circuit breaker delay instantaneous temperature rise test equipment

Application:

According to national standards GB 14048.1, GB 14048.2, PNS 519:1991,

Suitable for MCCB testing This standard applies to single-pole and multi-pole molded case circuit breakers with rated voltage <=600V.

Suitable for 25 ° C rated circuit breaker（the environment temperature is controlled by the user)

Rated current (rcc), continuous long-term energization does not trip.

110% of rated current (rcc) for 2 hours without tripping

200% rcc of 10-30A circuit breaker should trip within 2 minutes (tested separately for each pole)

200% rcc of 31-50A circuit breaker should trip within 4 minutes (each pole is tested separately)

200% rcc of 51-100A circuit breaker should trip within 6 minutes (each pole is tested separately)

125% of the 10-30A circuit breaker should be tripped within 60 minutes (all poles tested simultaneously)

For 31-50A circuit breakers, 125% of rcc should trip within 60 minutes (all poles tested simultaneously)

For 51-100A circuit breakers, 125% of rcc should trip within 120 minutes (all poles tested simultaneously)

Suitable for 40 ° C rated circuit breaker(the environment temperature is controlled by the user)

-110% rated continuous current (rcc), does not trip for 2 hours

220% rcc of 10-30A should trip within 2 minutes (each pole is tested separately)

220% rcc of 31-50A should trip within 4 minutes (each pole is tested separately)

200% rcc of 51-100A should trip within 6 minutes (each pole is tested separately)

137.5% rcc of 10-30A should trip within 60 minutes (all poles tested simultaneously)

137.5% of the 31-50A rcc should trip within 60 minutes (all poles tested simultaneously)

137.5% rcc of 51-100A should trip within 120 minutes (all poles tested simultaneously)

Parameter :

Input voltage: 3-phase 3-wire+earthing  230V (1±10%) V, frequency: 60HZ±1HZ.

Test bench capacity: 20KVA.

Instantaneous current output: AC 0—2000A, automatic control, set output.

Instant test time: 0-999ms, minimum resolution: 1ms,

Delay current output: AC—200A, automatic control, set output, directly display current effective value.

Delay test time: 0-9h59m59s, resolution 0.1s.

Temperature measurement range: -50-300 degrees, 24-way simultaneous test.

Instantaneous current accuracy level: 3-5%

Delay current accuracy level: 1.0%

Equipment insulation resistance ≥ 5 megohms