DatasheetDelta D2-s
Residual current device, 2 DIN modules
| Type | Residual current relay for residual current monitoring in low-voltage networks |
|---|---|
| Model | Delta D2-s |
| Ordering code | RD3A |
| Format | 2 DIN modules according to DIN 43880 |
| Input | Low-voltage line with DEL…N ring current transformer |
| Waveform IΔn | Sinusoidal, pulsating, chopped sine wave, pulsating + 6 mA DC, type A according to IEC 60755 |
| Rated frequency | 50 Hz |
| Working frequency | 47…63 Hz |
| Residual current setting | Selectable by 7-position potentiometer, 3 ranges ×1 / ×10 / ×100 |
| IΔn ranges | 30 mA…30 A, 19 ranges |
| Non-operating residual current | 0.5 × IΔn according to IEC 60755 |
| Intervention accuracy | According to IEC 60755 and IEC 60947-2 |
| Intervention time | Selectable by 7-position potentiometer |
| Instantaneous intervention | < 40 ms at 5 × IΔn according to IEC 60755 and IEC 60947-2 |
| Adjustable range t | 0 / 0.15 / 0.25 / 0.5 / 1 / 2 / 5 s |
| Maximum break time | 0.9…1.1 × t at 2 × IΔn according to IEC 60755 and IEC 60947-2 |
| Power-on signalling | Green LED “ON” |
| Instantaneous value display | 3 red LEDs, 20 / 40 / 60 % of the set IΔn value |
| Alarm intervention | Red LED “TRIP” and relay switching |
| Ring current transformer-relay connection failure | Red LED “TRIP” blinking and relay switching |
| Manual test | Verifies the residual current relay perfect working |
| Local test | Front key |
| Remote test | By external contact closing, available only with AC supply |
| Automatic continuous test | Verifies the integrity of the connection between relay and ring core |
| Alarm memorization | Red LED “TRIP” and relay self-retaining, except with automatic reset |
| Reset | Manual or automatic, selectable by DIP switch |
| Local manual reset | Front key |
| Remote manual reset | By external contact closing |
| Automatic reset | 3 restart attempts, each 60 seconds |
| Reset inhibit | With persistent residual current ≥ 50 % IΔn |
| Output | 1 relay with SPDT contact |
| Contact rating | 5 A / 250 VAC at cosφ 1; 3 A / 250 VAC at cosφ 0.4; 5 A / 30 VDC |
| Security | Negative security or positive security, selectable by DIP switch |
| AC auxiliary supply | 115 / 230 / 240 / 400 V |
| AC tolerance | 0.85…1.1 Uaux |
| Auxiliary supply rated frequency | 50 Hz |
| Auxiliary supply working frequency | 47…63 Hz |
| AC power consumption | ≤ 2.5 VA |
| DC auxiliary supply | 20…150 VDC / 40…60 VAC |
| Reverse polarity protection | Available |
| DC power consumption | ≤ 2.5 W |
| Short interruption of auxiliary supply | Immunity up to 300 ms |
| Installation category | III |
| Pollution degree | 2 |
| Insulation reference voltage | 450 V |
| Impulse withstand voltage | 5 kV, 1.2/50 µs, 0.5 J |
| AC voltage test 1 | 2.5 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 1 | Input, relay output, auxiliary supply |
| AC voltage test 2 | 4 kV R.M.S., 50 Hz / 1 min |
| Considered circuits 2 | All circuits and earth |
| Electromagnetic compatibility | Emission tests according to EN 50081-1 and EN 55011; immunity tests according to EN 50082-2 |
| High frequency disturbance test | 1 MHz damped oscillatory wave according to IEC 255-4 |
| Test voltage EMC | 2.5 kV common mode, 1 kV series mode |
| Operating temperature | -5…50 °C |
| Limit temperature range | -10…55 °C |
| Storage temperature range | -40…70 °C |
| Relative humidity | 50 % according to IEC 60755, highest value at 40 °C |
| Climatic suitability | Tropicalized version for saline-humid-heat ambient |
| Max. power dissipation | ≤ 2.5 W |
| Mounting | 35 mm DIN rail according to EN 50022 |
| Housing | 2 DIN modules according to DIN 43880 |
| Front frame | Sealable to avoid improper opening |
| Connections | Screw terminals for cable up to 4 mm² |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP50 front frame, IP20 terminals |
| Weight | 200 g |
