![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
HJLL series digital zero-sequence current relay This series of current relays is a momentary action characteristic, used for zero-sequence current protection of generators, transformers and transmission lines. As a starting element, an external zero-sequence current transformer is required.
HJLL digital zero sequence current relay
HJLL-E9/B digital zero sequence current relay, HJLL-E8/B digital zero sequence current relay, HJLL-E7/B digital zero sequence current relay, HJLL-E6/B digital zero sequence current relay, HJLL- E5/B digital zero sequence current relay, HJLL-E4/B digital zero sequence current relay, HJLL-E3/B digital zero sequence current relay, HJLL-E9/A digital zero sequence current relay, HJLL-E8/ A digital zero sequence current relay, HJLL-E7/A digital zero sequence current relay, HJLL-E6/A digital zero sequence current relay, HJLL-E5/A digital zero sequence current relay, HJLL-E4/A digital Zero sequence current relay, HJLL-E3/A digital zero sequence current relay
1. use
This series of current relays is a momentary action characteristic, used for zero-sequence current protection of generators, transformers and transmission lines. As a starting element, an external zero-sequence current transformer is required.
2. Mounting structure
Rail mounting 9, rail mounting E Two housing sizes, please refer to the external dimensions for specific dimensions.
3. Characteristics
1) Using 3-digit dial setting
2) Setting range is 0.05A~6A, grade difference is 0.01A
3). 50Hz, 60Hz universal.
5. Technical Parameters
(1). The rated current, setting range, return factor, and auxiliary power supply are shown in the table below.
| name | model | Rated Current (A) | Long-term permission Turn on current (A) | Instantaneous permission Overload current (A) | Overall range (A) | Level difference (A) | Return coefficient | Auxiliary power |
| Current relay | HJLL-â–¡â–¡/A | 5 | 6 | 20 | 0.2~6 | 0.01 | 0.9~ 0.95 | 85-260V AC and DC universal |
| HJLL-â–¡â–¡/B | 1 | 4 | 20 | 0.05~1.2 | 0.01 |
(2). Working frequency: 50Hz, 60Hz common.
(3). Action time: Apply 1.1 times of setting current on the relay, the action time is less than 35ms, apply twice the setting current, and the action time is less than 30ms.
(4). Return time: The relay drops from the input 1.1 times setting current to 0.5 times the setting current, and the return time is less than 30ms.
(5). Fixed value error: no more than 2%, the same relay is at the same setting current, the action consistency is not more than 1%.
(6). Power consumption: less than 5W: Auxiliary power supply: 85~265V, AC and DC universal.
(7). Contact capacity: can be switched on for 5A for a long time, can disconnect 250VDC, τ=5ms 50W DC has a sense load; can disconnect 250VAC, COSΦ=0.4, 250VA AC load.
(8). Insulation resistance: Between the relay case and the exposed live terminal, measured with a megohmmeter with an open circuit voltage of 500V, the insulation resistance is greater than 300MΩ.
(9). Medium strength: between the relay case and the exposed live terminal, it can withstand 2KV (effective value) 50Hz test voltage for 1 minute, no breakdown, no flashover phenomenon.
6. Conditions of Use
(1). Ambient temperature: -10 ° C ~ 50 ° C;
(2). No conductive gas, no corrosive gas, no strong vibration;
(3). Working position: arbitrary;
(4). Magnetic field strength: less than 0.5mT;
(5). There must be no rain or snow, and there are anti-fog, dust-proof and sand-proof facilities.
HJLL digital zero sequence current relay
HJLL-E9/B digital zero sequence current relay, HJLL-E8/B digital zero sequence current relay, HJLL-E7/B digital zero sequence current relay, HJLL-E6/B digital zero sequence current relay, HJLL- E5/B digital zero sequence current relay, HJLL-E4/B digital zero sequence current relay, HJLL-E3/B digital zero sequence current relay, HJLL-E9/A digital zero sequence current relay, HJLL-E8/ A digital zero sequence current relay, HJLL-E7/A digital zero sequence current relay, HJLL-E6/A digital zero sequence current relay, HJLL-E5/A digital zero sequence current relay, HJLL-E4/A digital Zero sequence current relay, HJLL-E3/A digital zero sequence current relay
Http://news.chinawj.com.cn
Thread End Mills,Thread Cutting End Mill,Full Tooth Thread Milling Cutter,Multi-Tooth Coated Thread End Mill
Supal(changzhou)Precision Tools Co.,Ltd , https://www.endmillpro.com