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MLGQ Datasheet(PDF) 1 Page - Tyco Electronics

Part # MLGQ
Description  GP/ML/TR series 10 Amp Control Relay
Download  4 Pages
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Manufacturer  MACOM [Tyco Electronics]
Direct Link  http://www.macom.com
Logo MACOM - Tyco Electronics

MLGQ Datasheet(HTML) 1 Page - Tyco Electronics

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917
AGASTAT
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
This diagram illustrates
amplification obtained
by the articulated
operating mechanism.
SERIES GP
SERIES TR
GP/ML/TR series
10 Amp Control Relay
Non-latching, Latching & Timing Versions
File E15631
File LR29186
Users should thoroughly review the technical data before selecting a product
part number. It is recommended that users also seek out the pertinent
approvals files of the agencies/laboratories and review them to ensure the
product meets the requirements for a given application.
GP/ML/TR Design Features
Among the advances AGASTAT control relays offer over existing designs is
a unique contact operating mechanism. An articulated arm assembly
amplifies the movement of the solenoid core, allowing the use of a short
stroke coil to produce an extremely wide contact gap. The long support
arms used in conventional relays are eliminated. Both current capacity and
shock/vibration tolerance are greatly increased, as well as life expectancy.
Design/Construction
AGASTAT control relays are operated by a moving core electromagnet
whose main gap is at the center of the coil. A shoe is fitted to the core
which overlaps the yoke and further increases the magnetic attraction.
The coil itself is in the form of an elongated cylinder, which provides a
low mean turn length and also assists heat dissipation. Since the
maximum travel of the electromagnet does not provide optimum contacts
movement, an ingenious amplifying device has been designed.
This consists of a W-shaped mechanism, shown in figure 1. When the
center of the W is moved vertically the lower extremities move closer to
each other as can be seen in the illustration. The center of the W mecha-
nism is connected to the moving core of the electromagnet and the two
lower points are connected to the moving contacts.
Two of these mechanisms are placed side-by-side to actuate the four
contacts sets of the relay. The outer arms of the W mechanisms are leaf
springs, manufactured from a flat piece of non-ferrous metal. These outer
arms act as return springs for their corresponding contacts. This provides
each contact with its own separate return spring, making the contacts
independent.
The mechanical amplification of the motion of the electromagnet
permits a greater distance between the contacts, while the high efficiency
of the electromagnet provides a nominal contact force in excess of 100
grams on the normally open contacts.
All the contacts are positioned well away from the cover and are well
ventilated and separated from each other by insulating walls.
The absence of metal-to-metal friction, the symmetrical design of the
contact arrangement and the lack of heavy impacts provides a mechanical
life of 100,000,000 operations.
For use in AC circuits, the relay is supplied with a built-in rectification
circuit, thus retaining the high DC efficiency of the electromagnet. The
current peak on energizing is also eliminated and consequently the relay
can operate with a resistance in series (e.g. for high voltages or for drop-
out by shorting the coil). The use of the rectification circuit offers still
other advantages. The same model can operated at frequencies ranging
from 40 to 400 cycles. Operation of the relay is crisp; even with a low AC
voltage, there is a complete absence of hum and vibration.
The plastic dust cover has two windows through which the iron yoke
protrudes to facilitate cooling and also to allow direct mounting
arrangement of the relay irrespective of the terminals.
Figure 1 – Illustration of Amplification
Features
• Occupies very small panel space
• May be mounted singly, in continuous rows or in groups.
• Available with screw terminal molded socket.
• 4 SPDT contacts.
• Magnetic blowout device option increases DC current carrying ability
approximately ten times for both N.O. and N.C. contacts. In both AC and
DC operation, the addition of the device will normally double the contact
life, due to reduced arcing.
GP/ML Contact Data @ 25°C
Arrangements: 4 Form C (4PDT)
Material: Siver plated.
Ratings: See chart.
Expected Life: Mechanical: 100 million operations.
Electrical: See chart and graph.
Contact Ratings and Expected Life
Power Factor
Number of
Current
or
Electrical
Voltage
(Amps)
Time Constant
Operations
Remarks
540 VAC
3
COS Ø = 0.5
15,000
2 contacts in series
380 VAC
15
Resistive
10,000
2 contacts in parallel
380 VAC
10
Resistive
200,000
380 VAC
3 x 3.3
COS Ø = 0.8
200,000
3hp motor
220 VAC
20
Resistive
20,000
2 contacts in parallel
220 VAC
15
COS Ø = 0.5
20,000
2 contacts in parallel
220 VAC
10
Resistive
400,000
220 VAC
3 x 6
COS Ø = 0.8
200,000
3hp motor
220 VAC
5
1,500,000
Filament lamps
220 VAC
5
Resistive
3,000,000
220 VAC
2.5
COS Ø = 0.25
2,000,000
220 VAC
2
Resistive
15,000,000
220 VAC
1.25
Resistive
30,000,000
120 VDC
1.5
Resistive
20,000,000
with blow-out device
48 VDC
10
Resistive
1,000,000
Load Life Curve
NOTE: Seismic & radiation tested EGP, EML and ETR models
are available. Consult factory for detailed information.


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