Ampcontrol Pty Ltd
– ABN 28 000 915 542
HPB USER MANUAL
HPBB012 Version 9
– March/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 13 of 61
A
P
P
R
OV
E
D
FOR
E
X
T
E
R
N
A
L
D
IS
TR
IB
U
T
ION
–
P
R
OP
E
R
T
Y
OF
A
M
P
C
ON
TR
OL
P
T
Y
LTD
–
N
O
T
T
O
B
E
R
E
P
R
OD
U
C
E
D
I
N
P
A
R
T
Modifications must not be made to any part of the HPB. As supplied, the unit is built to, and
complies with the relevant standards. Modifications to its construction will render the unit non-
compliant.
Complete and accurate records of the installation must be kept as part of the site installation.
4.3 Installation and Wiring Instructions
4.3.1 Integrated Protection Relay
The HPB Relay has a powder coated sheet steel enclosure to be mounted into existing
enclosures of adequate IP rating.
The Relay is designed to operate when mounted either laid down flat or in a vertical position.
CAUTION!
Vent holes are provided at both the top and bottom of the relay to assist
in the cooling of the electronics inside the relay. These vents should not
be blocked or restricted in any way.
When installing the HPB Relay care should be taken to ensure sufficient space is allowed around the
relay for the ease of change out during routine maintenance.
Connections to the HPB Relay are made via a plug in base. The base is to be securely fastened to the
enclosure in which it is being installed. The base is clearly labelled for ease of terminal location and
identification.
4.3.2 Remote Display Module (HDM)
The Remote Display Module is housed in an IP55 polycarbonate enclosure. The Module has been
designed to be flush mounted, external to the switchgear it is controlling.
4.3.3 Cable Connection Module
CCMB
– 6.6kV (6.6kV systems)
The CCMB-6.6kV (Cable Connection Module type B
– 6.6kV) is a resistive isolation device, which
interfaces between the power circuit and the HPB Relay allowing the HPB to measure both the line
voltage and the insulation resistance to Earth. A 5kVDC voltage is generated within the CCMB, which
under normal operation, applies up to 2.5kVDC between each phase and earth. The CCMB-6.6kV is
housed in a polycarbonate enclosure.
CCMB-22kV (Cable Connection Module type B
– 22kV) is an isolated device that allows the HPB Relay
to interface with the power circuit to measure both the line voltage and the insulation resistance to
Earth. The CCMB-22kV connects to the 11kV or 22kV power circuit via 3 x voltage transformers
connected in a phase to earth through the CCMB-22kV. The line voltage is measured on the secondary
side of the voltage transformers and an insulation test is performed by lifting the primary star point from
earth and applying 5kVDC to the star point which passes through the primary windings and is applied
to all three phases in parallel.
CAUTION!
The CCMB and the HPB Relay must be earthed to the same earth
connection as the trailing cable on systems with separate earth grids.
Ensure that the earth connection are reliably installed, as this is the
basis of protection, for the isolation device.
