AC Equipment Filters
Description
A range of high performance AC power input filters for filtering incoming power to sensitive or noisy equipment.
| Rated Voltage | 250V ac 50/60Hz, 250Vdc | |
| Test Voltage | (line – earth) | 2250V dc |
| (line – line) | 1250V dc | |
| Rated Current, IR | As tabulated | |
| Insertion Loss | See graph | |
| Maximum Volt Drop per line at full load dc current | 250mV | |
| Maximum Full Load Heat Dissipation | As tabulated | |
| Discharge Time to below 34V | 2s maximum | |
| Maximum Temperature Rise at Full Load | 25ºC | |
| Ambient Temperature Range | -25ºC to +85ºC | |
| Climatic Category | 25/85/21 | |
| Maximum Leakage Current (at 250V 50Hz) | 0.4mA | |
| Part Number | Current Rating IR (A) @50ºC* | Maximum Heat Dissipation (W) | Major Dimensions (mm) | Weight (g) | ||
|---|---|---|---|---|---|---|
| Length A | Width B | Depth C | ||||
| DS26770 | 1 | 0.15 | 51 | 51 | 32 | 170 |
| DS26771 | 3 | 1.5 | 51 | 51 | 32 | 170 |
| DS26772 | 6 | 3.5 | 64 | 56 | 38 | 260 |
| DS26773 | 10 | 2.0 | 88 | 60 | 38 | 440 |
| DS26774 | 15 | 4.5 | 88 | 60 | 38 | 440 |
*Current derating between 50ºC and 85ºCFor temperature, θ Iθ = IR
| Part Number | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R | |
| DS26770, DS26771 | 51 | 51 | 32 | – | 13 | 16 | 17.5 | 21.5 | 18 | 7 | – | – | – | 37 | 7 | 10.5 |
| DS26772 | 64 | 56 | 38 | – | 13 | 18 | 19 | 25 | 22 | 7 | – | – | – | 40 | 8 | 12.5 |
| DS26773, DS26774 | 88 | 60 | 38 | 11 | 13 | 20 | 20 | 25 | 20 | 9 | 35 | 12.5 | 94 | 44 | 8 | 12.5 |
All high performance filters contain capacitors which will store charge even after the power has been removed from the filter. All ac filters listed are fitted with internal discharge resistor networks. These are intended to discharge the capacitors to a safe level within two seconds of switching off the power. As an added precaution, after removing the power, filter terminals should always be shorted to earth (filter case) and to each other, before touching. A good low impedance earth connection must be made to the filter.