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The 500, 531, 531-SL, 521 and 521-SL series of high voltage connectors, kits and cable assemblies are designed to minimize the risk of electrical shock to personnel through the use of recessed contacts. Both the receptacle and plug connectors have recessed contacts positioned to stand-off the rated voltage in the unmated condition at sea level of each respective series.

In addition to the recessed contact, the connectors also feature a spring finger body contact which assures a reliable ground circuit prior to engagement of the center contact; further reducing the risk of electrical shock.

Operating Temperature Range
-40 to 85°C

Series 521
Specific Characteristics:
Voltage Rating : 25 kVDC at 70,000 ft.
Unmated Voltage Rating : 20 kVDC at sea level
Test Voltage : 41 kVDC at 70,000 ft.
Unit of Measure

Specifications

Series

N/A 521

Assembly Type

N/A Receptacle Bag Assembly

Altitude/Reduced Pressure Rating

N/A 70,000 ft.

Current Rating

N/A TBD 20 A

Operating Temperature

N/A -40 to 85 ºC

Test Voltage @ 70000 ft.

N/A 41

Current Rating

N/A 20 A

Mating Compatibility

N/A Mates all series 521 plug cable assemblies

Pressure Differential Rating

N/A Sealed for 1 ATM

Maximum Leak Rate (Helium)

N/A 1 X 10 -6 cc/sec
Panel Mounting Style1 N/A Front Mount

Panel Mounting Torque

N/A 90 to 95 in-lbs

Coupling Style

N/A Bayonet

Spring Finger Grounding (Plug)

N/A Yes

Braid Termination

N/A Crimp
Standard/Non-Standard2 N/A Standard Part

Wire Type

N/A Shielded

Sealed Receptacle

N/A Yes

Plug Contact Material/Finish

N/A BeCu/Au

Receptacle Contact Material/Finish

N/A Brass/Au

Receptacle Insulator Material

N/A Plastic

Plug Insulator Material

N/A Plastic

Wire Insulation

N/A PE

Export Classification

N/A TBD

RoHS Compliant

N/A TBD

Voltage Rating

N/A 25 kVDC

Test Voltage at Sea Level

N/A 28 kVDC

Cable Preparation

N/A

 

CLICK HERE FOR A PHOTOGRAPHIC "HOW TO"

Series 521 (Sea Level version P/N 167-3516 and 167-3561-1)
Series 521 (Reduced Pressure version P/N 167-4534 and 167-4534-1)

Step 1
Cut cable to length, clean and square. Strip outer jacket to dimension shown. Trim exposed braid to dimension. Strip inner insulation to dimension and hot tin dip core. No nicked or severed strands allowed during stripping.

Step 2
Slip cable seal over center conductor. Slide contact over inner conductor. Place in fixture to apply compression to the cable seal and maintain pressure until completion of the soldering process. Solder contact into place through hole using SN60 solder in accordance with J-STD- 006. Completed solder joint must have a continuous fillet of solder between the inner conductor and the contact. The solder in the feed hole must be flush or below flush and free of pinholes.

Step 3
Slip boot and crimp sleeve over cable. Flair braid slightly by moving inner insulation in a circular motion. Coat inner insulation and cable seal liberally with fluorsilicone grease.

Step 4
Insert prepared cable into the connector carefully. Do not pinch or otherwise damage the cable seal. Guide braid smoothly over the crimp area of the connector until the contact shoulder butts against the insulator (see “X”). Slide the crimp sleeve into position, trim excess braid, and crimp using Thomas & Betts crimp tool No. WT-540 with Die No. 5456. (NOTE: this Die Number supercedes the one called out in our printed catalogs). Measure contact depth before and after crimping. Make sure braid does not extend beyond the end of the crimp sleeve. Install interface seal with fluorosilicone grease applied on the back face of the seal. A 521 series receptacle can be used to guide and push the interface seal in place by mating the connectors.


HVID - Plug and Receptacle Assembly Instructions

Note: Assembly procedures apply to both plug and receptacle. Only receptacle
assembly is shown.

Step 1
Cut cable to length, clean and square. Strip cable to dimension shown. No nicked or severed strands allowed during stripping. Hot tin dip exposed wire and remove rosin residue. Solder contact into pace through solder hole. Remove rosin residue.

Step 2
Lightly abrade wire insulation in area shown using fine non-metallic abrasive silica paper. Clean with acetone using a lint free tissue or cloth. Air dry for five minutes.

Step 3
Apply a light coat of Dow #1204 primer to the surface of the contact in the area shown. Take care to avoid getting primer on the mating surface of the contact.

Step 4
Apply a light coat of Dow # 93076-2 adhesive to the primed surface of the contact and the abraded surface of the silicone cable. Note: The adhesive is a two-part adhesive and must be mixed according to the manufacturer’s instructions.

Step 5
Clean molded connector body cavity using cleaning procedure of Step 2. Let air dry for five minutes. Insert the cable/contact into the connector body until the contact bottoms out.
Remove any adhesive that may have gotten on the conductive surface of the contact. Apply a fillet of adhesive to the cable where it enters the molded cavity.

Step 6
Allow assembly to cure undisturbed for at least 24 hours.



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Coupling Nut Properties

Bayonet Coupling Nut Diameter

N/A 0.750 in19 mm

Bayonet Coupling Nut Material

N/A Brass

Bayonet Coupling Nut Finish

N/A Nickel

Contact Properties

Contact Diameter

N/A 0.077 in1.9 mm

Contact Material

N/A Brass

Contact Finish

N/A Gold

Contact Type

N/A Male

Dimensions

B

N/A 3.94 in100.08 mm

C

N/A 2.56 in65.02 mm

D

N/A 0.25 in6.35 mm

Hex

N/A 0.93 in23.62 mm
  • 1 Allow mounting hole clearence for 5/8-24 UNEF thread
  • 2 Non-standard parts will have longer lead times and potentially higher pricing. Please contact Teledyne Reynolds Engineering department to determine feasibility for use in your application.