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30
SEPTEMBER
2014
70 Series: Line monitoring relays for single and three-phase applications
Finder offers a new range of Electronic voltage monitoring relays for single and three-phase application - in 17.5 or 35 mm housings. Types 70.11, 70.31 and 70.41 cover the following functions and points of specification: Models for the multi-function contr...
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Finder offers a new range of Electronic voltage monitoring relays for single and three-phase application – in 17.5 or 35 mm housings.
Types 70.11, 70.31 and 70.41 cover the following functions and points of specification:
- Models for the multi-function control of undervoltage and overvoltage, phase sequence, phase loss, asymmetry and loss of neutral
- Positive safety logic (the contact opens when the monitored parameter is outside of limits.
- All functions and values can be easily adjusted by the selector and trimmer on front face
- “Blade + cross” – both flat blade and cross head screw drivers can be used to adjust the regulators, the function selector, and to release the 35mm rail catch
- Colored LEDs for clear & immediate visual indication
- 1 CO relay output, 6 or 10 A
- Compact module sizes (17.5 mm or 35 mm wide)
- Mounting on 35 mm rail (EN 60715)
- Cadmium Free contacts
These relays join the type 70.61 for three-phase loss and rotation (replacing the type 72.31 as reported in the Finder News January 1 2012).
European Patent pending for the innovative principle at the root of the 3 phase monitoring and error survey system.
The 70.61 technical characteristics are as follows:
- Universal voltage monitoring (UN from 208 V to 480 V, 50/60 Hz)
- Phase loss monitoring, even under phase regeneration
- Positive safety logic – Make contact opens if the relay detects an error
- 1 CO relay output, 6 A
- Compact size (17.5 mm wide)
- 35 mm rail (EN 60715) mount
| 70.11 | 70.31 | 70.41 | 70.61 | |
|---|---|---|---|---|
| System Type | Single-phase | Three-phase | Three-phase | Three-phase |
| Rated voltage (50/60 Hz) in V | 220…240 | 380…415 | 380…415 | 208…480 |
| Undervoltage with / without memory (selectable) | ✔ | ✔ | — | — |
| Overvoltage with / without memory (selectable) | ✔ | ✔ | — | — |
| Window mode with / without memory (selectable) | ✔ | ✔ | — | — |
| Window mode without memory | — | — | ✔ | — |
| Phase loss | — | ✔ | ✔ | ✔ |
| Phase sequence | — | ✔ | ✔ | ✔ |
| Asymmetry | — | — | ✔ | — |
| Loss of neutral (selectable) | — | — | ✔ | — |
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