Megger MOM690A Low Resistance Ohmmeter with Memory
There are three versions of the Megger MOM690 available. Choose between:
- BB-42300: Megger MOM690 with no Accessories
- BB-42390: With Accessories
- BB-42392: With Accessories and 15m Lead
About the Megger MOM690A Low Resistance Ohmmeter
Megger's MOM690A is a portable system for measuring contact resistance on high voltage equipment.
This is the upgraded version of the Megger MOM600A. The MOM690A is the only model in the series which has built-in memory storage for your results. With full support for download to PC using Megger's optional MOMWin software, you can set ranges automatically, measure resistance continually and automatically capture readings at a preset test current. If you're been looking for an automated, easy to use low resistance measurement solution, the Megger MOM690A more than fits the task.
The MOM690A also has expanded range compared to the MOM600A, with 0-800A DC current output or 660A AC current output. In the AC mode. the MOM690A can be used to test a breaker with a CT mounted in its current circuit, or can be used as a general multi-purpose current source in many different applications.
A Closer Look At the MOM690A's Interface
- 1) Ground Terminal
- 2) Miniature Circuit Breaker for Mains
- 3) Connection for Mains Voltage
- 4) Switch for Mains Voltage
- 5) DC Current Output
- 6) Common Output Terminal
- 7) AC Current Output
- 8) Voltage Measurement Input
- 9) Setting Selector
- 10) Function Selector
- 11) Interrupts Current and Toggles Display Between Resistance and Voltage
- 12) Variable Transformer
- 13) Display
- 14) RS232 Serial Interface
Megger MOM690A Low Resistance Ohmmeter Key Features
- Easy to use, rugged and reliable system for measuring low resistance levels in HV applications
- 0-800A DC current range
- 660A AC current range
- Built-in memory storage with PC transfer (requires optional MOMWin software)
- AC mode doubles up as a current source
- Make testing easier with automatic range settings
What's Included?
- Megger MOM690A Ohmmeter
- GA-05055 Cable Set (if accessory bundle is purchased)
- Ground Cable (GA-00200) (if accessory bundle is purchased)
Megger MOM690A Technical Specifications
Specifications are valid at nominal input voltage and an ambient temperature of +25°C, (77°F). Specifications are subject to change without notice.
| Environment | |
|---|---|
| Application Field | Intended for use in HV substations and industrial environments |
| Temperature | Operating: 0 to 50°C (32 to 122°F) Storage/Transport: -40 to +70°C (-40 to 158°F) |
| Humidity | 5 to 95% RH, non-condensing |
| CE-Marking | |
| EMC | 2004/108/EC |
| LVD | 2006/95/EC |
| General Specifications | |
| Mains Voltage | 230V AC, 50/60Hz |
| Power Consumption (Max) | 9660VA |
| Protection | Miniature circuit breaker, thermal fuse, software |
| Dimensions | Instrument: 350 x 270 x 220mm Transport Case: 610 x 290 x 360mm |
| Weight | 23.7kg (38.6kg with accessories and transport case) |
| Available Languages | English, French, German, Spanish and Swedish |
| Current Cables | 2 x 5m (16ft), 50mm² |
| Sensing Cables | 2 x 5m (16ft), 2.5mm² |
| Optional Current Cable Sets | Ext 1: Extension 2 x 5m, 50mm² Ext. 2: Extension 2 x 10m, 50mm² 2 x 15m: 95mm² |
| Ammeter | |
| Range | 0 to 800A |
| Resolution | 1A |
| Inaccuracy | 100 – 800 A, ±1% of reading + 1 digit 50 – 99 A, ±(2% of reading + 2 digits) 0 – 49 A, not specified |
| Resistance | |
| Range | 0 to 200mΩ, >200mΩ not specified |
| Resolution | 1μΩ |
| Inaccuracy | 100 – 800 A, ±1% of reading + 1 digit 50 – 99 A, ±(2% of reading + 2 digits) 0 – 49 A, not specified |
| SKU | MEGGER-MOM690 |
|---|---|
| Manufacturer Part Code | BB-42300 |
