Why Choose the ABB CM-IVN.P Coupling Unit?
The ABB CM-IVN.P (manufacturer order code 1SVR760669R9400) is a compact and reliable insulation monitoring coupling unit designed to extend the voltage monitoring capabilities of compatible ABB insulation monitoring relays. As part of the ABB CM-IVN coupling unit series, it is specifically developed for use with the ABB CM-IWN insulation monitoring relay family in industrial electrical distribution systems and unearthed IT networks.
This coupling unit enables compatible insulation monitoring relays to supervise higher-voltage electrical installations without requiring a separate power supply for the coupling unit itself. Its passive operating principle simplifies integration into existing monitoring arrangements, while its robust construction supports dependable operation in industrial environments. The CM-IVN.P is particularly suitable for applications requiring continuous insulation supervision in AC, DC and combined electrical systems.
With a supported nominal monitored system voltage of up to 690 V AC or 1000 V DC, the ABB CM-IVN.P extends the application range of compatible ABB CM-IWN insulation monitoring relays. Its push-in connection terminals, compact 45 mm-wide housing and DIN rail mounting make it ideal for installation inside industrial electrical control panels, distribution cabinets and machinery control systems.
Key Advantages
- Purpose-designed coupling unit for ABB insulation monitoring relays.
- Extends compatible CM-IWN insulation monitoring applications to 690 V AC and 1000 V DC.
- Passive design requires no separate control supply voltage.
- Supports insulation monitoring in unearthed IT electrical distribution systems.
- Push-in connection terminals simplify installation and maintenance.
- Compact 45 mm-wide housing saves space inside electrical cabinets.
- Suitable for industrial AC and DC insulation monitoring applications.
- Designed for integration with compatible ABB CM-IWN insulation monitoring relays.
- DIN rail mounting allows straightforward installation and removal.
- Robust housing construction supports reliable operation in demanding industrial environments.
- Helps extend existing insulation monitoring systems without replacing the compatible monitoring relay.
Key Features
- ABB CM-IVN coupling unit series.
- Manufacturer part number: CM-IVN.P.
- ABB order code: 1SVR760669R9400.
- Product function: Voltage range expansion for compatible ABB CM-IWN insulation monitoring relays.
- Maximum nominal monitored AC system voltage: 690 V AC.
- Maximum nominal monitored DC system voltage: 1000 V DC.
- Measuring circuit frequency range: 15–400 Hz.
- Passive coupling unit requiring no independent control supply.
- Push-in, screwless terminals for secure electrical connections.
- Compatible with the ABB CM-IWN.1 insulation monitoring relay.
- Suitable for insulation monitoring arrangements in unearthed AC and DC electrical systems.
- Compact DIN rail-mounted enclosure.
- 45 mm housing width for efficient cabinet installation.
- Operating ambient temperature: -25 to +60 °C.
- Housing material designed to meet UL 94 V-0 flame-retardancy classification.
- Designed for industrial electrical monitoring and protection installations.
Technical Specifications
- Manufacturer: ABB
- Series: CM-IVN Coupling Units
- Model: CM-IVN.P
- Manufacturer order code: 1SVR760669R9400
- ABB product group: 310921 – Measuring & Monitoring Relays
- Product type: Insulation monitoring coupling unit
- Product category: Measuring and monitoring relay accessories
- Primary function: Voltage range expansion for insulation monitoring relays
- Compatible monitoring relay: ABB CM-IWN.1
- Maximum nominal monitored AC voltage: 690 V AC
- Maximum nominal monitored DC voltage: 1000 V DC
- Nominal monitored voltage range: 0–690 V AC / 0–1000 V DC
- Measuring circuit frequency: 15–400 Hz
- Control supply requirement: None – passive device
- Operating principle: Passive voltage coupling
- Connection technology: Push-in terminals
- Terminal type: Screwless terminals
- Mounting type: DIN rail mounting
- Housing protection rating: IP50
- Terminal protection rating: IP20
- Operating ambient temperature: -25 to +60 °C
- Storage temperature: -40 to +85 °C
- Housing flame-retardancy classification: UL 94 V-0
- Dimensions (H × W × D): 85.6 × 45 × 104.8 mm
- Height: 85.6 mm
- Width: 45 mm
- Depth: 104.8 mm
- Net weight: 0.165 kg
- Country of origin: Germany
- RoHS compliance: EU Directive 2011/65/EU
- EAN: 4016779852678
Reliable Insulation Monitoring for Industrial Electrical Systems
Insulation monitoring is essential for maintaining the reliability and electrical safety of unearthed IT distribution systems. In these installations, insulation monitoring relays supervise insulation resistance between live conductors and protective earth, helping detect deteriorating insulation before faults develop into more serious operational problems.
The ABB CM-IVN.P coupling unit extends the voltage range supported by compatible ABB CM-IWN insulation monitoring relays. When connected according to the manufacturer's instructions, it enables insulation supervision in electrical networks with nominal voltages up to 690 V AC or 1000 V DC. The coupling unit provides the voltage adaptation interface, while the connected insulation monitoring relay performs the actual insulation resistance measurement, fault evaluation and alarm signalling.
Unlike an independent monitoring relay, the CM-IVN.P is a passive accessory and does not incorporate its own insulation alarm contacts, adjustable trip thresholds or standalone monitoring display. It operates as part of a complete insulation monitoring arrangement and requires a compatible monitoring relay to provide the monitoring and protective signalling functions.
The CM-IVN.P is designed for straightforward integration into industrial electrical cabinets. Its push-in connection technology supports efficient wiring, while its DIN rail-mounted construction simplifies installation alongside compatible ABB monitoring equipment. These characteristics make it a practical choice for electrical engineers, maintenance teams and panel builders working with higher-voltage unearthed distribution networks.
Typical Applications
- Unearthed IT electrical distribution systems requiring insulation supervision.
- Industrial AC electrical networks with nominal voltages up to 690 V AC.
- Industrial DC electrical networks with nominal voltages up to 1000 V DC.
- Voltage range expansion for compatible ABB CM-IWN insulation monitoring relays.
- Industrial electrical distribution cabinets and switchgear installations.
- Manufacturing machinery and industrial automation systems.
- Electrical control panels requiring higher-voltage insulation monitoring.
- Industrial power distribution and electrical protection systems.
- Electrical maintenance and insulation condition monitoring installations.
- OEM machinery and electrical panel-building applications.
- Industrial power systems where continuous insulation monitoring supports operational reliability.
- Integration into existing compatible ABB insulation monitoring arrangements.
