This assembly is comprised of a high energy 20mm MOV with lead dress
making it suitable for easy installation and high reliability service.
The leads are covered with Teflon Tubing to both protect the leads from accidental
damage and to prevent inadvertent shorting of the circuit to which it is applied.
The leads are terminated with ring terminals that are both crimped and soldered
to the leads for high reliability operation. The ring terminals will accommodate standard
AAR style terminal posts and posts up to 1/4" diameter.
Peak Current Handling Capacity = 2,000A (8x20μS Waveform)
Energy Handling Capacity = 160 Joules
Typical Capacitance = 12,000pF
Maximum Clampin Voltage = 63 Volts Peak @ 20A device current
Operating Temperature = -40 to +70°C
General Description:
This assembly is comprised of a high energy 20mm MOV with lead dress making it suitable for easy installation and high reliability
service.
The leads are covered with Teflon Tubing to protect both the leads from accidental damage and to prevent
inadvertent shorting of the circuit to which it is applied.
The leads are terminated with ring terminals that are both crimped
and soldered to the leads for high reliability operation. The ring terminals will accomodate standard AAR style terminal posts and posts
up to 1/4" in diameter.
Summary:
This is an MOV assembly that has fully insulated lead wires terminated with ring terminals for easy mounting to AAR posts from 1 inch centers
to more than 3 inch centers for installation flexibility. The MOV is a high energy device and is suitable for the protection of low voltage line
circuits carrying nominal 12 or 24 VDC power or low voltage AC lines with a maximum voltage of 29VDC or 10.5VRMS.
This is a primary / secondary stage protector and is generally mounted on the Main Terminal Board of the Signal House or Case. These devices will
take the brunt of the energy imparted on the protected line pair. This way, a lower voltage and lower energy transient is now delivered to the down-stream
secondary / tertiary protection, allowing those devices to operate most effectively. This is part of the Site-Specific Solutions
philosophy on Staged Protection. When implemented correctly, the protection devices and the equipment will survive. This device
is an excellent choice for the protection of correspondence lines, low voltage lines (AC or DC) going between
Signal Houses or Cases, and the Signal House side of Track Coupling Units.
Note: These are not to be used as direct track arresters or as Line-to-Ground protection.
