High voltage relay
R9 Series
R9 series high voltage relays are a larger variant of the R2, designed for applications that require more power. With a 75 A continuous carry rating, the R9 is suitable for applications up to 15 kV. Molybdenum/copper contacts provide low stable contact resistance allowing for low loss in RF circuits. The Single Pole Double Throw (SPDT) configuration provides design flexibility by incorporating both Normally Open (NO) and Normally Closed (NC) contact sets within a single relay. Continuity transfers between the contact sets when the coil is powered on or off.
Key specifications
R9 Series at a glance
- Voltage
- 15 kV
- Current
- 75 A
- Contact form
- SPDT
- Dielectric
- Vacuum
| Voltage rating | 15 kV |
|---|---|
| Current rating (continuous, DC or 60 Hz) | 75 A |
| Contact arrangement | SPDT |
| Contact form | C = Single Pole Double Throw |
| Operation | Make/Break Load Switching |
| Coil voltage | 26.5 VDC |
| Construction | Bottle |
| Dielectric | Vacuum |
| Contact material | Molybdenum/Copper |
| HV termination | Screw |
| Coil termination | Turret Terminals |
| Mounting | Flange |
Datasheet
Full ratings, dimensions and drawings are in the R9 Series datasheet (PDF).
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Datasheet specifications
R9 Series performance
| Contact Arrangement | Form C, SPDT (Single Pole Double Throw) |
|---|---|
| Max Operating Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 15 kV dc or 60 Hz; 13 kV at 2.5 MHz; 10 kV at 16 MHz; 8 kV at 32 MHz |
| Test Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 20 kV dc or 60 Hz |
| Continuous Current DC or 60 Hz | 75 A |
| Continuous Current 2.5 MHz | 35 A |
| Continuous Current 16 MHz | 22 A |
| Continuous Current 32 MHz | 17 A |
| Capacitance – Across Open Contacts | 3.0 pF |
| Capacitance – Contacts to Ground | 3.5 pF |
| Load Switching (Make and Break) | (Consult Factory) |
| Coil Hi-Pot (V RMS, 60 Hz) | 500 V |
| Contact Resistance (Max) | 0.01 Ω @ 1 A |
| Operate Time (Max, incl bounce) | 30 ms |
| Release Time (Max) | 8 ms |
| Shock - Operating, 1/2 Sine, 11 ms | 50 G |
| Vibration (55-500 Hz Peak) | 10 G |
| Operating Temperature | -55°C to 125°C |
| Mechanical life | 1,000,000 cycles |
| Coil (25 °C) | 26.5 VDC |
|---|---|
| Nominal Voltage | 26.5 VDC |
| Pick-up Voltage, Max | 16 VDC |
| Drop-out Voltage | 1.0-10 VDC |
| Coil Resistance (±10%) | 190 Ω |
From the R9 datasheet. The datasheet notes on coil temperature effects apply. Download the datasheet.
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Applications
Where the R9 Series is used
High Power Test Systems and Load Banks
Switching and protection for load banks, dynos, and high-power test setups.
Medical Devices and Therapy Systems
High voltage switching for medical diagnostic, therapy, and specialty equipment.
Scientific and Analytical Instrumentation
HV switching for scientific instruments, measurement systems, and laboratory setups.
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Questions about the R9 Series?
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