SD300
Safe Discharge Unit
- Unique failsafe design
- Electrical isolation between probes
- Self test facility
SD300
The SD300 is a capacitor discharge unit specifically designed to discharge stored energy safely from large capacitors. These capacitors store potentially lethal amounts of energy and must be safely discharged before service or maintenance is carried out.
The common, unauthorised practice is to discharge this energy with screwdrivers or wires prior to maintenance, test or repair work. This can cause uncontrolled sparking and is extremely dangerous. It can also damage capacitors. The SD300 capacitor discharge unit has a unique failsafe two handed push-button operation which initiates and maintains the discharge. It ensures that the operator never comes into contact with the live circuit. It's a safety must.
The SD300 capacitor discharge unit is designed for use in applications where the safe discharge of electricity in capacitors up to 1000V is required. Wind turbines, DC motor drives and DC motor drive manufacturers are typical examples of relevant applications.
SD300
Technical specification
| Maximum voltage | 1000V DC |
| Maximum capacitance | 1200uF |
| Discharge time | 30s nominal @1000V/1200uF |
| Safety Interlock | Discharge inhibited if >40V AC between test probes |
| Indicators | Centre-zero panel meters and LED indicators |
| Test leads | 3 x 4m fully shrouded with fused probes |
| IP Rating | IP66 (Case closed) |
| IP40 (Case open) | |
| Power Supply | 3 x PP3 alkaline (main unit) |
| 1 x MN21 alkaline (proving) | |
| Dimensions (mm) | 339(w) x 295 (d) x152 (h) |
| Weight | 4kg |
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SD300 Datasheet
