Megger MHP1 and MHP2 HiPots are designed for workshop and production testing of electrical items.
Megger MHP1 and MHP2 HiPots are designed for workshop and production testing of electrical items. The MHP1 has an AC output voltage while the MHP2 offers both AC and DC outputs. A manually operated variac controls the test voltage. A simple jumper setting decides how the voltage is applied as follows: For short duration test the jumper is to toggle mode. Under this setting, the voltage is only applied as long as the start button is depressed. For longer duration tests, set the jumper to toggle mode. In this mode, the start button will begin the test voltage output, which will continue until the button is depressed. In either mode, the test voltage application starts at a zero crossing and will be applied without overshoot. At the end of a test , the stopping of the high-voltage output indicates a discharge of the item previously tested. The actual voltage present at the instrument terminals is displayed at all times, enabling the operator to monitor the discharge of an item that has just been subjected to a DC test. The MPH1 and MPH2 comply with most existing UL requirements for di-electric withstand testing, including:
UL544: Electric Medical and Dental Equipment
UL982: Motor Operated Household Food Preparing Machines
UL 1026: Electric Household Cooking and Serving Appliances
UL1270: Radio Receivers , Audio Systems, and Accessories
Test Fail Mode Both instruments may be used in three test modes: Breakdown only: This mode ignores the actual magnitude of the leakage current and look for a sharply rising waveform edge, characteristics of insulation breakdown. Trip: The second mode will only trip the test voltage if the leakage current flowing exceeds a pre-selected calibrated maximum. Breakdown/Trip: This mode is a combination of the two previous modes. The test voltage will be removed if either breakdown is detected or if the leakage current through the item under test exceeds a pre-set maximum. A simple rotary switch selects the maximum permissible leakage current from one of seven calibrated settings. Both instruments have visual indication of " High Voltage ON" , and visual and audible indication of a test failure. To facilitate a fixed insulation, both instruments are provided with the facility to attach various safety devices:
Safety interlocks may be attached to prevent the applications of high voltage unless safety barriers are in place.
A socket is provided to allow the use of the optional remote On/Off switch thereby ensuring the operators hands are well removed from th danger area
Terminals are provided for the connection of a warning beacon that illuminates whenever high voltage is present
Terminals are provided for external signalling of a test failure
Features
Conform to Ul testing
Meets UL 120k ohm requirement for sensitivity
Test voltage starts at zero crossing
Transient free voltage
Press to test or toggle
Calibrated trip settings
Three fail modes
Breakdown only
Excessive leakage only
Breakdown or excessive leakage
Optional remote on/off switch
Provision for safety interlocks
Additional Features
Remote switch: 5-pin DIN connector on rear of instrument allows connection of remote voltage ON/OFF switch (see optional accessories)
Safety interlocks" Provision on rear of instrument for wiring safety interlocks
Beacon: Provision on rear of instrument to wore in a "Voltage ON" warning beacon. Maximum current available 0.5A at 250 V ac.
SPECIFICATIONS
Power Supply
230 or 115V a.c. 50/60 Hz depending on model
Safety
Meets the requirements of IEC 1010-1 (1995) and EN61010-1 (1995)
EMC
Meets the requirements of EN5008-1, EN50082-1 (1992) and EN61326-1 (1998)
Temperature
Operating: 32° to 104°F (0° to 40°C)
Storage: 32° to 140° F (-20 to 60° C)
Humidity
Operating: 80% RH at 104° (40°C)
Dimensions
4-3/4hx11 W x W 11-1/2 D in. (70 H x 257 W x 280 D mm)
Weight
17.6 lb (8kg)
SPECIFICATIONS
Test Voltage
BD230215
0 to 3 kV AC continuously variable
BD230225
0 to 3kV AC
0 to 4 kV DC continuously variable
Ripple Content on
< 150 V AC peak to peak at 1 mA
DC range
Current trip settings
0.3, 0.5, 1.0, 2.0, 3.5, 5.0, 10.0mA. Peak or DC
Current trip accuracy
+5% of indicated value (+10% for 0.3mA setting)
Display
Voltage
Analog Movement 2.36 in. (60 mm) scale length
Accuracy
+2.5% of full- scale deflection
CAT NO.
MODEL
DEscRIPTION
AVAIL
PRICE
BD230215
MHP-1
AC HiPot
Yes
2,689,200
Includes: Low return lead, 4-kV high-voltage probe and power cord
BD230225
MHP-2
AC/DC HiPot
Yes
3,337,200
Includes: Low return lead, 4-kV high-voltage probe and power cord
BD121069
EV6420-061
OPTIONAL High-Voltage Gun Probe FOR MHP1 and MHP2 HiPots
Yes
324,000
BD121070
EV6220-641
OPTIONAL Remote On/Off Switch FOR MHP1 and MHP2 HiPots
Yes
594,000
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