DatasheetDelta D2-L
Residual current device, 2 DIN modules
| Type | Residual current relay for monitoring residual currents in low-voltage networks |
|---|---|
| Model | Delta D2-L |
| Ordering code | RD1A |
| Format | 2 DIN modules according to DIN 43880, 35.6 mm wide |
| Input | Low-voltage network in connection with DEL…N ring current transformer |
| Waveform IΔn | Sinusoidal, pulsating, chopped sine wave, mixed current up to +6 mA DC component, type A according to IEC 60755 |
| Rated frequency | 50 Hz |
| Working frequency | 47…63 Hz |
| Residual current setting | Selectable by 7-position rotary switch |
| Setting ranges | 3 factors ×1 / ×10 / ×100 |
| IΔn ranges | 30 mA…30 A, 19 ranges |
| No trip | 0.5 × IΔn according to IEC 60755 |
| Response accuracy | According to IEC 60755 and IEC 60947-2 |
| Response time | Selectable by 7-position rotary switch |
| Instantaneous trip | < 40 ms at 5 × IΔn according to IEC 60755 and IEC 60947-2 |
| Time ranges | 0 / 0.15 / 0.25 / 0.5 / 1 / 2 / 5 s |
| Max. time deviation | 0.9…1.1 × t at 2 × IΔn according to IEC 60755 and IEC 60947-2 |
| Power-on signalling | Green LED “ON” lights up |
| Alarm indication | Red LED “TRIP” lights up and “TRIP” relay switches |
| Relay-ring transformer connection fault | Red LED “TRIP” lights up and “TRIP” relay switches |
| Manual test | Function test on the device |
| Remote control | By external NO contact, only with AC auxiliary supply |
| Automatic test | Checks the connection between relay and ring current transformer |
| Main alarm memorization | Red LED “TRIP” and “TRIP” relay self-retaining, except with automatic reset |
| Reset | Manual or automatic, selectable by DIP switch |
| Manual reset | On the device via front key |
| Remote manual reset | By external NO contact |
| Automatic reset | 3 reset attempts, 1 attempt every 60 seconds |
| Reset value | ≤ 50 % IΔn |
| Output | 1 SPDT changeover contact |
| Contact rating | 5 A / 250 VAC at cosφ 1; 3 A / 250 VAC at cosφ 0.4; 5 A / 30 VDC |
| Safety | Negative safety, normally de-energized relay, or positive safety, normally energized relay; selectable by DIP switch |
| AC auxiliary supply | 115 / 230 / 240 / 400 VAC |
| 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 | Protection 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 |
| Test voltage 1 | 2.5 kV R.M.S., 50 Hz / 1 min |
| Test circuit 1 | Input, relay output, auxiliary supply |
| Test voltage 2 | 4 kV R.M.S., 50 Hz / 1 min |
| Test circuit 2 | All circuits towards earth |
| EMC | Emission test according to EN 50081-1 / EN 55011; immunity test according to EN 50082-2 |
| High-frequency disturbance immunity | 1 MHz damped oscillation according to IEC 255-4 |
| EMC test voltage | 2.5 kV common mode, 1 kV series mode |
| Operating temperature | -5…50 °C |
| Max. temperature range | -10…55 °C |
| Storage temperature | -40…70 °C |
| Relative humidity | 50 % according to EN 60755, highest value at 40 °C |
| Climatic suitability | Tropicalized version |
| Power dissipation | ≤ 2.5 W |
| Mounting | Snap-on mounting on 35 mm DIN rail according to EN 50022 |
| Front | Sealable |
| Connection | Screw terminal for conductor up to max. 4 mm² |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP50 front, IP20 terminals |
| Weight | 200 g |
