电缆、阻抗值、短路电流、电压降计算表

1、变压器型号、参数、电压降、启动电压降综合计算表序 变压器型号额定容量kVA一 额 定 电 压 kV二次额定V二次额定A使用地点或范围最大电机额定容量kw负荷容量之和kw功率因数ttgQ变压器 计算容量kVASj = cosQ联结 组别空载损耗W负载损耗W空载%短路阻抗%启动时功率因数额定启动A实践启动AKKI = Ia变压器正常电压损失VuxsinQkxUzUrUxIqe1B1KBSGZY-630/1.26301200388运输线2505000.700.70.711.02500.00Yy0 Yy1118003680040.3973.9800.70.7167046429.722B2KBSGZY-

2、1600/1.216001200693工作面2506320.640.70.711.02575.43Yy033508000040.7123.9360.70.71670464283B3KBSGZY-4000/3.4540003450669.4工作面40031800.480.70.711.022160.00Dyn610014000040.6973.9880.70.7137325862.15最大电机启动时变压器电压损失V UqB = U R % +Ux %(Iq sin0q + tg0) Iq c o s 0q + K +Ux %(Iq sin0q + tg0) 69.6745.27142.44电缆型

3、号、实际电流、载流量、电压降、启动电压降综合计算表序号电缆截面积mm3电缆长度m最大电机功率kw负荷容量之和kw电网额定电压V功率因数电缆载流量A电缆最大长时工作 电流公式 (单位A)I = Kx Pe 103 Ag 3Ue cos0干线电缆 电压降公式 (单位V)U = Kx PeLg 103U DSe g支线电缆 电压降公式 (单位V) U = Kf PeLZ 103UDSn启动时功率因数cos Qq额定启动A实践启动AAKI = I干线电缆启动时 电压损失公式 (单位V)支线电缆启动时 电压损失公式 (单位V) Uqz = Iq cos0qsLPmaxkxUe电缆实际工作电流Dn干线电缆

4、电压降支线电缆电压降Iqe额定14MCPTJ-3120202505000.7011400.7293253.242.50.951.200.76704623.4025MYP-37045900.8011400.760.342.50.950.640.72.1636MCPTJ-31202507220.6111400.7293317.542.50.952.260.76704625.5647MCPTJ-31202040015800.5533000.7293217.942.50.950.520.73702561.1358MCPTJ-31202040016000.5533000.7293219.942.50.9

5、50.520.73702561.131.2169MYP33545450.8011400.730.242.50.953.350.731121426.197MYP33545450.8011400.730.242.50.953.350.731121426.198MCPTJ-370202502500.8011400.7167.542.50.951.240.76704623.779MCPTJ-370202502500.8011400.7167.542.50.951.240.76704623.77MYP316200.8011400.710.142.50.950.330.740280.99MYP316200

6、.8011400.710.142.50.950.330.740280.99MYP33545450.8011400.730.242.50.950.220.73112141.75MYP33545450.8011400.730.242.50.950.220.73112141.75MCPTJ-3502502500.8011400.7167.542.50.952.610.76704627.91MCPTJ-3500.8011400.788.442.50.951.380.75313666.27MCPTJ-3502502500.8011400.7167.542.50.952.610.76704627.9120

7、MCPTJ-3500.8011400.788.442.50.951.380.75313666.2721MCPTJ-3502502500.8011400.7167.542.50.952.610.76704627.9122MCPTJ-3702004004000.8033000.720592.642.50.956.860.737025620.832023MCPTJ-3702002002000.8033000.720546.342.50.953.430.710.412124MCPTJ-3502302502500.8033000.757.942.50.956.900.723120.962225MCPTJ

8、-3704604009300.6633000.7153.042.50.9528.680.737025676.582326MCPTJ-3704602002000.8033000.720546.342.50.957.890.723.952427MCPTJ-3704604004000.8033000.720592.642.50.9515.780.737025647.902528MCPTJ-3702502002000.8033000.720546.342.50.954.290.713.022629MCPTJ-3702504004000.8033000.720592.642.50.958.580.737

9、025626.0327MCPTJ-3704502002000.8033000.720546.342.50.957.720.723.4328MCPTJ-3704504004000.8033000.720592.642.50.9515.440.737025646.8629MCPTJ-3702402002000.8033000.720546.342.50.954.120.712.50MCPTJ-3702402002000.8033000.720546.342.50.954.120.712.50线路电压降计算表序号各线路编号各线路组成 (变压器编号、电缆编号)额定V变压器二次额定V正常运行时线路电压损

10、失V正常运行时线路允许电压损失V是否满足下列条件yy启动时线路电压损失V启动电动机时实际最小启动V满足电动机最小启动转矩的最小电压V启动时启动器最低吸持电压V启动电动机所需要的最小启动电压V三个条件U三个条件同时满足Uq min0.7UeUUeU2Be2Be qU 2Be qq m in eq m in eKK0.7Ue 1B1、4、151140120031.14是74.821125.18789.82798723.18是是2B2、6、191140120018.97是58.551141.45789.82798739.45是B3、7、273300345078.45315是191.473258.53

