DatasheetDelta 72 × 72 DIN 43700
Residual current relay for low-voltage networks
| Type | Residual current relay for residual current monitoring in low-voltage networks |
|---|---|
| Format | 72 × 72 mm, DIN 43700 |
| 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 |
| Trip current IΔn | 30 mA…30 A, selectable by 7-position rotary switch |
| Setting ranges | 3 factors ×1 / ×10 / ×100 |
| No trip | 0.5 × IΔn according to IEC 60755 |
| Response accuracy | According to IEC 60755 and IEC 60947-2 |
| Response time t | Selectable by 7-position rotary switch |
| Instantaneous trip | According to IEC 60755 and IEC 60947-2; < 40 ms at 5 × IΔn |
| Time ranges t | 0 / 0.15 / 0.25 / 0.5 / 1 / 2 / 5 s |
| Max. time deviation | 0.9…1.1 × t at 2 × IΔn |
| Pre-alarm | Fixed threshold, 50 % of selected IΔn |
| Power-on signalling | Green LED “ON” lights up |
| Instantaneous value display | 4 yellow LEDs, 20 / 30 / 40 / 50 % of selected IΔn |
| Alarm indication | Red LED “TRIP” lights up and “TRIP” relay switches |
| Relay-ring transformer connection fault | Red LED “TRIP” and “TRIP” relay switches |
| Pre-alarm indication | “50 % IΔn” 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 | “TRIP” LED lights and “TRIP” relay self-holds, except with automatic reset |
| Reset | Manual or automatic, selectable by DIP switch |
| Manual local reset | Front push-button |
| Manual remote reset | By external NO contact |
| Automatic reset | 3 reset attempts, each 60 seconds |
| Reset value | ≤ 50 % IΔn |
| Pre-alarm output | “50 % IΔn” relay: 1 SPDT changeover contact, negative safety |
| Alarm output | “TRIP” relay: 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 or positive safety, 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 V |
| Reverse polarity protection | Available |
| DC power consumption | ≤ 2.5 W |
| Short interruption of auxiliary supply | Protected up to 150 ms |
| Installation category | III |
| Pollution degree | 2 |
| Insulation 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; immunity test according to EN 50082-1 |
| 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 |
| Climatic suitability | Tropicalized version |
| Power dissipation | ≤ 3.5 W |
| Mounting | Panel mounting, panel cutout 68 × 68 mm |
| Front frame | 72 × 72 mm, 75 × 75 mm with IP54 protective cover |
| Housing depth | 75 mm |
| Connection | Faston 6.3 × 0.8 mm |
| Housing material | Self-extinguishing Makrolon |
| Protection degree | IP40 front, IP20 terminals |
