CT protection
Spark Gap A046 CT protector
Made by Alltec Sistemas, the Spark Gap A046 protects the secondaries of metering and protection current transformers (CTs) from the overvoltage caused when the circuit is opened by mistake. A single unit protects up to 5 CTs.
How the Spark Gap protects the CT
Protector for metering and protection CTs.
The Spark Gap protects the secondary windings of metering or protection current transformers (CTs), preventing damage if a secondary circuit is opened by mistake.
When the open-secondary voltage exceeds 3,500 V peak, the spark-gap cartridge fires and protects the CT. If the discharge persists, after 5 to 10 seconds the cartridge fuses and permanently short-circuits the CT. That cartridge must then be replaced with a new one, a quick and simple swap.
The Spark Gap comes fitted with 5 spark-gap cartridges, so a single unit protects 5 current transformers.
Spark Gap A046 technical data
- Nominal discharge voltage
- 2,650 Vrms ± 6% (sparkover from 3,500 V peak)
- Nominal discharge current
- 5 A
- Maximum discharge current
- 6 A
- Frequency
- 50/60 Hz
- Average time to fuse the cartridge
- 5 to 10 s at 5 A
- Capacity
- 5 spark-gap cartridges (5 CTs)
- Degree of protection
- IP20
- Mounting
- TS-35 DIN rail
- Weight
- 0.5 kg
Technical brochures
- Spark Gap A046 — brochure in Portuguese Download PDF
- Spark Gap A046 — brochure in English Download PDF
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