JOHNSON CONTROLS控制器P77系列P77AAA-9370技术参数介绍

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JOHNSON CONTROLS控制器P77系列技术参数

Specification	Description
Product switch action	SPDT
Pressure connection	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
Ambient conditions	Temperature: -40°C to 60ºC (-40°F to 140ºF) Humidity: 0% to 95% R.H. non-condensing
Enclosure	Type 1: cast aluminum
Dimensions	Type 1 enclosure: 88 mm x 80 mm x 53 mm
(H x W x D)	(3.48 in. x 3.15 in x 2.09 in.)
Approximate shipping weight	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)
Compliance	cULus Listed; UL 60730, File SA516
P77 for low pressure applications
Purpose of control	Pressure operating control: automatic reset controls Pressure cut-out: manual reset controls
Construction of control	Electromechanical
Number of cycles	Automatic: 30,000 cycles Manual reset: 6,000 cycles
Method of mounting control	Independently-mounted control
Type 1 or Type 2 action	Automatic: Type 1; Type 1.C; micro-interruption Manual reset: Type 2
Pollution degree	Category 3
Heat and fire resistance category	N/A
Rated impulse voltage	4,000 V
Ball pressure temperature	N/A
Field wiring rating	90°C (194°F)
Maximum overpressure	20 bar (290 psi)
Cover screw torque requirements	Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)
P77 for high pressure applications
Purpose of control	Pressure operating control: automatic reset controls Pressure cut-out: manual reset controls
Construction of control	Electromechanical
Number of cycles	Automatic: 30,000 cycles Manual reset: 6,000 cycles
Method of mounting control	Independently-mounted control
Type 1 or Type 2 action	Automatic: Type 1; Type 1.C; micro-interruption Manual reset: Type 2
Pollution degree	Category 3
Heat and fire resistance category	N/A
Rated impulse voltage	4,000 V
Ball pressure temperature	N/A
Field wiring rating	90°C (194°F)
Maximum overpressure	33 bar (479 psi)
Cover screw torque requirements	Tighten enclosure screws to: 1.1–1.4 N·m (10–12 in·lb)

JOHNSON CONTROLS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.

JOHNSON CONTROLS控制器P77系列其他常用型号：

JOHNSON CONTROLS P77AAA-9700

JOHNSON CONTROLS P77AAA-9750

JOHNSON CONTROLS P77AAA-9800

JOHNSON CONTROLS P77AAA-9850

JOHNSON CONTROLS P77AAA-9300

JOHNSON CONTROLS P77AAA-9301

JOHNSON CONTROLS P77AAA-9302

JOHNSON CONTROLS P77AAA-9350

JOHNSON CONTROLS P77AAA-9351

JOHNSON CONTROLS P77AAA-9400

JOHNSON CONTROLS P77AAA-9450