The SD series voltage stabilisers reliably protect sensitive loads against mains disturbances and voltage fluctuations:
- Stabilise voltage fluctuations from 184 to 253 VAC to within ±1 %
- Operating range: 161 to 276 VAC (for short periods)
- Attenuate asymmetrical interference voltage spikes by 40 to 75 dB
- Compensates short-term voltage dips of up to 10 ms
- Switchable between high control accuracy and enhanced interference voltage suppression
- No generation of internal interference voltages
- Long service life, completely maintenance-free
Technical Specifications
Electrical Specifications
| INPUT | SD 250 | ||
|---|---|---|---|
| Rated input voltage (PRI) | 230 VAC +10% … -30 % | ||
| Regulation accuracy at input voltage | +10 % … -20 % and 100 % load | ||
| Frequency (PRI = SEC) | 50 Hz | ||
| OUTPUT | SD 250 | ||
|---|---|---|---|
| Output voltage (SEC) at PRI = 230 VAC | 230 VAC, sinusoidal | ||
| Output power | 250 VA | ||
| Regulation accuracy (statistical) at Ue ±10 %, IN | ±0.5 % | ||
| Regulation accuracy (statistical) at Ue ±10 % / -20 %, IN | ±1 % | ||
| Regulation accuracy (statistical) at Ue ±10 % / 20 %, 0 … IN | +2 % / -1 % | ||
| Settling time | 20 … 60 ms | ||
| Harmonic content | <5 % | ||
| Asymmetric damping (10 … 100 kHZ) | 75 … 60 dB | ||
| EFFICIENCY | SD 250 | ||
|---|---|---|---|
| Efficiency typ. | 83 % | ||
| ELECTRICAL PROTECTION | SD 250 | ||
|---|---|---|---|
| Primary fuse (recommended) | T 4.0 A | ||
| Secondary fuse | only useful for individual partial loads | ||
Mechanical Specifications
| SD 250 | |||
|---|---|---|---|
| Width | 242 mm | ||
| Height | 216 mm | ||
| Depth | 147 mm | ||
| Weight | 11.0 kg | ||
| Inherent noise | <48 dB (A) | ||
| Mounting | 165 / 66 mm | ||
| Installation method |
Floor mounting, Wall mounting (horizontal / vertical) | ||
Connection Details
| CONNECTION | SD 250 | ||
|---|---|---|---|
| Connection type | Input / Output | ||
| Connection technology | Terminal block | ||
Protection and Safety
| PROTECTION AND SAFETY | SD 250 | ||
|---|---|---|---|
| IP Rating | IP 00 | ||
| Short-circuit-proof | Yes | ||
Environmental Conditions
| SD 250 | |||
|---|---|---|---|
| Ambient temperature | -25 … +40 °C | ||
| Core temperature | ca. +70 °C | ||
Standards and Regulations
| SD 250 | |||
|---|---|---|---|
| EU Declaration of Conformity in accordance with | 2011/65/EU, 2014/35/EU | ||
| Standards and Regulations | DIN EN IEC 61558-1 DIN EN IEC 61558-2-12 DIN EN IEC 55011 |
||
Commercial Data
| SD 250 | |||
|---|---|---|---|
| Product group | Magnetic voltage stabilisers | ||
| Packaging unit | 1 item | ||
| Type of packaging | Cardboard box | ||
| Country of origin | DE | ||
| HS Code | 85437090 | ||
| Item number | 12682 | ||
Product Description
Our magnetic voltage stabilisers are robust, durable, stabilise voltage fluctuations, protect against voltage spikes and compensate for voltage dips within milliseconds. For power ratings from 250 to 3000 VA.
Approvals and Applications
CE Marking
2011/65/EU, 2014/35/EU
Konzept Energietechnik - DC USV Systeme und Stromversorgung