<< Megger Megohmmeters / Insulation Testers

Megger BM11, BM21 and BM25
5 kV Insulation Testers

Spot Tests and Diagnostic insulation tests
Simplicity and Ease of Use
User safety features
Unique rugged casing
Analog and Analog/Digital Displays
Wide range of test voltages
Automated Testing (BM25 Only)

BM25 Shown

Product Information
Datasheet	133 KB
Specifications	HTML
Ordering Info
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The Megger® BM11 series of 5 kV Insulation Testers provides a choice of features to suit all applications and budgets.

The traditional BM11 instrument became the industry-standard 5 kV tester. It is battery-powered, housed in a rugged case and has a large, simple white-on-black scale.

The series has been extended with three analog/digital instruments; the BM11D, BM21 and BM25. These instruments show results and test options on a large, clear analog/digital scale for both practicality and precision. A built-in timer makes both spot tests and PI testing easier to carry out.

They are powered by a built-in rechargeable lead-acid battery which can be charged directly from any supply from 95 V to 265 V. All testers incorporate a guard terminal to allow surface leakage to be removed.

Pre-set standard test voltages at 500 V, 1000 V, 2500 V and 5000 V are supplemented on the BM21 and BM25 unit switch a variable test voltage in 25 V steps. These top of the range units also allow measurement of resistance to 5 TΩ,leakage current to 0,01 nA and can display capacitance at the end of a test to 10 µF.

The BM25 extends the diagnostic testing capability of the range by performing automatic Polarization Index, Step-Voltage and Dielectric Discharge tests as well as providing an optically isolated RS232 port for downloading results during a test.

	BM11D (218651)	BM21 (218621)	BM25
Test Voltage (VDC)	500 1000 2500 5000	500 1000 2500 5000 25 - 5000 (25V steps)
Insulation Resistance Range	10 kΩ - 50 GΩ (digital) 10 kΩ - 100 GΩ (digital) 10 kΩ - 250 GΩ (digital) 10 kΩ - 500 GΩ (digital) 100 kΩ - 1 TΩ (analog)	10 kΩ - 500 GΩ (digital) 10 kΩ - 1 TΩ (digital) 10 kΩ - 2.5 TΩ (digital) 10 kΩ - 5 TΩ (digital) 100 kΩ - 1 TΩ (analog)
Voltage Range	50-1000V (DC or AC)	50-1000V (DC or AC); 0-5000 VDC (when Testing)
Leakage Current Range	None	0.01 nA - 999 µA
Capacitance Range	None	0.0(1) 10 µA
Display	Digital/Analog	Digital/Analog Automated Testing
Power	Built-in Charger,95 to 265 VAC, 50/60 Hz (Lead Acid)

Ordering Information
Model	Description	Buy Online	Price
BM11	Megger BM11, Analog 5 kV Megger Insulation Tester; 500, 1000, 2500, 5000 V; 100 GOhms		$5,780.00
BM11D	Megger BM11D 5 KV Digital/Analog Insulation Tester (218651)	Discontinued See: MIT510
BM21	Megger BM21 5000 Volt Insulation Tester (218621)	Discontinued See: MIT520
BM25	Megger BM25, 5 KV Digital/Analog Insulation Tester - DISCONTINUED	Discontinued See: MIT520
Included Accessories
	BM11D, BM21, and BM25 Accessories (1) High Voltage Test Lead set (1) Mains Supply lead for charging (1) Accessory pouch (1) PC Connector lead (1) BM25 Download disk (BM25 only) (1) Test record Card Set (5 in pack) (1) User Guide		Included
Replacement Accessories
EV25955025	Megger EV25955-025, Computer Serial Lead for BMM2500 & BMM2580		$31.00
Optional Accessories
210962	Megger 210962, Set of Three 10 ft. Leads for 218650		$215.00
210968	Megger 210968, Set of Three 10 ft. Leads for 218651, 218621, BM25, BM15 & MJ15		$215.00
218748	Megger 218748, Soft Pack Fabric Case for 218650, 218651, 216621 and BM25		$145.00
CB101	Megger CB101, 5 kV Calibration Box		$645.00
EV6420096	Megger EV6420-096, Accessory Pouch for 218651, 218621 & BM25		$90.00

Megger BM11, BM21 and BM25 5 kV Insulation Testers

Megger BM11, BM21 and BM25
5 kV Insulation Testers