Consilium Isolator NS-Isolator-A Intrinsically Safe Isolator N1790
Part no.
The Consilium Salwico NS-Isolator-A N1790 is an IS isolator, used in combination with Salwico IS addressable detectors and manual call points.
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Consilium Salwico NS-Isolator-A
The Consilium Salwico NS-Isolator-A (N1790) provides a safe and reliable interface between intrinsically safe (IS) field devices and the fire alarm system. Designed for use with Salwico IS addressable detectors and manual call points, the NS-Isolator-A enables fire detection devices located in hazardous areas to communicate with the fire alarm panel while maintaining intrinsic safety requirements.
The unit combines an IS-Isolator and a LISA-2 connection board within a single assembly. Installed in a non-hazardous area, it serves as the interface between the addressable detector loop and the intrinsically safe detection circuit. Each NS-Isolator-A can support up to 20 IS line units, and up to five NS-Isolator-A units can be connected to a single addressable detector loop, allowing larger hazardous-area detection networks to be integrated into the fire alarm system.
The NS-Isolator-A requires no separate power supply or earth connection. Instead, it receives power directly from the fire alarm panel through the loop cable, reducing installation complexity and eliminating the need for additional wiring.
Key Features
- Intrinsically safe isolator unit
- Compatible with Salwico IS addressable detectors
- Compatible with Salwico IS manual call points
- Combines an IS-Isolator and LISA-2 connection board
- Installed in non-hazardous areas
- Forms the interface to IS detection circuits
- Supports up to 20 IS line units per isolator
- Up to five units per detector loop
- No separate power supply required
- No earth connection required
- Powered directly from the fire alarm loop
- Reduces installation time and wiring requirements
Typical Applications
The Salwico NS-Isolator-A enables intrinsically safe fire detection systems to operate safely in hazardous environments.
Common applications include:
- Offshore platforms
- Marine vessels
- Chemical plants
- Petrochemical facilities
- Fuel storage areas
- Tank farms
- Hazardous industrial processes
- Explosion-risk zones
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Salwico NS-Isolator-A |
| Part Number | N1790 |
| Device Type | Intrinsically Safe Isolator |
| Compatible Devices | Salwico IS Addressable Detectors and Manual Call Points |
| Internal Components | IS-Isolator and LISA-2 Connection Board |
| Installation Location | Non-Hazardous Area |
| Maximum IS Line Units | 20 per NS-Isolator-A |
| Maximum Isolators per Loop | 5 |
| Power Supply | Via Fire Alarm Loop |
| Separate Power Supply Required | No |
| Earth Connection Required | No |
| Application | Hazardous Area Fire Detection Systems |
Installation Characteristics
| Parameter | Description |
|---|---|
| Device Type | Intrinsically Safe Interface Unit |
| Installation Area | Non-Hazardous Zone |
| Field Device Connection | IS Detectors and Manual Call Points |
| Loop Connection | Addressable Detector Loop |
| Power Source | Fire Alarm Panel via Loop Cable |
| Additional Cabling | Not Required |
| Capacity | Up to 20 IS Devices per Unit |
Downloads for Consilium Isolator NS-Isolator-A Intrinsically Safe Isolator N1790.
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