PENN是JOHNSON CONTROLS旗下品牌。
JOHNSON CONTROLS成立于1885年，通过全方位的系统和数字解决方案，让客户的建筑更智能。JOHNSON CONTROLS旨在改变人们生活，工作，学习和娱乐环境，从优化建筑性能到提高安全性和舒适度。
PENN控制器P77系列技术参数
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Specification
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Description
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Product switch action
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SPDT
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Pressure connection
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7/16-20 UNF for 6 mm (1/4 in. SAE external flare fitting), or 914 mm (36 in.) capillary with 6 mm (1/4 in.) flare fitting
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Ambient conditions
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Temperature: -40°C to 60ºC (-40°F to 140ºF)
Humidity: 0% to 95% R.H. non-condensing
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Enclosure
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Type 1: cast aluminum
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Dimensions
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Type 1 enclosure: 88 mm x 80 mm x 53 mm
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(H x W x D)
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(3.48 in. x 3.15 in x 2.09 in.)
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Approximate shipping weight
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Individual pack: (Type 1 enclosure): 0.5 kg (1.1 lbs)
Bulk pack: (Type 1 enclosure in multiples of 35 controls): 19 kg (41.88 lbs)
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Compliance
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cULus Listed; UL 60730, File SA516
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P77 for low pressure applications
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Purpose of control
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Pressure operating control: automatic reset controls
Pressure cut-out: manual reset controls
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Construction of control
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Electromechanical
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Number of cycles
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Automatic: 30,000 cycles
Manual reset: 6,000 cycles
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Method of mounting control
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Independently-mounted control
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Type 1 or Type 2 action
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Automatic: Type 1; Type 1.C; micro-interruption
Manual reset: Type 2
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Pollution degree
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Category 3
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Heat and fire resistance category
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N/A
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Rated impulse voltage
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4,000 V
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Ball pressure temperature
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N/A
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Field wiring rating
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90°C (194°F)
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Maximum overpressure
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20 bar (290 psi)
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Cover screw torque requirements
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Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)
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P77 for high pressure applications
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Purpose of control
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Pressure operating control: automatic reset controls
Pressure cut-out: manual reset controls
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Construction of control
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Electromechanical
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Number of cycles
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Automatic: 30,000 cycles
Manual reset: 6,000 cycles
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Method of mounting control
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Independently-mounted control
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Type 1 or Type 2 action
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Automatic: Type 1; Type 1.C; micro-interruption
Manual reset: Type 2
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Pollution degree
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Category 3
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Heat and fire resistance category
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N/A
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Rated impulse voltage
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4,000 V
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Ball pressure temperature
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N/A
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Field wiring rating
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90°C (194°F)
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Maximum overpressure
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33 bar (479 psi)
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Cover screw torque requirements
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Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)
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PENN控制器P77系列介绍
P77 系列压力控制器主要设计用于商业制冷和空调应用的高低压切断控制、抽空控制、冷凝器风扇循环和容量控制。
这些控件可用于多个压力范围，并与大多数常用制冷剂兼容。 它们也可用于其他非腐蚀性流体应用。 控件还提供多种不同的电气额定值和单刀双掷 (SPDT) 开关配置。
适用于高压或低压应用的 P77 系列控制器专为商业制冷和空调应用的单一压力控制而设计。
P77 Series Pressure Controls are designed primarily for high and low pressure cut-out control, pump-down control, condenser fan cycling, and capacity control on commercial refrigeration and air-conditioning applications.
These controls are available in several pressure ranges and are compatible with most common refrigerants. They may also be used on other non-corrosive fluid applications. Controls also are available in several different electrical ratings and single-pole, double-throw (SPDT) switch configurations.
The P77 Series Controls for high or low pressure applications are designed for single pressure control of commercial refrigeration and air-conditioning applications.
PENN控制器P77系列其他常用型号：
PENN P77AAA-9700
PENN P77AAA-9750
PENN P77AAA-9800
PENN P77AAA-9850
PENN P77AAA-9300
PENN P77AAA-9301
PENN P77AAA-9302
PENN P77AAA-9350
PENN P77AAA-9351
PENN P77AAA-9400
PENN P77AAA-9450
PENN P77AAA-9451
PENN P77AAA-9370