BM80/2 Series Multi-Voltage Analogue/Digital Insulation and

BM80/2 Series Multi-Voltage Analogue/Digital Insulation and
99 Washington Street
Melrose, MA 02176
Fax 781-665-0780
TestEquipmentDepot.com
BM80/2 SERIES
Multi-Voltage Analogue/Digital Insulation and Continuity Testers
BM80/2 Series
Multi-Voltage Analogue/Digital
Insulation and Continuity Testers
■
Fully complies with the requirements of
BS 7671, HD 384 and IEC 364
■
Multiple insulation test voltages from
50 V to 1000 V d.c. (according to model)
■
Remote control switched probe option
■
Optional RS232 port
■
Optional current clamp accessory
■
Waterproof and dustproof to IP54
DESCRIPTION
The Megger® BM80/2 Series are multi-voltage insulation
and continuity testers offering advanced performance,
specification and features, and simplicity of use. They have
insulation test voltages from 50 V to 1000 V d.c., (500 V
max. on BM81/2.) The comprehensive specification is
achieved using the latest electronic design and technology.
The analogue/digital LCD incorporates the benefits of
electronic arc analogue indication with unambiguous
digital readings. The analogue scale helps to make rapid
identification of insulation condition, and to monitor
variable readings, and is complemented by the precision
and simplicity of a digital display. All 3 instruments in the
range are identical except that the BM81/2 has a maximum
test voltage of 500 V and the BM82/2 has no continuity
range.
In compliance with BS 7671, IEC 364, HD 384 and VDE
0413 Part 1 and 4, the 250 V, 500 V and 1000 V insulation
ranges have a 1 mA test current at the minimum pass
values specified. The BM80/2 and BM81/2 continuity
ranges have a short circuit test current of approximately
205 mA in order to comply with the requirements of these
documents. Also on the continuity ranges, is the facility to
null the resistance of the test leads.
This enables direct readings of low resistance to be taken.
A continuity buzzer is included on the second continuity
range.
In addition to the insulation and continuity ranges, the
BM80/2 series has a resistance range which measures up
to 100 kΩ on the digital scale and up to 10 MΩ on the
analogue scale. Due to the low test voltage and current of
this range, it can be used to test circuits with sensitive
equipment connected, without causing damage.
Two voltage ranges measure up to 50,0 V and 600 V a.c. or
d.c. respectively, and indicate the presence of negative
d.c. A voltage warning is provided in these models,
alerting the user to the presence of external voltage
greater than 25 V, by displaying the voltage level, even
when measuring on insulation and continuity ranges. The
voltage range will indicate if capacitive charge remains
after a test, and will monitor the automatic discharge.
On all models testing is inhibited if 55 V is detected.
Hands free operation is offered as standard on all ranges
except the insulation ranges. Locking and non-locking test
buttons are provided with each instrument for user
selection. Use of the non-locking button is recommended
to prevent accidental mis-use and injury, and in cases
where continuous operation of an insulation test is
required the locking button can be fitted. Alternatively the
optional accessory Switched Test Probe SP1 can be used
enabling remote operation of the test button from the
negative test probe.
The BM80/2 series is rugged, and therefore suited to tool
bag treatment, as well as having an IP54 environmental
protection rating which ensures product reliability in wet
and dusty conditions. Exceptional battery life is provided
by six cells housed in separate battery compartment. The
instruments are designed to IEC 1010-1, VDE0411 and
BS4743 safety standards.
BM80/2 SERIES
Multi-Voltage Analogue/Digital Insulation and Continuity Testers
Model Selection Chart
Insulation Test Voltage
50
100 250 500
1000
Cont
Range
BM80/2
✓
✓
✓
✓
✓
✓
BM81/2
✓
✓
✓
✓
✘
✓
BM82/2
✓
✓
✓
✓
✓
✘
ELECTRICAL CONTRACTORS
The BM80/2 series, designed for flexibility and versatility, has a wide variety of applications and is ideal for testing
electrical installations to the British and International Wiring Regulations. Each instrument in the series conforms to the
requirements of Table 71 A in BS 7671, and to VDE 0413 parts 1 and 4, HD384 and IEC364.
