Caddock VMN Series
The VMN series from Caddock are transient tolerant voltage monitoring resistor networks, with a resistance range from 5kΩ to 4.99MΩ with a total resistance of 2MΩ or 5MΩ. These resistors have a ratio tolerance of ±0.02% or ±0.1%, the ratio TCR (from -40°C to +85°C) values are: ±5 ppm/°C and ±10 ppm/°C. The Caddock VMN series is manufactured with Tetrinox®, Caddock’s ultra-stable low-TC resistance film system. The Tetrinox® film system, combined with Caddock’s ceramic sandwich resistor network construction, provides outstanding long-term stability in industrial applications with electrical surges, transient conditions, and high humidity exposure.
- Through-hole transient tolerant voltage monitoring resistor networks
- Utilises Caddock's Tetrinox® resistance technology
- Resistance values available 5kΩ, 10kΩ, 1.995MΩ and 4.990MΩ
- Total resistance 2MΩ or 5MΩ
- Ratio TCR (from -40°C to +85°C): ±5 ppm/°C and ±10 ppm/°C
- Absolute TCR (from -40°C to +85°C): ±30 ppm/°C
- Ratio tolerance of ±0.02% and ±0.01%
- Absolute tolerance of ±1%
These transient tolerant voltage monitoring networks are designed for use in the voltage measurement circuits of
- Power quality monitoring equipment
- Kilowatt-hour meters
- Other power and energy measurement equipment
Multiple USGS selected resistor sets can be used in series to form a string of resistors that achieves a higher total resistance and a higher voltage rating with 5 ppm/°C overall temperature coefficient.
The below table gives the specifications available for the complete VMN series:
* Please see the datasheet for the specification notes.
|Maximum Resistance||R1 = 4.99MΩ down to 1.995MΩ|
|Minimum Resistance||R2 = 10KΩ down to 5KΩ|
|TCR||Absolute (from -40°C to +85°C):
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This product is available fully compliant to the RoHS EU directive 2011/65/EU.