Output circuit protection unit type BZ-2RPA
Country: · Model: BZ-2RPA
The output circuit protection unit BZ-2RPA monitors insulation resistance in a 36 V, 50 Hz network. In continuous monitoring mode it trips at 3 ± 0.5 kΩ, and in preventive monitoring mode at 4.2 ± 0.5 kΩ. It is supplied with 36 V, 50 Hz and has a 36 V output for the load.
- Terminal no.
- Purpose
- 1,2
- Not used
- 3
- Insulation monitoring voltage output, connected to earth.
- 4,5
- Optotriac output for connecting the signal lamp Leakage 36V
Technical specifications
| Terminal no. | Purpose |
|---|---|
| 1,2 | Not used |
| 3 | Insulation monitoring voltage output, connected to earth. |
| 4,5 | Optotriac output for connecting the signal lamp Leakage 36V |
| 6,7 | Load relay input, also the power supply. |
| 8,9 | 36V output for connecting the load. |
| 10 | Terminal for checking that insulation measurement works. |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The unit is supplied with 36 V, 50 Hz within a permitted range of 85–115 % and protects a network of the same voltage. It monitors insulation in two ways. In continuous monitoring mode the trip resistance is 3 ± 0.5 kΩ, and in preventive monitoring mode it is 4.2 ± 0.5 kΩ. Terminals 1 and 2 are not used, and terminal 3 is the insulation monitoring voltage output connected to earth. Terminals 4 and 5 give an optotriac signal to the lamp labelled Leakage 36V. Terminals 6,7 are the load relay input, which also powers the unit, and terminals 8,9 give the 36 V output for the load. Terminal 10 is for checking that insulation measurement works.
How to choose
The unit is meant for 36 V, 50 Hz networks, so check the network voltage first. Continuous monitoring trips at the lower resistance, 3 ± 0.5 kΩ, and preventive monitoring at 4.2 ± 0.5 kΩ, so the choice depends on whether an early warning is needed. For intrinsically safe power supply look at the BPI-RPA unit.
Request a price and lead time
Output circuit protection unit type BZ-2RPA. We reply within one business day.
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FAQ
At what insulation resistance does the BZ-2RPA trip?
In continuous monitoring mode at 3 ± 0.5 kΩ, and in preventive monitoring mode at 4.2 ± 0.5 kΩ.
What voltage is the unit meant for?
It is supplied from 36 V, 50 Hz within 85–115 % and protects a 36 V, 50 Hz network.
What is connected to terminals 4 and 5?
The signal lamp labelled Leakage 36V, which the unit switches through an optotriac.
What is terminal 10 for?
For checking that insulation measurement works.
Where is the load connected?
To terminals 8,9, which give the 36 V output. Terminals 6,7 are the load relay input, which also powers the unit.
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