The BM80/2 series can be used in both the domestic and industrial contracting environments. Test voltages of 250 V,
500 V and 1000 V d.c. are available. A 250 V insulation test voltage is necessary to test low voltage circuits supplied by an
isolating transformer. 500 V d.c. is the most commonly required voltage, since it is used to test all circuits except low
voltage circuits with a nominal voltage up to and including 500 V. The 1000 V d.c. test voltage is used on circuits with a
nominal voltage greater than 500 V and less than 1000 V.
The continuity ranges can be used to test the continuity of protective and ring final circuit conductors, and the polarity of
the conductors.
The BM80/2 series instruments can also be used for insulation and continuity tests on transformers, motors, generators,
domestic appliances, power tools, such as electric drills, and many other pieces of electrical equipment.
On high energy systems it is recommended that test leads with fused prods are used when measuring voltage. These are
available as an optional accessory.
SERVICE ORGANISATIONS
The BM80/2 series is ideal for use by Service Organisations due to the wide range of parameters which can be measured
with the instrument and its associated optional accessories.
The insulation test ranges are available for establishing the integrity of the insulation of internal parts such as motors and
transformers, as well as other equipment, and the continuity ranges can be used for circuit tracing and operational
checking of switches, etc.
With the resistance range measuring up to 100 kΩ on the digital display, and 10 MΩ on the analogue scale, basic
components such as resistors, capacitors and diodes can be tested for functionality.
Two voltage ranges (1-50,0 V and 0-600 V a.c./d.c.) enable internal mains voltages and power supply rail levels to be
measured, and with the addition of the MCC10 optional Current Clamp, appliance current consumptions can be measured
and compared to the rating plate.
These unique features offer measurement ranges and facilities not normally found in an Insulation Tester and could
therefore reduce the number of test instruments required by the Service Engineer.
ADVANCED APPLICATIONS
The addition of the DLB1 RS232 communication base will enable the BM80/2 family to produce a continuous output of
information corresponding to the value which is shown on the instrument display. The DLB1 is supplied complete with
DATA software which will enable the test information to be transferred to an IBM compatible computer.
This opens up applications for continuous monitoring of insulation resistance for the advanced user who may wish to
use the results for calculating Dielectric Absorption Ratios including Polarisation Index. The Polarisation Index Ratio is
defined as the ratio between insulation resistance values measured after 1 minute and 10 minutes; it is useful for
determining insulation quality without the need for temperature compensation or necessary referral to historical test
information.
The DLB1 when used in conjunction with the SP1 can also facilitate limited remote operation of the BM80/2 series for
applications where the product may need to be permanently installed in or near a piece of equipment.
TELECOMMUNICATIONS APPLICATIONS
In addition to the Installation Testing capabilities of the 1000 V, 500 V and 250 V insulation test ranges the BM80/2 series
incorporates 100 V and 50 V testing facilities. These low voltage insulation tests enable the instrument to be used for
checking delicate components and equipment which would otherwise be damaged by higher voltages.
The instruments are designed to perform insulation tests on systems with up to 55 V of electrical interference, or
BM80/2 SERIES
Multi-Voltage Analogue/Digital Insulation and Continuity Testers
crosstalk, without the accuracy or reliability of results
being effected and with no damage to the instrument.
A wide resistance measuring capability across the ranges
enables a degree of cable fault pre-location to be
performed by using resistance to fault methods, and the wide
voltage measuring capability allow accurate measurement of
line and battery voltages.
Open Circuit Voltage:
5 V, ±1 V
Short Circuit Current:
20 µA, ±5 µA Accuracy (at 20°C):
±3%, ±2 digits
VOLTAGE RANGE
Measuring Range
(i)
0 - 600 V a.c./d.c.
(ii)
1,0 - 50,0 V a.c./d.c.
