TPIv 5880 > Insulation Monitoring Device
IEC/EN 61557 | IT Systems (AC) | 0–550 V | 10 Hz–10 kHz | ATEX Zone 2 | Designed and manufactured in France since 1987
The TPIv 5880 insulation monitoring device is an IMD compliant with standard IEC/EN 61557, designed for continuous monitoring of the insulation resistance of unearthed AC networks (IT system), single-phase or three-phase, from 0 to 550 V. Operational monitoring even when the network is de-energised. 3 kV galvanic isolation between the measuring circuit, the auxiliary supply and the output contacts.
Technical specifications
| Standard | IEC/EN 61557 |
| Network type | Unearthed AC networks (IT system), single-phase or three-phase |
| Rated voltage | 0 to 550 V |
| Frequency | 10 Hz to 10 kHz |
| Alarm threshold (RAL) | Adjustable from 5 to 100 kΩ (potentiometer P1) |
| Outputs | 2 changeover contacts — fail-safe (contacts de-energised on fault) |
| Latching | Automatic (jumper G1-G2) or manual (RESET button) |
| Test | Front panel TEST button + external inputs |
| De-energised monitoring | Yes |
| Power supply | 20 to 270 Vac (45–400 Hz) / 20 to 300 Vdc — 2.5 VA max |
| Galvanic isolation | 3 kV – 50 Hz – 1 min |
| Measuring voltage | 15 V DC ±10% — max. current < 0.1 mA |
| Response time | < 1.3 s (RAL = 50 kΩ) — hysteresis ≈ 15% |
| Indicators | Green LED (ON), Red LED (AL – insulation fault) |
| Mounting | Symmetrical DIN rail — 22.7 × 108.5 × 118.9 mm |
| Protection | IP20, black self-extinguishing ABS housing, UL 94V0 |
| Temperature | -20 to +60°C (storage: -20 to +70°C) |
| Certification | CE — ATEX 2014/34/EU (EN 60079-0, EN 60079-15) — EMC EN 61326-1 |
| Variants | TPIv 5880 (fail-safe) / TPIv 5880 N (energise-to-trip) |
ATEX certified (Directive 2014/34/EU, type “n” protection per EN 60079-15) — the TPIv 5880 is suitable for Zone 2 classified environments (category 3G). Typical installation within electrical enclosures in technical rooms.
⚠ IT system only. Not compatible with TT / TN networks.
DATASHEET (pdf) 
| MANUEL (pdf)
Why choose this insulation monitoring device?
De-energised monitoring — monitors insulation even when the network is switched off, ideal for generators and standby motors before start-up.
Universal power supply — 20–270 Vac / 20–300 Vdc, compatible with virtually all switchboard auxiliary voltages. No additional transformer required.
Fail-safe design — contacts de-energised on fault (IEC 61557 compliant). Energise-to-trip version (TPIv 5880 N) available on request.
Fast response — response time < 1.3 s. Measuring voltage 15 V DC with current < 0.1 mA, no disturbance to the monitored network.
Compact and robust — 22.7 mm DIN rail, IP20, -20 to +60°C, pluggable connectors, ATEX Zone 2 certified for enclosures in hazardous areas.
Applications: generators, safety power supplies, pumping stations, industrial boiler rooms, industrial IT system networks.
Need a pre-alarm?
For applications requiring early detection of insulation degradation, the TPIv 5882 insulation monitoring device adds a second pre-alarm threshold (RW adjustable from 10 kΩ to 5 MΩ) and programmable relays via switch C1. It is particularly suited to monitoring standby motors and de-energised pumps.
Also see our other insulation monitoring devices and residual current relays to complete your monitoring architecture.