11、2286.3123102118.53是短路点短路电流计算表序号短路点 编号短路点前端变压器感抗相对值短路点前端各电缆编号前端长度(m)前端电缆相对70mm2电缆相对电阻的等效长度(m)等效截面积mm2基准 容量 MVA基准Kv单位短路点前端 各电缆电阻 相对值之和R* = L,Sj jSDU 2j短路点前端变压器及电缆电抗相对值之和X * = X o LS j j1000 U 2j短路点前端线路阻抗值短路点最小两相短路电流I2 ) = LLSSjUjDX0Z1d1d6.349242020.242.50.060.2726.4336.43864722d2d6.34924、114054.28571.

12、242.50.060.7396.5166.55863543d3d6.34924、124054.28571.242.50.060.7396.5166.55863544d4d6.34924、1340.242.50.062.3156.5166.91560265d5d6.34924、1440.242.50.062.3156.5166.91560266d6d2.55.242.50.060.7002.6252.717153377d7d2.55、10、15.242.50.068.1703.2928.80847308d8d2.55、9、16.242.50.068.1703.2928.80847309d9d2.

13、56.242.50.060.4082.6252.65715684dd2.56、1760.242.50.061.3892.7503.08113524dd2.56、1860.242.50.061.3892.7503.08113524dd2.56、1960.242.50.061.3892.7503.08113524dd2.56、2060.242.50.061.3892.7503.08113524dd2.56、2160.242.50.061.3892.7503.08113524dd1720203.4542.50.060.0331.0101.01114340dd17、22220362.85713.454

14、2.50.060.5981.1111.26211488dd17、23220362.85713.4542.50.060.5981.1111.26211488dd17、242505723.4542.50.060.9421.1261.4689871dd17、25480808.57143.4542.50.061.3321.2421.821795820d20d1820203.4542.50.060.0331.0101.0111434021d21d18、26480808.57143.4542.50.061.3321.2421.821795822d22d18、27480808.57143.4542.50.0

15、61.3321.2421.821795823d23d18、28270448.57143.4542.50.060.7391.1361.3551069324d24d18、29270448.57143.4542.50.060.7391.1361.3551069325d25d18、30470791.42863.4542.50.061.3041.2371.797806426d26d18、31470791.42863.4542.50.061.3041.2371.797806427d27d18、32260431.42863.4542.50.060.7111.1311.3361084928d28d18、332

16、60431.42863.4542.50.060.7111.1311.33610849AA开关整定值计算表序 开关名称开关型号开关额定V开关额定A额定功率KW电机额定 最大额定功率KW最大额定A最大启动A其它电机额定功率之和KW其它电机额定电流之和馈电继电保护 整定计数值zj qeI I + Izj qe整定值取值A最小两相短路A灵敏度K = 1 .5合格或不合格启动器控制 整定值IzIz Ie最小两相短路A灵敏度K 1.2合格或不合格PeIe或IePmaxxIzjIzI2)KIzI2)K1GK1高防开关KBGZ41-100/10Y0025080.723250723.14.52合格2GK2高防开

17、关KBG-210/10Y0021025080.7234723364.83合格3GK3高防开关KBG-400/10Y00400400129.16278022435364026264.10合格4K1馈电开关BXB-630/1140Y63025067025083885060267.09合格5K2馈电开关BXB-1200/1140Y25067047231698647304.73合格6K3馈电开关BXB-800/3300Y33008004007389.82278067779587.23合格75馈电开关KBZ-40040045180.945211220473021.50合格81组合开关QJZ9215-11

18、40-6K400250148.0063545.4合格92400250148.0063545.4合格34007.55.0356026150.7合格44007.55.0356026150.7合格6电磁启动器QBZ-120N4530.15473019.7合格7电磁启动器QBZ-120N4530.15473019.7合格8组合开关QJZ9215-1140-6K400250148.0024合格940080.0002421.1合格400250148.0024合格40080.00024.8合格400250148.0024合格组合开关QJZ9215-3300-6K330040020058.008824.8合格

19、40040087.0078816.5合格40025054.00987122.8合格400930153.0079586.2合格组合开关QJZ9215-3300-9K330040020058.00795817.2合格40040087.0077958合格40020058.009323.0合格40040087.00793合格40020058.008064合格40040087.00780641.6合格40020058.004923.4合格40040087.007495.6合格短路保护分级表一级保护二级保护三级保护线路末端两相短路电流值灵敏度灵敏度是否合格 元件 脱扣熔体JDB件脱扣器熔体JDB 元件 脱扣熔体JDBGK1234.52是GK23364.83是GK364026264.10是K185060267.09是K247304.73是K379587.23是5220473021.50是163545.37是263545.37是356026150.65是456026150.65是6473071是7473071是82442是902421.13是2442是02478是2442是8824.76是78851是987122.85是79586.22是7958