shunt surface leakage currents
The Megger BM5200 tester is a battery powered instrument with digital and analogue arc display, designed for high voltage insulation resistance testing in the maintenance and servicing of cables, rotating plant machinery, transformers, switchgear and industrial installations.

 

DC insulation tests are performed at 250 V, 500 V, 1000 V, 2500 V and 5000 V. Insulation resistance measuring range is 100 kΩ to 1000 GΩ. Automatic discharge for capacitive circuits under test is provided and decaying voltage displayed.

The guard terminal can be used to minimise the effects of surface leakage and hence erroneous measurements when carrying out insulation resistance tests.

Three insulation resistance (IR) test modes are provided, (InS, PI and t) and available in any IR test range. In IR mode (InS) tests are initiated by pressing and holding down the TEST button for two seconds and terminated by a second press of the TEST button. A Polarisation Index (PI) mode performs a ratio metric test that calculates the ratio of insulation resistance at ten minutes to insulation resistance at one minute. The IR test timer (t) mode facilitates a single fixed time test based on the set time interval t.

For capacitive test objects the instrument will automatically discharge through an internal resistor and indicate voltage across the terminals in the range 25 V to 600 V with higher voltages indicated by ‘>600 V’. This feature will give decaying voltage indication following the testing of reactive loads. When the voltage indicator disappears it is safe for the user to disconnect the test leads.

The BM5200 is powered by eight 1.5 V IEC LR6 (AA) cells. Design safety features include high voltage warning indicator, external voltage display after IR test, automatic discharge of reactive loads and test leads.

FEATURES AND BENEFITS

  • Compact, rugged insulation resistance tester
  • Easy operation and voltage range selection
  • AC and DC voltmeter (25 V - 600 V)
  • User settable IR test timer (default 1 min), (max. 19 m 50 s)
  • Soft carry case for instrument and leads
  • Quick start and full user guide

APPLICATIONS

Electrical insulating materials deteriorate with time leading to breakdowns and costly repair bills. Insulation resistance testers apply a regulated DC voltage across the insulation and measure current flow through it applying Ohm’s law to calculate insulation resistance. The current flows because no insulation material is perfect.

IR tester uses include:

  • Product test and qualification
  • Installation of equipment
  • Routine maintenance
  • Problem resolutions

Insulation testing with high voltage DC affects insulation polarisation such that consecutive testing without complete discharge of the unit under test will yield different results.

Care should be taken to always employ the same process and technique of connecting to and testing an insulator to be able to trend results. It is important to record temperature of the insulation as well as IR values.
 

Operating instructions

 
afebxcfuvzas Megger_BM5200-Operating-instructions

Operating Instructions

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The BM5200 is turned on by rotating the main range switch to insulation test, voltage test or setup function.

 

Instrument controls and indicators

  1. Backlit LCD display with analogue arc and dual 3-digit display.
  2. Backlight on/off switch
  3. Four arrow buttons, PI-t function on left arrow button
  4. Main range switch Setup functions plus AC and DC voltmeter (25 V to 600 V)
  5. Main range switch with DC insulation tests at 250 V, 500 V, 1000 V, 2500 V and 5000 V.
  6. TEST button to initiate and terminate insulation tests
  7. Warning High Voltage (HV) indicator

Before switching on the BM5200 the test leads should be connected to the instrument.
 

There are three test terminals marked +, - and G. These terminals are designed to accept only the test leads supplied. Shutters across the terminals prevent accidental ingress of dirt and other objects. Test leads lock in the terminals to prevent accidental removal during a test, rotate the plug until the locking action is engaged. Terminal plugs can be removed by rotating through a quarter turn.

At the end of a test ensure that the voltage has decreased to a safe value, i.e. <50 V, before removing the test leads. Reactive loads may take some time to dissipate stored energy through the instrument’s internal discharge resistors.

 
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The terminals are located on a panel to the rear of the instrument and marked +, - and G meaning Guard terminal.

What's In The Box

  • Carry case with lead storage (6420-117)
  • 3 m leads (6220-820)
  • User guide
  • Quick start guide

Specifications

General Specifications
Insulation range 100 kΩ to 1 TΩ
Nominal test voltages 250 V, 500 V, 1000 V, 2500 V, 5000 V
Terminal voltage accuracy <1000 V 0...+10% of nominal test voltage
≥1000 V 0...+5% of nominal test voltage
Insulation accuracy Up to 1 GΩ: All ranges ±5% ±2 digits
Over 1 GΩ 5000 V ±5% ±0.04% per GΩ
2500 V ±5% ±0.08% per GΩ
1000 V ±5% ±0.2% per GΩ
500 V ±5% ±0.4% per GΩ
250 V ±5% ±0.8% per GΩ
Short circuit current 1.4 mA ± 0.5 mA
Maximum load capacitance 5 µF
Voltmeter accuracy 3% ± 3 V
Frequency measurement 45 Hz to 65 Hz
Frequency accuracy ±2 Hz
Voltage range up to 600 V a.c. or d.c.
Power supply 8 x LR6/AA batteries
Battery life 5 hours @ 5 kV into 100 MΩ with AA Alkaline LR6
Guard 2% error guarding 5 MΩ leakage on 100 MΩ load
Environmental specifications
Operating temperature range -20 ºC to +55 ºC
Operating humidity 90% RH, 0 ºC to 40 ºC
70% RH, 40 ºC to 55 ºC
Storage temperature -20 ºC to +65 ºC
Insulation protection IP40
Maximum Altitude 2000 m
Service error with stated environmental limits is twice intrinsic error
Safety Protection Insulation Cat III 600 V
EMC The product conforms to IEC 61326
Dimensions (W, H, D) 220 mm x 115 mm x 163 mm
Weight 1.45 kg

Megger BM5200 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Micro / Milli / Meg Ohmmeters/Megohmmeter / Insulation Resistance Testers Template

Type What's This?Battery
IR Test Voltage What's This?5,000 V
Power SupplyBattery
CAT Rating What's This?III
CAT Voltage What's This?600 V

Test Equipment General Attributes

Unique Features5 kV insulation tester
Power Supply VoltageBattery Powered
IP Rating What's This?IP40
Product Weight3.2 LBS
Battery TypeAA
Product Height4.53 IN
Product Length6.42 IN
Product Width8.66 IN
Shipping Weight3.2 LBS
Country of OriginUnited Kingdom

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