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articles:overvoltage_protection_relay [2020/11/17 08:04] – john5788articles:overvoltage_protection_relay [2020/11/17 08:49] (current) – [Testing] john5788
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 In the event of overloads occurring after the overvoltage cutout, the circuit is interrupted by the 10 A flat plug-in fuse. The 9-pin version is also fused separately at terminals 87E and 87L, whereby when the fuse for 87E blows 87L is also switched off. In the event of overloads occurring after the overvoltage cutout, the circuit is interrupted by the 10 A flat plug-in fuse. The 9-pin version is also fused separately at terminals 87E and 87L, whereby when the fuse for 87E blows 87L is also switched off.
 +
 +===== Diagrams and Pinout =====
 +
 +<grid>
 +<col sm="6">
 +<panel type="default" title="Pinout" no-body="true">
 +^ Pin ^ Function ^
 +| 30 | Battery voltage input (12 V)|
 +| 31 | Ground |
 +| 15 | Ignition switch input |
 +| 87E | Fused and diode protected output (12 V) |
 +| 87L | Fused and diode protected output (12 V) |
 +| 30a | Fused output (12 V) |
 +</panel>
 +</col>
 +<col sm="6">
 +<thumbnail>
 +<image shape="responsive">{{ articles:ovp_pinout.png?600}}</image>
 +<caption>OVP pinout</caption>
 +</thumbnail>
 +</col>
 +</grid>
 +
 +<grid>
 +<col sm="4">
 +<thumbnail>
 +<image shape="responsive">{{ articles:ovp_5-pin.png?600 }}</image>
 +<caption>5-pin OVP</caption>
 +</thumbnail>
 +</col>
 +<col sm="4">
 +<thumbnail>
 +<image shape="responsive">{{ articles:ovp_7-pin.png?600}}</image>
 +<caption>7-pin OVP</caption>
 +</thumbnail>
 +</col>
 +<col sm="4">
 +<thumbnail>
 +<image shape="responsive">{{ articles:ovp_9-pin.png?600}}</image>
 +<caption>9-pin OVP</caption>
 +</thumbnail>
 +</col>
 +</grid>
 +
 +===== Testing =====
 +
 +The following procedure is a static test for basic relay operation. Passing the following test does not guarantee that the OVP relay is functioning correctly, but will accurately tell if the OVP relay is faulty.
 +
 +  - Apply 12V to pin 30 and ground 31
 +    - Verify with a multimeter that 30a has 12V and 87E/87L has no voltage
 +  - Apply 12V to pin 15
 +    - The internal relay should click
 +    - Verify with a multimeter that 87E and 87L have 12V as well as 30a.
 +
 +
 +===== Part numbers =====
 +
 +
 +<grid>
 +<col sm="6">
 +<panel type="default" title="Part Numbers for OVP Relay" no-body="true">
 +^ Part Number ^ Description ^
 +| 201 540 32 45 | 7-pin relay, black top, single 10A fuse |
 +| 201 540 38 45 | 7-pin relay, black top, single 10A fuse |
 +| 201 540 37 45 | 9-pin relay, red top, double 10A fuse |
 +</panel>
 +</col>
 +</grid>
  • articles/overvoltage_protection_relay.1605600257.txt.gz
  • Last modified: 2020/11/17 08:04
  • by john5788