Bird 25KW负载8645B 8646B系列
型号:8645B115 8645B230 8645B230-6 8646B115 8646B230 8646B230-6
8640B Series, 25 kW, Forced-Air Cooled Terminations are available in models to work with 115 or 230 volts at 50 or 60 Hz. This compact high-power 50-ohm termination efficiently dissipates up to 25 kW of RF over a wide frequency range up to 1 GHz. The RF input connector is located in the center of the side of the nearly cube-shaped unit. Forced-air heat exchanger cooled load for high-power applications up to 1 GHz Compact, low-profile design saves space in crowded transmitter sites Interlock control circuit provides fail-safe protection of the transmitter and load resistor in the event of an ac power failure to the blower or coolant pump 8640b系列,25千瓦风冷式终端可在115或230V在50或60赫兹的电压工作。这种紧凑型高功率50欧姆终端有效地消散到射频功率25在很宽的频率范围高达1 GHz。射频输入连接器位于正方形侧面中心。 强制空气热交换器冷却负荷大功率应用到1 GHz 结构紧凑,低剖面设计节省空间 联锁控制电路提供**保护的变送器和负载电阻在发生交流断电的风机或水泵·
8640B Series, Terminations(系列负载终端)
Model(型号)
Connector(连接器)
8645B
3-1/8" EIA, Flanged(法兰)
8646B
3-1/8" EIA, Unflanged(法兰)
Power(电源)
Add Suffix to Model(后缀)
115 V 60 Hz
-115
230 V 50 Hz
-230
230 V 60 Hz
-230-6
Notes:
1. * Below 5°C, ONLY use 35% E.G. and 65% Dist. H2O mixture
2. ** Above 30°C (86 °F) with water only, or 25°C (77 °F) with a 35% ethylene glycol mixture, derate power to 20 kW max.
Item No(型号)
8640B Series
Item Name(名称)
25 kW, Forced-Air Cooled Terminations(风冷)
Power Rating(功率)
25 kW continuous ** See note 2
Frequency Range and VSWR(频率)
1.1 max. 1 kHz - 900 MHz (DC for continuity checks)
Temperture Range(温度)
Water Only: +5 to +45 °C (41 to 113 °F) 35% Ethylene Glycol: -20 to +35 °C (-4 to +95 °F) ** See note 2
Coolant(冷却)
Cooling Method: Water dielectric and forced air convection Coolant: Distilled water or distilled water/ethylene glycol mixture Coolant Capacity: 9 qts. (8.5 L) nominal * See note 1
Product Type
Forced-Air Cooled(强制空气冷却)
Operating Position(操作位置)
Horizontal Only(水平)
Connectors(连接器)
See Model Matrix
Finish(工艺)
Gray Powder Coat
Dimensions(尺寸)
26" x 19-5/8" x 19-1/4" (L x W x H) 670 x 500 x 490 mm
Weight(重量)
155 lbs. (70 kg)
115 V models: 11 A nominal @ 115V ± 10% 60Hz 230 V models: 5-1/2 A nominal @ 230V ± 10% 50Hz
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