SPECIFICATIONS
INSULATION RANGES
Nominal Test Voltage (d.c.):
Accuracy (at 20° C)
0-600 V Range <450 V a.c. (50/60 Hz) and d.c. ±1%, ±2 digits
50 V, 100 V, 250 V, 500 V and 1000 V
>450 V a.c. (50/60 Hz) and d.c. ±2%, ±2 digits
(1000 V not available on BM81/2.)
<450 V a.c. 400 Hz: ±5%, ±2 digits
Measuring Range
50 V range:
100 V range:
250 V range:
500 V range:
1000 V range:
1,0 - 50,0 V Range a.c./d.c. ±2%, ±3 digits
0–10 GΩ
0–20 GΩ
0–50 GΩ
0–100 GΩ
0–200 GΩ
TEMPERATURE COEFFICIENT
<0,1% per °C on all ranges.
Resolution: 0,01 MΩ
Terminal Voltage on Open Circuit (d.c.): +15% maximum
Test Current
1 mA minimum at the minimum pass values of insulation
specified in BS 7671 (formerly the 16th Edition IEE Wiring
Regulations)on the 250V, 500 V and 1000 V ranges.
50 V range:
0,2 mA at 250 kΩ
100 V range:
0,4 mA at 250 kΩ
Accuracy (at 20°C)
50 V range:
100 V range:
250 V range:
500 V range:
1000 V range:
±2% ±2 digits ±4% per GΩ
±2% ±2 digits ±2% per GΩ
±2% ±2 digits ±0,8% per GΩ
±2% ±2 digits ±0,4% per GΩ
±2% ±2 digits ±0,4% per GΩ
DEFAULT VOLTMETER
The default voltmeter operates when an external voltage >25 V
a.c. or d.c. is detected on any range except OFF and
. If this
voltage exceeds 55 V then insulation testing will be inhibited.
Reverse polarity d.c. will cause ‘-d.c.’ to appear on the DISPLAY.
BATTERY CONDITION TEST
If the batteries are low during a test, the symbol
will
appear automatically. The batteries can also be checked by
selecting the battery condition test position. This will indicate the
result as volts and as a bar.
AUTO SHUT-OFF
The instrument auto shut off operates 5 minutes after the start of
a test, on all ranges, except the insulation ranges where it
operates after 12 minutes. This can be adjusted to 60 minutes for
the voltage, continuity and KΩ ranges. Selecting an insulation
range or off will revert the shut-off to 5 minutes.
GENERAL SPECIFICATION
1100
1000V
1000
Operating Range
-20 - +40°C
Operating Humidity
90% R.H. at 40°C max.
Storage Range
-25 - +65°C
Environmental Protection
IP54
900
800
VOLT (d.c.)
700
600
500V
500
400
300
Fuse
Type
250V
200
100
0
0.01
100V
50V
0.1
1
10
100
500 mA (F) 440 V, 32 x 6 mm Ceramic HBC 10 kA minimum.
Glass fuses must not be fitted.
1000
RESISTANCE (MΩ)
Indication of a ruptured fuse is provided by the symbol
Typical Terminal Voltage Characteristics:
.
(0-50 Ω on analogue scale)
Safety
The instruments meet the requirements for double insulation to
IEC 1010-1 (1995), EN61010-1 (1995) to Category III, 300 V phase
to earth (ground) and 440 V phase to phase. Over voltage
measuring facilities exist to indicate capacitive discharges.
Open Circuit Voltage:
5 V, ±1 V
FUSE PROTECTED TO 440 V.
Short Circuit Current:
205 mA, ±5 mA
CONTINUITY RANGES (not BM82/2)
Measuring Range:
0,01 - 99,9 Ω
Accuracy (at 20° C)
Zero Offset Adjust:
Continuity Buzzer
±2%, ±2 digits
INSTALLATION CATEGORIES
Category III: Fixed wiring and installations within a building.
0 - 9,99 Ω
Operates at less than 5 Ω approx.
RESISTANCE RANGE
(can be used for diode testing)
Measuring Range:
0,1 - 100 kΩ (0 - 10 MΩ on
analogue scale)
AUTOMATIC DISCHARGE
When the test button is released after an insulation test the item
under test will be discharged automatically. Any voltage present
will be indicated on the display so that the discharge can be
monitored.
