Connecting OPTPSU power to DGA monitor - OPT100

OPT100 Installation Guide
Document code
M211857EN
Revision
V
Language
English
Product
OPT100
Document type
User guide
  • Instrument power cable (Vaisala item CBL210544)
  • Screwdriver with 3-mm-wide (0.12‑in) slotted head
  • Adjustable wrench
CAUTION If the Vaisala-supplied instrument power cable is not available, use a shielded cable with 6 mm2 (10 AWG) wires. Maximum length of the cable is 1.2 m (3 ft 11 in).
  1. Open the cable gland marked DC in on the DGA monitor. Remove the plug and store it for later use.
  2. Insert the instrument power cable through the outer nut and the seal insert, and start inserting the cable through the cable gland. Stop when you reach the section of the cable where the metal braid is exposed.
  3. Bend the cable braid over the seal insert so that it will make contact with metal when the cable gland is tightened.
  4. Push the outer nut and the seal insert against the contact socket of the gland and tighten the outer nut. See Figure 1 for recommended tightening torques.
  5. Inside the DGA monitor, connect the wires to terminal block Y3:
    Table 1. Terminal block Y3 wiring
    Signal

    Wire color

    Vaisala cable CBL210544

    		 Terminal
    24 V DC + Black with red marking +
    24 V DC − Black −
    Ground Green/yellow
    Figure 1. Terminal block Y3 wiring
  6. Open the cable gland marked DC out on the power supply unit. Remove the plug and store it for later use.
  7. Insert the instrument power cable through the outer nut and the seal insert, and start inserting the cable through the cable gland. Stop when you reach the section of the cable where the metal braid is exposed.
  8. Bend the cable braid over the seal insert so that it will make contact with metal when the cable gland is tightened.
  9. Push the outer nut and the seal insert against the contact socket of the gland and tighten the outer nut. See Figure 1 for recommended tightening torques.
  10. Inside the power supply unit, connect the wires to terminal block X5:
    Table 2. Terminal block X5 wiring
    Signal

    Wire color

    Vaisala cable CBL210544

    		 Terminal
    24 V DC + Black with red marking +
    24 V DC − Black −
    Ground Green/yellow
    Figure 2. Terminal block X5 wiring