HZ7411 Automatic Circuit Breaker Timing Test Equipment
Huazheng Electric Manufacturing (Baoding) Co., Ltd. is one of the leading manufacturers and suppliers of hz7411 automatic circuit breaker timing test equipment in China. Please feel free to buy high quality equipment for sale here from our factory. Good service and reasonable price are available.
HZ7411 Circuit Breaker Dynamic Characteristic Tester
I Product technical parameters
1.1 Use environment
Input power：220V±10%,50Hz±10%
Atmospheric pressure：86～106kpa
Temperature:：－10～40℃
Humidity：≦80%RH
1.2 Safety performance
Insulation resistance：＞2MΩ
The power supply withstands a power frequency voltage of 1.5 kV applied to the cabinet for 1 minute, with no flashover or breakdown.
1.3 Basic parameters
1.3.1 Time
When the range is selected from 250-4000ms, the resolution is 0.1ms and the error is 0.1ms ± 1 word; when the range is 10000-20000ms, the resolution is 1ms and the error is 1ms ± 1 word.
1.3.2 Speed
Range is 20.00m / s, resolution is 0.001m / s, error: ± 0.01m / s ± 1 word
1.3.3 Current
The range is 10A (20A), the resolution is 0.01A, and the error is 1% ± 0.1A.
1.3.4 Closing resistance
The range is 50-2000Ω, the resolution is 0.1Ω, and the error is% 1 ± 1Ω.
1.3.5 Output Power
DC5 ～ 270V digital adjustable 10A (20A) (instantaneous operation).
1.3.6 Stroke
Switch type | Range(mm) | Resolution(mm) | Error |
Vacuum circuit breaker | 50 | 0.1 | 1%±1 word |
SF6 circuit breaker | 300 | ||
Less oil circuit breaker | 1000 |
Table 1
II Performance
2.1 Time
The instrument can measure the inherent opening and closing time of up to 12 metal contacts, as well as synchronization time, arcing contact time, dead time, and closing spring time for open-close, close-open, and open-close-open cycles. Some models can also measure the pre-insertion time of closing resistors.
2.2 Speed and stroke
This tester can record and measure the closing bounce time, the number of bounces, the bounce process, and the bounce waveform of each fracture.
2.3 Speed and stroke
This tester can record and calculate the rigid points, rigidity, maximum speed, average speed, total travel, opening distance, over travel, rebound amplitude, time-travel characteristic curve.
2.4 Current and voltage
This tester can record the opening / closing current value and current waveform of the opening / closing coil, and provides DC5 ～ 270V / 10A (20A) digital adjustable circuit breaker operation power supply, automatically completes the low voltage operation test of the circuit breaker, and measures the open circuit. The operating voltage of the device.
2.5 Closing resistance
Some models of this machine can measure 6-way closing resistance value and its pre-throw time at the same time.
No. | Speed definition | Applicable circuit breaker model |
1 | 10ms after opening before closing | Certain oil switches and SF6 circuit breakers |
2 | 5ms each after opening before closing | Certain oil switches |
3 | 10ms each after opening before closing | |
4 | 6mm before closing and after opening | Some 10kv vacuum circuit breakers |
5 | Speed before closing, 6mm after opening | |
6 | 12mm before closing and after opening | Some 35kv vacuum circuit breakers |
7 | 16mm before closing, 32mm after opening | LW8-35 type SF6 circuit breaker |
8 | 36mm before closing, 72mm after opening | LW6 type SF6 circuit breaker |
9 | 120mm before closing and after opening | LW7 type SF6 circuit breaker |
10 | 10% to fracture | SF6 circuit breakers in some Xi'an switch factories |
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