BM80/2 SERIES
Multi-Voltage Analogue/Digital Insulation and Continuity Testers
POWER SUPPLY
Battery Type
Battery Life
Accuracy:
±2%
6 x 1,5 V cells IEC LR6 type only.
Operating Temperature:
-10°C to +50°C <75% RH
3000, 5 second operations, at 1 kV worst
case
Storage Temperature:
-20°C to +75°C
Weight
625g (1,377 lbs approx.)
Dimensions
220 x 92 x 55 mm
(5,5 in x 2,33 x 2,16 in approx.)
EMC
In Accordance with IEC61326 including Amendment No.1
Type of Sensing: Induction coil for a.c. current
Max. Output Impedance:
75Ω
EMC
In accordance with IEC61326 including Amendment No.1
Max. Conductor Size:
15 mm dia. cable, or a
15 mm x 17 mm busbar.
Size (without leads):-
43 mm x 23 mm x 94 mm
Weight:
105 g
DLB1
The DLB1 optional accessory communication interface provides
an RS232 serial data output simultaneous to the displayed
readings.
SP1
The SP1 switched probe is available as an optional accessory. By
simply plugging the standard red positive lead into the
instrument, and with the switched test probe inserted into a
unique socket on the top of the insulation tester, tests can be
made by pressing the remote switch on the probe.
This remote operation significantly increases the ease of use of
the product and reduces the time taken to perform a test.
SPECIFICATION
When used in conjunction with the DATA software provided and
an IBM-compatible PC, long-term insulation monitoring and data
storage are possible.
DATA also enables test data to be presented in tabular form and
facilitates the printing of certificates.
SPECIFICATION
Baud Rate:
9600
Operating Range:
-20°C to +40°C
Operating Humidity:
90% RH @ 40°C max.
Operating Temperature Range: -20°C to +40°C
Storage Temperature Range: -25°C to +65°C
Operating Humidity: 90% RH @ 40°C max.
Safety:
Meets the safety requirements for double insulation to
IEC1010-1(1995) EN61010-1(1995) to Cat. III, 300 V phase
to earth (ground) and 500 V phase to phase.
Storage Temperature Range: -25°C to +65°C
Protection: IP54
Safety
Meets the safety requirements for double insulation to
IEC1010-2-31 (1995) EN61010-2-31 (1995) IEC1010-1 (1995)
EN61010-1 (1995) Category III, 300 V phase to earth and 500 V
phase to phase.
E.M.C.
In accordance with IEC61326 including Amendment No.1
Dimensions:
94 mm x 46 mm x 42 mm
Weight:
80 g
Weight: 155 g
ORDERING INFORMATION
Item (Qty)
MCC1
The MCC10 Current Clamp will connect to the instrument test
leads and enable direct indication of a.c. current to be displayed
on the 50,0 V measuring range. Measurement in the range of
1,0 A to 10,0 A a.c. can be made, with overload up to 16 A at
marginally reduced accuracy, and the clamp will span a
conductor of 15 mm. This current measuring feature, not
normally associated with insulation testers, greatly enhances the
product versatility and further increases the applications for
Electrical Contractors, Utilities and Service Organisations.
SPECIFICATION
Current Range:
1,0 A to 10 A a.c. R.M.S
Output Voltage:
1 V a.c. per 1 A a.c.
Order Code
Multivoltage Insulation & Continuity Testers
(no 1000 V range)
(no continuity range)
Included Accessories
Test lead set
Test & carry case
User Guide
Optional Accessories
Fused lead set FPK8
SP1
MCC10
DLB2
Test record card (Pack of 20)
BM80/2
BM81/2
BM82/2
6220-437
6420-112
6171-188
6111-218
6220-606
6111-290
6220-602
6111-216
Registered to ISO 9001:2000 Reg no. Q 09290
Registered to ISO 14001 Reg no. EMS 61597
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
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